{"id":28233,"date":"2025-05-11T09:53:33","date_gmt":"2025-05-11T02:53:33","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=28233"},"modified":"2025-05-11T09:53:33","modified_gmt":"2025-05-11T02:53:33","slug":"disk-i-o-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/","title":{"rendered":"Disk I\/O l\u00e0 g\u00ec? Gi\u1ea3i th\u00edch A-Z Input\/Output \u1ed5 c\u1ee9ng (2025)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Disk-IO-la-gi\" >Disk I\/O l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Tai-sao-Disk-IO-quan-trong-voi-hieu-suat-he-thong\" >T\u1ea1i sao Disk I\/O quan tr\u1ecdng v\u1edbi hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Anh-huong-truc-tiep-cua-Disk-IO-den-toc-do-tai-trang-web-va-ung-dung\" >\u1ea2nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp c\u1ee7a Disk I\/O \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u1ea3i trang web v\u00e0 \u1ee9ng d\u1ee5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Vai-tro-cua-Disk-IO-trong-lua-chon-va-van-hanh-VPSServer-Hosting\" >Vai tr\u00f2 c\u1ee7a Disk I\/O trong l\u1ef1a ch\u1ecdn v\u00e0 v\u1eadn h\u00e0nh VPS\/Server Hosting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Moi-lien-he-giua-Disk-IO-va-chi-so-IO-Wait\" >M\u1ed1i li\u00ean h\u1ec7 gi\u1eefa Disk I\/O v\u00e0 ch\u1ec9 s\u1ed1 I\/O Wait<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Cac-yeu-to-then-chot-tac-dong-den-hieu-suat-Disk-IO\" >C\u00e1c y\u1ebfu t\u1ed1 then ch\u1ed1t t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u su\u1ea5t Disk I\/O<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Loai-o-cung-Cuoc-chien-hieu-nang-giua-HDD-SSD-SATA-va-SSD-NVMe\" >Lo\u1ea1i \u1ed5 c\u1ee9ng: Cu\u1ed9c chi\u1ebfn hi\u1ec7u n\u0103ng gi\u1eefa HDD, SSD SATA v\u00e0 SSD NVMe<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Giao-thuc-ket-noi-SATA-SAS-va-NVMe-anh-huong-ra-sao\" >Giao th\u1ee9c k\u1ebft n\u1ed1i: SATA, SAS v\u00e0 NVMe \u1ea3nh h\u01b0\u1edfng ra sao?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Cong-nghe-RAID-Tang-toc-hay-bao-ve-du-lieu\" >C\u00f4ng ngh\u1ec7 RAID: T\u0103ng t\u1ed1c hay b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Bo-nho-dem-Cache-%E2%80%9CLieu-thuoc%E2%80%9D-tang-toc-cho-Disk-IO\" >B\u1ed9 nh\u1edb \u0111\u1ec7m (Cache): &#8220;Li\u1ec1u thu\u1ed1c&#8221; t\u0103ng t\u1ed1c cho Disk I\/O<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#He-dieu-hanh-OS-va-He-thong-tep-File-System\" >H\u1ec7 \u0111i\u1ec1u h\u00e0nh (OS) v\u00e0 H\u1ec7 th\u1ed1ng t\u1ec7p (File System)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Cac-chi-so-vang-do-luong-hieu-suat-Disk-IO\" >C\u00e1c ch\u1ec9 s\u1ed1 v\u00e0ng \u0111o l\u01b0\u1eddng hi\u1ec7u su\u1ea5t Disk I\/O<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#IOPS-InputOutput-Operations-Per-Second-So-thao-tac-moi-giay\" >IOPS (Input\/Output Operations Per Second): S\u1ed1 thao t\u00e1c m\u1ed7i gi\u00e2y<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Throughput-Thong-luongBang-thong-doc-ghi-Toc-do-truyen-tai-du-lieu-MBs-GBs\" >Throughput (Th\u00f4ng l\u01b0\u1ee3ng\/B\u0103ng th\u00f4ng \u0111\u1ecdc ghi): T\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u (MB\/s, GB\/s)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Latency-Do-tre-Thoi-gian-phan-hoi-yeu-cau-ms\" >Latency (\u0110\u1ed9 tr\u1ec5): Th\u1eddi gian ph\u1ea3n h\u1ed3i y\u00eau c\u1ea7u (ms)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Moi-tuong-quan-giua-IOPS-Throughput-va-Latency\" >M\u1ed1i t\u01b0\u01a1ng quan gi\u1eefa IOPS, Throughput v\u00e0 Latency<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Huong-dan-kiem-tra-va-theo-doi-monitor-Disk-IO-tren-cac-nen-tang-pho-bien\" >H\u01b0\u1edbng d\u1eabn ki\u1ec3m tra v\u00e0 theo d\u00f5i (monitor) Disk I\/O tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng ph\u1ed5 bi\u1ebfn<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Cong-cu-kiem-tra-Disk-IO-tren-Windows-Task-Manager-Resource-Monitor-CrystalDiskMark\" >C\u00f4ng c\u1ee5 ki\u1ec3m tra Disk I\/O tr\u00ean Windows (Task Manager, Resource Monitor, CrystalDiskMark)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Lenh-kiem-tra-Disk-IO-tren-Linux-iotop-iostat-vmstat-dd-fio\" >L\u1ec7nh ki\u1ec3m tra Disk I\/O tr\u00ean Linux (iotop, iostat, vmstat, dd, fio)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Nhan-dien-Bottleneck-Disk-IO-Cac-dau-hieu-canh-bao\" >Nh\u1eadn di\u1ec7n Bottleneck Disk I\/O: C\u00e1c d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#He-thong-hoat-dong-i-ach-ung-dung-thuong-xuyen-%E2%80%9Cdung-hinh%E2%80%9D-Not-Responding\" >H\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u00ec \u1ea1ch, \u1ee9ng d\u1ee5ng th\u01b0\u1eddng xuy\u00ean &#8220;\u0111\u1ee9ng h\u00ecnh&#8221; (Not Responding)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Chi-so-Disk-Usage-Muc-su-dung-dia-luon-o-muc-cao-90-100\" >Ch\u1ec9 s\u1ed1 Disk Usage (M\u1ee9c s\u1eed d\u1ee5ng \u0111\u0129a) lu\u00f4n \u1edf m\u1ee9c cao (90-100%)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Thoi-gian-cho-IO-IO-Wait-time-tang-dot-bien-dac-biet-tren-Linux\" >Th\u1eddi gian ch\u1edd I\/O (I\/O Wait time) t\u0103ng \u0111\u1ed9t bi\u1ebfn (\u0111\u1eb7c bi\u1ec7t tr\u00ean Linux)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Den-bao-hoat-dong-cua-o-cung-nhap-nhay-lien-tuc-khong-ngung\" >\u0110\u00e8n b\u00e1o ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed5 c\u1ee9ng nh\u1ea5p nh\u00e1y li\u00ean t\u1ee5c kh\u00f4ng ng\u1eebng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Bi-quyet-toi-uu-va-cai-thien-hieu-suat-Disk-IO-co-ban\" >B\u00ed quy\u1ebft t\u1ed1i \u01b0u v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t Disk I\/O c\u01a1 b\u1ea3n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Nang-cap-phan-cung-Giai-phap-%E2%80%9Cvang%E2%80%9D-cho-Disk-IO\" >N\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng: Gi\u1ea3i ph\u00e1p &#8220;v\u00e0ng&#8221; cho Disk I\/O<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Toi-uu-hoa-truy-van-co-so-du-lieu-va-cau-hinh-ung-dung\" >T\u1ed1i \u01b0u h\u00f3a truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u1ea5u h\u00ecnh \u1ee9ng d\u1ee5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Tan-dung-hieu-qua-cac-co-che-Caching\" >T\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 c\u00e1c c\u01a1 ch\u1ebf Caching<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Chong-phan-manh-o-dia-Luu-y-Chi-danh-cho-HDD\" >Ch\u1ed1ng ph\u00e2n m\u1ea3nh \u1ed5 \u0111\u0129a (L\u01b0u \u00fd: Ch\u1ec9 d\u00e0nh cho HDD)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Giai-dap-cac-cau-hoi-thuong-gap-ve-Disk-IO-FAQ\" >Gi\u1ea3i \u0111\u00e1p c\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Disk I\/O (FAQ)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Disk-IO-bao-nhieu-la-tot-cho-nhu-cau-cua-toi-website-VPS-gaming-luu-tru\" >Disk I\/O bao nhi\u00eau l\u00e0 t\u1ed1t cho nhu c\u1ea7u c\u1ee7a t\u00f4i (website, VPS gaming, l\u01b0u tr\u1eef)?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Loi-%E2%80%9CDisk-IO-Error%E2%80%9D-xuat-hien-co-nghia-la-gi-va-cach-xu-ly-ban-dau\" >L\u1ed7i &#8220;Disk I\/O Error&#8221; xu\u1ea5t hi\u1ec7n c\u00f3 ngh\u0129a l\u00e0 g\u00ec v\u00e0 c\u00e1ch x\u1eed l\u00fd ban \u0111\u1ea7u?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Tai-sao-chi-so-Disk-IO-cua-toi-thuong-xuyen-o-muc-100\" >T\u1ea1i sao ch\u1ec9 s\u1ed1 Disk I\/O c\u1ee7a t\u00f4i th\u01b0\u1eddng xuy\u00ean \u1edf m\u1ee9c 100%?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Co-phai-RAM-nhieu-hon-se-truc-tiep-cai-thien-Disk-IO-khong\" >C\u00f3 ph\u1ea3i RAM nhi\u1ec1u h\u01a1n s\u1ebd tr\u1ef1c ti\u1ebfp c\u1ea3i thi\u1ec7n Disk I\/O kh\u00f4ng?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/#Nam-vung-Disk-IO-Chia-khoa-cho-he-thong-nhanh-va-on-dinh\" >N\u1eafm v\u1eefng Disk I\/O: Ch\u00eca kh\u00f3a cho h\u1ec7 th\u1ed1ng nhanh v\u00e0 \u1ed5n \u0111\u1ecbnh<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y t\u00ednh hay m\u00e1y ch\u1ee7 ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1, trong \u0111\u00f3 Disk I\/O \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t. Hi\u1ec3u r\u00f5 Disk I\/O l\u00e0 g\u00ec s\u1ebd gi\u00fap b\u1ea1n t\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng, l\u1ef1a ch\u1ecdn ph\u1ea7n c\u1ee9ng ph\u00f9 h\u1ee3p v\u00e0 \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng m\u01b0\u1ee3t m\u00e0. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u1ea3i th\u00edch to\u00e0n di\u1ec7n v\u1ec1 Input\/Output \u1ed5 c\u1ee9ng, t\u1eeb \u0111\u1ecbnh ngh\u0129a \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng v\u00e0 c\u00e1ch c\u1ea3i thi\u1ec7n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Disk-IO-la-gi\"><\/span>Disk I\/O l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/interdata.vn\/blog\/disk-i-o-la-gi\/\">Disk I\/O<\/a> l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Disk Input\/Output, bao g\u1ed3m to\u00e0n b\u1ed9 c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ecdc (Read) d\u1eef li\u1ec7u t\u1eeb \u1ed5 \u0111\u0129a v\u00e0 ghi (Write) d\u1eef li\u1ec7u v\u00e0o \u1ed5 \u0111\u0129a l\u01b0u tr\u1eef c\u1ee7a m\u00e1y t\u00ednh ho\u1eb7c m\u00e1y ch\u1ee7. \u0110\u00e2y l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 then ch\u1ed1t quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t truy xu\u1ea5t d\u1eef li\u1ec7u, \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o.jpg\" alt=\"Disk I\/O\" width=\"750\" height=\"500\" class=\"aligncenter size-full wp-image-28240\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-300x200.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>Trong c\u1ee5m t\u1eeb n\u00e0y, &#8220;Disk&#8221; (\u0110\u0129a) \u00e1m ch\u1ec9 c\u00e1c thi\u1ebft b\u1ecb l\u01b0u tr\u1eef d\u1eef li\u1ec7u kh\u00f4ng thay \u0111\u1ed5i khi m\u1ea5t \u0111i\u1ec7n. Ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 \u1ed5 \u0111\u0129a c\u1ee9ng truy\u1ec1n th\u1ed1ng (HDD \u2013 Hard Disk Drive) v\u00e0 c\u00e1c lo\u1ea1i \u1ed5 c\u1ee9ng th\u1ec3 r\u1eafn hi\u1ec7n \u0111\u1ea1i (SSD \u2013 Solid State Drive). Nh\u1eefng thi\u1ebft b\u1ecb n\u00e0y gi\u1eef vai tr\u00f2 kho ch\u1ee9a th\u00f4ng tin d\u00e0i h\u1ea1n cho m\u1ecdi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y t\u00ednh.<\/p>\n<p>&#8220;I\/O&#8221; l\u00e0 c\u00e1ch vi\u1ebft ng\u1eafn g\u1ecdn c\u1ee7a Input\/Output, c\u00f3 ngh\u0129a l\u00e0 Nh\u1eadp\/Xu\u1ea5t. &#8220;Input&#8221; (Nh\u1eadp) l\u00e0 qu\u00e1 tr\u00ecnh d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u01b0a t\u1eeb b\u1ed9 nh\u1edb t\u1ea1m th\u1eddi nh\u01b0 RAM (Random Access Memory) ho\u1eb7c c\u00e1c ngu\u1ed3n kh\u00e1c v\u00e0o \u1ed5 \u0111\u0129a \u0111\u1ec3 l\u01b0u tr\u1eef. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c c\u1ea5t gi\u1eef an to\u00e0n ngay c\u1ea3 khi kh\u00f4ng c\u00f3 ngu\u1ed3n \u0111i\u1ec7n.<\/p>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, &#8220;Output&#8221; (Xu\u1ea5t) l\u00e0 qu\u00e1 tr\u00ecnh d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u1ea5y ra t\u1eeb \u1ed5 \u0111\u0129a v\u00e0 \u0111\u01b0a l\u00ean b\u1ed9 nh\u1edb RAM \u0111\u1ec3 CPU (Central Processing Unit &#8211; B\u1ed9 x\u1eed l\u00fd trung \u01b0\u01a1ng) x\u1eed l\u00fd. Khi b\u1ea1n m\u1edf m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh, ch\u00ednh l\u00e0 l\u00fac ho\u1ea1t \u0111\u1ed9ng Output di\u1ec5n ra, \u0111\u01b0a d\u1eef li\u1ec7u ch\u01b0\u01a1ng tr\u00ecnh t\u1eeb \u1ed5 \u0111\u0129a v\u00e0o RAM.<\/p>\n<p>Ho\u1ea1t \u0111\u1ed9ng &#8220;Read&#8221; (\u0110\u1ecdc) trong Disk I\/O ch\u00ednh l\u00e0 qu\u00e1 tr\u00ecnh &#8220;Output&#8221;. Khi b\u1ea1n m\u1edf m\u1ed9t t\u1eadp tin v\u0103n b\u1ea3n, kh\u1edfi ch\u1ea1y m\u1ed9t ph\u1ea7n m\u1ec1m \u0111\u1ed3 h\u1ecda, hay truy c\u1eadp m\u1ed9t website \u0111ang l\u01b0u tr\u1eef tr\u00ean <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/thue-hosting\/\">Hosting gi\u00e1 r\u1ebb<\/a>, h\u1ec7 th\u1ed1ng s\u1ebd th\u1ef1c hi\u1ec7n thao t\u00e1c \u0111\u1ecdc d\u1eef li\u1ec7u t\u1eeb \u1ed5 \u0111\u0129a. D\u1eef li\u1ec7u n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn RAM.<\/p>\n<p>Ho\u1ea1t \u0111\u1ed9ng &#8220;Write&#8221; (Ghi) trong Disk I\/O t\u01b0\u01a1ng \u1ee9ng v\u1edbi qu\u00e1 tr\u00ecnh &#8220;Input&#8221;. Khi b\u1ea1n l\u01b0u m\u1ed9t t\u00e0i li\u1ec7u \u0111ang l\u00e0m vi\u1ec7c, t\u1ea3i m\u1ed9t t\u1ec7p tin t\u1eeb internet v\u1ec1 m\u00e1y, ho\u1eb7c khi h\u1ec7 th\u1ed1ng ghi l\u1ea1i c\u00e1c file log ho\u1ea1t \u0111\u1ed9ng, \u0111\u00f3 ch\u00ednh l\u00e0 l\u00fac thao t\u00e1c ghi d\u1eef li\u1ec7u l\u00ean \u1ed5 \u0111\u0129a \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>\n<p>\u0110\u1ec3 d\u1ec5 h\u00ecnh dung, h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng \u1ed5 \u0111\u0129a c\u1ee7a b\u1ea1n nh\u01b0 m\u1ed9t th\u01b0 vi\u1ec7n kh\u1ed5ng l\u1ed3. Disk I\/O gi\u1ed1ng nh\u01b0 vi\u1ec7c th\u1ee7 th\u01b0 t\u00ecm v\u00e0 l\u1ea5y s\u00e1ch (Read &#8211; Output) cho b\u1ea1n \u0111\u1ecdc theo y\u00eau c\u1ea7u. Ho\u1eb7c khi b\u1ea1n c\u00f3 s\u00e1ch m\u1edbi mu\u1ed1n c\u1ea5t gi\u1eef, th\u1ee7 th\u01b0 s\u1ebd nh\u1eadn v\u00e0 s\u1eafp x\u1ebfp (Write &#8211; Input) s\u00e1ch \u0111\u00f3 l\u00ean k\u1ec7.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tai-sao-Disk-IO-quan-trong-voi-hieu-suat-he-thong\"><\/span>T\u1ea1i sao Disk I\/O quan tr\u1ecdng v\u1edbi hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Disk I\/O kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt kh\u00f4 khan; \u0111\u00e2y l\u00e0 y\u1ebfu t\u1ed1 n\u1ec1n t\u1ea3ng quy\u1ebft \u0111\u1ecbnh tr\u1ea3i nghi\u1ec7m s\u1eed d\u1ee5ng v\u00e0 hi\u1ec7u qu\u1ea3 c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n. M\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 Disk I\/O y\u1ebfu k\u00e9m s\u1ebd d\u1eabn \u0111\u1ebfn nhi\u1ec1u phi\u1ec1n to\u00e1i, t\u1eeb vi\u1ec7c kh\u1edfi \u0111\u1ed9ng m\u00e1y ch\u1eadm ch\u1ea1p \u0111\u1ebfn c\u00e1c \u1ee9ng d\u1ee5ng th\u01b0\u1eddng xuy\u00ean b\u1ecb treo, \u0111\u1ee9ng h\u00ecnh.<\/p>\n<p>Hi\u1ec7u su\u1ea5t Disk I\/O \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng \u0111\u00e1p \u1ee9ng c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. D\u00f9 CPU c\u1ee7a b\u1ea1n c\u00f3 m\u1ea1nh m\u1ebd \u0111\u1ebfn \u0111\u00e2u hay RAM c\u00f3 dung l\u01b0\u1ee3ng l\u1edbn th\u1ebf n\u00e0o, n\u1ebfu \u1ed5 \u0111\u0129a kh\u00f4ng th\u1ec3 cung c\u1ea5p ho\u1eb7c ghi nh\u1eadn d\u1eef li\u1ec7u \u0111\u1ee7 nhanh, h\u1ec7 th\u1ed1ng v\u1eabn s\u1ebd b\u1ecb &#8220;ngh\u1ebdn c\u1ed5 chai&#8221; t\u1ea1i \u0111\u00e2y.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-01.jpg\" alt=\"Disk I\/O 01\" width=\"750\" height=\"500\" class=\"aligncenter size-full wp-image-28234\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-01.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-01-300x200.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anh-huong-truc-tiep-cua-Disk-IO-den-toc-do-tai-trang-web-va-ung-dung\"><\/span>\u1ea2nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp c\u1ee7a Disk I\/O \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u1ea3i trang web v\u00e0 \u1ee9ng d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>T\u1ed1c \u0111\u1ed9 t\u1ea3i trang web l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng v\u00e0 th\u1ee9 h\u1ea1ng SEO. Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp m\u1ed9t website, m\u00e1y ch\u1ee7 web ph\u1ea3i \u0111\u1ecdc nhi\u1ec1u t\u1ec7p tin (HTML, CSS, JavaScript, h\u00ecnh \u1ea3nh) t\u1eeb \u1ed5 \u0111\u0129a \u0111\u1ec3 g\u1eedi \u0111\u1ebfn tr\u00ecnh duy\u1ec7t. Disk I\/O ch\u1eadm s\u1ebd khi\u1ebfn qu\u00e1 tr\u00ecnh n\u00e0y k\u00e9o d\u00e0i.<\/p>\n<p>T\u01b0\u01a1ng t\u1ef1, c\u00e1c \u1ee9ng d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng \u1ee9ng d\u1ee5ng n\u1eb7ng v\u1ec1 d\u1eef li\u1ec7u nh\u01b0 ph\u1ea7n m\u1ec1m ch\u1ec9nh s\u1eeda video, game, hay c\u00e1c h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u, \u0111\u1ec1u ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi c\u1ee7a \u1ed5 \u0111\u0129a. Disk I\/O t\u1ed1t gi\u00fap \u1ee9ng d\u1ee5ng kh\u1edfi \u0111\u1ed9ng nhanh h\u01a1n, x\u1eed l\u00fd t\u00e1c v\u1ee5 m\u01b0\u1ee3t m\u00e0 h\u01a1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Vai-tro-cua-Disk-IO-trong-lua-chon-va-van-hanh-VPSServer-Hosting\"><\/span>Vai tr\u00f2 c\u1ee7a Disk I\/O trong l\u1ef1a ch\u1ecdn v\u00e0 v\u1eadn h\u00e0nh VPS\/Server Hosting<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi b\u1ea1n quy\u1ebft \u0111\u1ecbnh <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/thue-vps\/\">thu\u00ea VPS gi\u00e1 r\u1ebb<\/a> ho\u1eb7c m\u1ed9t <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/cloud-server\/\">Cloud Server gi\u00e1 r\u1ebb<\/a> chuy\u00ean d\u1ee5ng, th\u00f4ng s\u1ed1 Disk I\/O l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 h\u00e0ng \u0111\u1ea7u c\u1ea7n xem x\u00e9t. \u0110\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c website c\u00f3 l\u01b0\u1ee3ng truy c\u1eadp cao, c\u00e1c \u1ee9ng d\u1ee5ng web ph\u1ee9c t\u1ea1p, hay c\u00e1c m\u00e1y ch\u1ee7 c\u01a1 s\u1edf d\u1eef li\u1ec7u, Disk I\/O cao \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng ph\u1ee5c v\u1ee5 \u1ed5n \u0111\u1ecbnh.<\/p>\n<p>M\u1ed9t m\u00e1y ch\u1ee7 v\u1edbi Disk I\/O th\u1ea5p c\u00f3 th\u1ec3 kh\u00f4ng x\u1eed l\u00fd k\u1ecbp c\u00e1c y\u00eau c\u1ea7u \u0111\u1ecdc\/ghi \u0111\u1ed3ng th\u1eddi t\u1eeb nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng, d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng website t\u1ea3i ch\u1eadm ho\u1eb7c th\u1eadm ch\u00ed kh\u00f4ng th\u1ec3 truy c\u1eadp. C\u00e1c d\u1ecbch v\u1ee5 chuy\u00ean bi\u1ec7t nh\u01b0 <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/vps-amd\/\">VPS AMD<\/a> th\u01b0\u1eddng cung c\u1ea5p hi\u1ec7u n\u0103ng I\/O t\u1ed1t nh\u1edd v\u00e0o ki\u1ebfn tr\u00fac CPU m\u1ea1nh m\u1ebd h\u1ed7 tr\u1ee3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Moi-lien-he-giua-Disk-IO-va-chi-so-IO-Wait\"><\/span>M\u1ed1i li\u00ean h\u1ec7 gi\u1eefa Disk I\/O v\u00e0 ch\u1ec9 s\u1ed1 I\/O Wait<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>I\/O Wait l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 quan tr\u1ecdng trong c\u00e1c h\u1ec7 th\u1ed1ng Linux, th\u1ec3 hi\u1ec7n ph\u1ea7n tr\u0103m th\u1eddi gian CPU ph\u1ea3i ch\u1edd \u0111\u1ee3i c\u00e1c thao t\u00e1c Disk I\/O ho\u00e0n t\u1ea5t tr\u01b0\u1edbc khi c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c x\u1eed l\u00fd c\u00e1c t\u00e1c v\u1ee5 kh\u00e1c. Ch\u1ec9 s\u1ed1 I\/O Wait cao l\u00e0 m\u1ed9t d\u1ea5u hi\u1ec7u r\u00f5 r\u00e0ng cho th\u1ea5y h\u1ec7 th\u1ed1ng \u0111ang b\u1ecb ngh\u1ebdn \u1edf \u1ed5 \u0111\u0129a.<\/p>\n<p>Khi I\/O Wait t\u0103ng cao, CPU kh\u00f4ng th\u1ec3 ho\u1ea1t \u0111\u1ed9ng h\u1ebft c\u00f4ng su\u1ea5t, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t chung c\u1ee7a h\u1ec7 th\u1ed1ng b\u1ecb suy gi\u1ea3m nghi\u00eam tr\u1ecdng. \u0110i\u1ec1u n\u00e0y l\u00e0m cho m\u1ecdi thao t\u00e1c, t\u1eeb vi\u1ec7c m\u1edf m\u1ed9t t\u1ec7p nh\u1ecf \u0111\u1ebfn ch\u1ea1y c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ee9c t\u1ea1p, \u0111\u1ec1u tr\u1edf n\u00ean ch\u1eadm ch\u1ea1p v\u00e0 k\u00e9m hi\u1ec7u qu\u1ea3.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-yeu-to-then-chot-tac-dong-den-hieu-suat-Disk-IO\"><\/span>C\u00e1c y\u1ebfu t\u1ed1 then ch\u1ed1t t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u su\u1ea5t Disk I\/O<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec7u su\u1ea5t Disk I\/O kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t con s\u1ed1 c\u1ed1 \u0111\u1ecbnh m\u00e0 ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c nhau, t\u1eeb lo\u1ea1i \u1ed5 c\u1ee9ng b\u1ea1n s\u1eed d\u1ee5ng \u0111\u1ebfn c\u00e1ch h\u1ec7 \u0111i\u1ec1u h\u00e0nh qu\u1ea3n l\u00fd c\u00e1c y\u00eau c\u1ea7u. Hi\u1ec3u r\u00f5 c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y gi\u00fap b\u1ea1n \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u00fang \u0111\u1eafn khi x\u00e2y d\u1ef1ng ho\u1eb7c n\u00e2ng c\u1ea5p h\u1ec7 th\u1ed1ng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-02.jpg\" alt=\"Disk I\/O 02\" width=\"750\" height=\"500\" class=\"aligncenter size-full wp-image-28235\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-02.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-02-300x200.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Loai-o-cung-Cuoc-chien-hieu-nang-giua-HDD-SSD-SATA-va-SSD-NVMe\"><\/span>Lo\u1ea1i \u1ed5 c\u1ee9ng: Cu\u1ed9c chi\u1ebfn hi\u1ec7u n\u0103ng gi\u1eefa HDD, SSD SATA v\u00e0 SSD NVMe<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Lo\u1ea1i \u1ed5 c\u1ee9ng l\u00e0 y\u1ebfu t\u1ed1 c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn nh\u1ea5t \u0111\u1ebfn hi\u1ec7u su\u1ea5t Disk I\/O. Hi\u1ec7n nay, c\u00f3 ba lo\u1ea1i \u1ed5 c\u1ee9ng ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn l\u00e0 HDD, SSD SATA v\u00e0 SSD NVMe. M\u1ed7i lo\u1ea1i c\u00f3 c\u1ea5u t\u1ea1o v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng kh\u00e1c nhau, d\u1eabn \u0111\u1ebfn s\u1ef1 ch\u00eanh l\u1ec7ch \u0111\u00e1ng k\u1ec3 v\u1ec1 t\u1ed1c \u0111\u1ed9.<\/p>\n<p>\u1ed4 c\u1ee9ng HDD (Hard Disk Drive) l\u00e0 lo\u1ea1i truy\u1ec1n th\u1ed1ng, s\u1eed d\u1ee5ng \u0111\u0129a t\u1eeb quay v\u00e0 \u0111\u1ea7u \u0111\u1ecdc\/ghi c\u01a1 h\u1ecdc \u0111\u1ec3 truy xu\u1ea5t d\u1eef li\u1ec7u. Do c\u00f3 c\u00e1c b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng, HDD c\u00f3 t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi v\u00e0 s\u1ed1 thao t\u00e1c I\/O m\u1ed7i gi\u00e2y (IOPS) h\u1ea1n ch\u1ebf, \u0111\u1ed3ng th\u1eddi \u0111\u1ed9 tr\u1ec5 c\u0169ng cao h\u01a1n so v\u1edbi SSD.<\/p>\n<p>\u1ed4 c\u1ee9ng SSD (Solid State Drive) s\u1eed d\u1ee5ng chip nh\u1edb flash \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u, kh\u00f4ng c\u00f3 b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng. SSD SATA, s\u1eed d\u1ee5ng giao ti\u1ebfp SATA, mang l\u1ea1i c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 v\u1ec1 t\u1ed1c \u0111\u1ed9 so v\u1edbi HDD, gi\u00fap m\u00e1y t\u00ednh kh\u1edfi \u0111\u1ed9ng nhanh h\u01a1n, \u1ee9ng d\u1ee5ng ch\u1ea1y m\u01b0\u1ee3t h\u01a1n.<\/p>\n<p>SSD NVMe (Non-Volatile Memory Express) l\u00e0 b\u01b0\u1edbc ti\u1ebfn v\u01b0\u1ee3t b\u1eadc. S\u1eed d\u1ee5ng giao ti\u1ebfp PCIe tr\u1ef1c ti\u1ebfp v\u1edbi CPU, SSD NVMe cho t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi v\u00e0 IOPS cao h\u01a1n nhi\u1ec1u l\u1ea7n so v\u1edbi SSD SATA. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho c\u00e1c h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u hi\u1ec7u su\u1ea5t cao. Nhi\u1ec1u nh\u00e0 cung c\u1ea5p <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/hosting-amd\/\">Hosting AMD<\/a> \u0111\u00e3 trang b\u1ecb lo\u1ea1i \u1ed5 c\u1ee9ng n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Giao-thuc-ket-noi-SATA-SAS-va-NVMe-anh-huong-ra-sao\"><\/span>Giao th\u1ee9c k\u1ebft n\u1ed1i: SATA, SAS v\u00e0 NVMe \u1ea3nh h\u01b0\u1edfng ra sao?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Giao th\u1ee9c k\u1ebft n\u1ed1i l\u00e0 c\u00e1ch \u1ed5 \u0111\u0129a giao ti\u1ebfp v\u1edbi bo m\u1ea1ch ch\u1ee7 c\u1ee7a m\u00e1y t\u00ednh. SATA (Serial ATA) l\u00e0 giao th\u1ee9c ph\u1ed5 bi\u1ebfn cho m\u00e1y t\u00ednh c\u00e1 nh\u00e2n v\u00e0 m\u1ed9t s\u1ed1 m\u00e1y ch\u1ee7 c\u1ea5p th\u1ea5p, cung c\u1ea5p b\u0103ng th\u00f4ng v\u1eeba \u0111\u1ee7 cho HDD v\u00e0 SSD SATA.<\/p>\n<p>SAS (Serial Attached SCSI) th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u00e1y ch\u1ee7 v\u00e0 l\u01b0u tr\u1eef doanh nghi\u1ec7p, cung c\u1ea5p \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u su\u1ea5t cao h\u01a1n SATA, h\u1ed7 tr\u1ee3 c\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao. Tuy nhi\u00ean, chi ph\u00ed c\u1ee7a \u1ed5 SAS c\u0169ng cao h\u01a1n.<\/p>\n<p>NVMe, nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp, l\u00e0 giao th\u1ee9c \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho SSD, t\u1eadn d\u1ee5ng b\u0103ng th\u00f4ng r\u1ed9ng c\u1ee7a khe c\u1eafm PCIe. Giao th\u1ee9c n\u00e0y lo\u1ea1i b\u1ecf c\u00e1c &#8221; \u0443\u0437\u043a\u043e\u0435 \u043c\u0435\u0441\u0442\u043e &#8221; c\u1ee7a SATA v\u00e0 SAS, cho ph\u00e9p SSD ph\u00e1t huy t\u1ed1i \u0111a ti\u1ec1m n\u0103ng t\u1ed1c \u0111\u1ed9.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cong-nghe-RAID-Tang-toc-hay-bao-ve-du-lieu\"><\/span>C\u00f4ng ngh\u1ec7 RAID: T\u0103ng t\u1ed1c hay b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>RAID (Redundant Array of Independent Disks) l\u00e0 c\u00f4ng ngh\u1ec7 k\u1ebft h\u1ee3p nhi\u1ec1u \u1ed5 \u0111\u0129a v\u1eadt l\u00fd th\u00e0nh m\u1ed9t ho\u1eb7c nhi\u1ec1u \u0111\u01a1n v\u1ecb logic. T\u00f9y thu\u1ed9c v\u00e0o c\u1ea5u h\u00ecnh RAID, b\u1ea1n c\u00f3 th\u1ec3 t\u0103ng hi\u1ec7u su\u1ea5t Disk I\/O, t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i, ho\u1eb7c c\u1ea3 hai.<\/p>\n<p>V\u00ed d\u1ee5, RAID 0 (striping) ghi d\u1eef li\u1ec7u song song l\u00ean nhi\u1ec1u \u1ed5 \u0111\u0129a, gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi nh\u01b0ng kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i. RAID 1 (mirroring) sao ch\u00e9p d\u1eef li\u1ec7u gi\u1ed1ng h\u1ec7t nhau l\u00ean hai \u1ed5 \u0111\u0129a, \u0111\u1ea3m b\u1ea3o an to\u00e0n d\u1eef li\u1ec7u nh\u01b0ng kh\u00f4ng t\u0103ng t\u1ed1c \u0111\u1ed9. RAID 5 v\u00e0 RAID 10 l\u00e0 c\u00e1c c\u1ea5u h\u00ecnh ph\u1ee9c t\u1ea1p h\u01a1n, c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bo-nho-dem-Cache-%E2%80%9CLieu-thuoc%E2%80%9D-tang-toc-cho-Disk-IO\"><\/span>B\u1ed9 nh\u1edb \u0111\u1ec7m (Cache): &#8220;Li\u1ec1u thu\u1ed1c&#8221; t\u0103ng t\u1ed1c cho Disk I\/O<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ed9 nh\u1edb \u0111\u1ec7m (Cache) l\u00e0 m\u1ed9t v\u00f9ng l\u01b0u tr\u1eef t\u1ea1m th\u1eddi t\u1ed1c \u0111\u1ed9 cao, d\u00f9ng \u0111\u1ec3 gi\u1eef l\u1ea1i nh\u1eefng d\u1eef li\u1ec7u th\u01b0\u1eddng xuy\u00ean \u0111\u01b0\u1ee3c truy c\u1eadp ho\u1eb7c d\u1ef1 ki\u1ebfn s\u1ebd \u0111\u01b0\u1ee3c truy c\u1eadp s\u1edbm. Vi\u1ec7c s\u1eed d\u1ee5ng cache gi\u00fap gi\u1ea3m s\u1ed1 l\u1ea7n ph\u1ea3i \u0111\u1ecdc\/ghi tr\u1ef1c ti\u1ebfp t\u1eeb \u1ed5 \u0111\u0129a ch\u00ednh, v\u1ed1n ch\u1eadm h\u01a1n nhi\u1ec1u.<\/p>\n<p>C\u00f3 nhi\u1ec1u lo\u1ea1i cache, bao g\u1ed3m cache tr\u00ean ch\u00ednh \u1ed5 \u0111\u0129a (disk controller cache), cache do h\u1ec7 \u0111i\u1ec1u h\u00e0nh qu\u1ea3n l\u00fd trong RAM (OS cache\/page cache), v\u00e0 cache c\u1ee7a \u1ee9ng d\u1ee5ng. C\u1ea5u h\u00ecnh cache h\u1ee3p l\u00fd c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"He-dieu-hanh-OS-va-He-thong-tep-File-System\"><\/span>H\u1ec7 \u0111i\u1ec1u h\u00e0nh (OS) v\u00e0 H\u1ec7 th\u1ed1ng t\u1ec7p (File System)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>H\u1ec7 \u0111i\u1ec1u h\u00e0nh \u0111\u00f3ng vai tr\u00f2 qu\u1ea3n l\u00fd t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u I\/O. C\u00e1ch OS s\u1eafp x\u1ebfp th\u1ee9 t\u1ef1 \u01b0u ti\u00ean v\u00e0 th\u1ef1c thi c\u00e1c y\u00eau c\u1ea7u n\u00e0y (I\/O scheduling) c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t. C\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh kh\u00e1c nhau nh\u01b0 Windows, Linux, macOS c\u00f3 c\u00e1c thu\u1eadt to\u00e1n l\u1eadp l\u1ecbch I\/O ri\u00eang.<\/p>\n<p>H\u1ec7 th\u1ed1ng t\u1ec7p (File System) nh\u01b0 NTFS (tr\u00ean Windows), ext4 hay XFS (tr\u00ean Linux) l\u00e0 c\u1ea5u tr\u00fac logic m\u00e0 OS s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ed5 ch\u1ee9c v\u00e0 qu\u1ea3n l\u00fd c\u00e1c t\u1ec7p tr\u00ean \u1ed5 \u0111\u0129a. C\u00e1ch thi\u1ebft k\u1ebf v\u00e0 c\u00e1c t\u00ednh n\u0103ng c\u1ee7a file system (v\u00ed d\u1ee5: journaling, block size) c\u0169ng c\u00f3 th\u1ec3 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 Disk I\/O.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-chi-so-vang-do-luong-hieu-suat-Disk-IO\"><\/span>C\u00e1c ch\u1ec9 s\u1ed1 v\u00e0ng \u0111o l\u01b0\u1eddng hi\u1ec7u su\u1ea5t Disk I\/O<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 \u0111\u00e1nh gi\u00e1 v\u00e0 so s\u00e1nh hi\u1ec7u su\u1ea5t Disk I\/O c\u1ee7a c\u00e1c \u1ed5 \u0111\u0129a hay h\u1ec7 th\u1ed1ng kh\u00e1c nhau, ch\u00fang ta c\u1ea7n d\u1ef1a v\u00e0o c\u00e1c ch\u1ec9 s\u1ed1 \u0111o l\u01b0\u1eddng c\u1ee5 th\u1ec3. Ba ch\u1ec9 s\u1ed1 quan tr\u1ecdng nh\u1ea5t l\u00e0 IOPS, Throughput v\u00e0 Latency. Hi\u1ec3u r\u00f5 \u00fd ngh\u0129a c\u1ee7a t\u1eebng ch\u1ec9 s\u1ed1 s\u1ebd gi\u00fap b\u1ea1n \u0111\u01b0a ra l\u1ef1a ch\u1ecdn s\u00e1ng su\u1ed1t.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-03.jpg\" alt=\"Disk I\/O 03\" width=\"750\" height=\"500\" class=\"aligncenter size-full wp-image-28236\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-03.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-03-300x200.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"IOPS-InputOutput-Operations-Per-Second-So-thao-tac-moi-giay\"><\/span>IOPS (Input\/Output Operations Per Second): S\u1ed1 thao t\u00e1c m\u1ed7i gi\u00e2y<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>IOPS l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Input\/Output Operations Per Second, \u0111o l\u01b0\u1eddng s\u1ed1 l\u01b0\u1ee3ng thao t\u00e1c \u0111\u1ecdc (Read IOPS) ho\u1eb7c ghi (Write IOPS) m\u00e0 m\u1ed9t \u1ed5 \u0111\u0129a c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n trong m\u1ed9t gi\u00e2y. Ch\u1ec9 s\u1ed1 n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c t\u00e1c v\u1ee5 li\u00ean quan \u0111\u1ebfn nhi\u1ec1u t\u1ec7p nh\u1ecf v\u00e0 truy c\u1eadp ng\u1eabu nhi\u00ean.<\/p>\n<p>V\u00ed d\u1ee5, m\u1ed9t m\u00e1y ch\u1ee7 c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u01b0\u1eddng xuy\u00ean th\u1ef1c hi\u1ec7n nhi\u1ec1u truy v\u1ea5n nh\u1ecf, \u0111\u1ecdc v\u00e0 ghi c\u00e1c b\u1ea3n ghi ri\u00eang l\u1ebb. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, IOPS cao s\u1ebd \u0111\u1ea3m b\u1ea3o m\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 x\u1eed l\u00fd \u0111\u1ed3ng th\u1eddi nhi\u1ec1u y\u00eau c\u1ea7u m\u1ed9t c\u00e1ch nhanh ch\u00f3ng, mang l\u1ea1i hi\u1ec7u su\u1ea5t t\u1ed1t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Throughput-Thong-luongBang-thong-doc-ghi-Toc-do-truyen-tai-du-lieu-MBs-GBs\"><\/span>Throughput (Th\u00f4ng l\u01b0\u1ee3ng\/B\u0103ng th\u00f4ng \u0111\u1ecdc ghi): T\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u (MB\/s, GB\/s)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Throughput, c\u00f2n g\u1ecdi l\u00e0 th\u00f4ng l\u01b0\u1ee3ng ho\u1eb7c b\u0103ng th\u00f4ng \u0111\u1ecdc\/ghi, \u0111o l\u01b0\u1eddng l\u01b0\u1ee3ng d\u1eef li\u1ec7u m\u00e0 \u1ed5 \u0111\u0129a c\u00f3 th\u1ec3 truy\u1ec1n t\u1ea3i trong m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian, th\u01b0\u1eddng t\u00ednh b\u1eb1ng Megabytes m\u1ed7i gi\u00e2y (MB\/s) ho\u1eb7c Gigabytes m\u1ed7i gi\u00e2y (GB\/s). Ch\u1ec9 s\u1ed1 n\u00e0y quan tr\u1ecdng cho c\u00e1c t\u00e1c v\u1ee5 x\u1eed l\u00fd t\u1ec7p l\u1edbn.<\/p>\n<p>V\u00ed d\u1ee5, khi b\u1ea1n sao ch\u00e9p m\u1ed9t b\u1ed9 phim dung l\u01b0\u1ee3ng l\u1edbn, ch\u1ec9nh s\u1eeda video \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao, ho\u1eb7c streaming n\u1ed9i dung \u0111a ph\u01b0\u01a1ng ti\u1ec7n, throughput cao s\u1ebd gi\u00fap c\u00e1c thao t\u00e1c n\u00e0y di\u1ec5n ra nhanh h\u01a1n. \u1ed4 \u0111\u0129a c\u00f3 throughput l\u1edbn c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecdc ho\u1eb7c ghi c\u00e1c kh\u1ed1i d\u1eef li\u1ec7u l\u1edbn m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Latency-Do-tre-Thoi-gian-phan-hoi-yeu-cau-ms\"><\/span>Latency (\u0110\u1ed9 tr\u1ec5): Th\u1eddi gian ph\u1ea3n h\u1ed3i y\u00eau c\u1ea7u (ms)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Latency (\u0110\u1ed9 tr\u1ec5) l\u00e0 kho\u1ea3ng th\u1eddi gian t\u1eeb khi h\u1ec7 th\u1ed1ng g\u1eedi m\u1ed9t y\u00eau c\u1ea7u I\/O \u0111\u1ebfn khi \u1ed5 \u0111\u0129a b\u1eaft \u0111\u1ea7u ph\u1ea3n h\u1ed3i y\u00eau c\u1ea7u \u0111\u00f3, th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng mili gi\u00e2y (ms) ho\u1eb7c th\u1eadm ch\u00ed micro gi\u00e2y (\u00b5s). \u0110\u1ed9 tr\u1ec5 c\u00e0ng th\u1ea5p, \u1ed5 \u0111\u0129a ph\u1ea3n h\u1ed3i c\u00e0ng nhanh, v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng c\u00e0ng m\u01b0\u1ee3t m\u00e0.<\/p>\n<p>\u0110\u1ed9 tr\u1ec5 th\u1ea5p \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng t\u01b0\u01a1ng t\u00e1c, n\u01a1i ng\u01b0\u1eddi d\u00f9ng mong \u0111\u1ee3i ph\u1ea3n h\u1ed3i g\u1ea7n nh\u01b0 t\u1ee9c th\u00ec. Ngay c\u1ea3 khi IOPS v\u00e0 throughput cao, n\u1ebfu latency l\u1edbn, h\u1ec7 th\u1ed1ng v\u1eabn c\u00f3 th\u1ec3 c\u1ea3m th\u1ea5y ch\u1eadm ch\u1ea1p do m\u1ed7i thao t\u00e1c \u0111\u1ec1u c\u00f3 m\u1ed9t kho\u1ea3ng ch\u1edd \u0111\u1ee3i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Moi-tuong-quan-giua-IOPS-Throughput-va-Latency\"><\/span>M\u1ed1i t\u01b0\u01a1ng quan gi\u1eefa IOPS, Throughput v\u00e0 Latency<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ba ch\u1ec9 s\u1ed1 IOPS, Throughput v\u00e0 Latency kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp m\u00e0 c\u00f3 m\u1ed1i quan h\u1ec7 m\u1eadt thi\u1ebft v\u1edbi nhau. T\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i t\u00e1c v\u1ee5 (\u0111\u1ecdc\/ghi ng\u1eabu nhi\u00ean hay tu\u1ea7n t\u1ef1, k\u00edch th\u01b0\u1edbc t\u1ec7p nh\u1ecf hay l\u1edbn), m\u1ed9t ho\u1eb7c hai ch\u1ec9 s\u1ed1 c\u00f3 th\u1ec3 tr\u1edf n\u00ean quan tr\u1ecdng h\u01a1n.<\/p>\n<p>V\u00ed d\u1ee5, \u0111\u1ec3 c\u00f3 throughput cao, th\u01b0\u1eddng c\u1ea7n IOPS \u0111\u1ee7 l\u1edbn v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a m\u1ed7i thao t\u00e1c I\/O (block size) c\u0169ng ph\u1ea3i \u0111\u00e1ng k\u1ec3. Ng\u01b0\u1ee3c l\u1ea1i, latency th\u1ea5p th\u01b0\u1eddng l\u00e0 \u0111i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c IOPS cao, \u0111\u1eb7c bi\u1ec7t v\u1edbi c\u00e1c t\u00e1c v\u1ee5 y\u00eau c\u1ea7u ph\u1ea3n h\u1ed3i nhanh.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Huong-dan-kiem-tra-va-theo-doi-monitor-Disk-IO-tren-cac-nen-tang-pho-bien\"><\/span>H\u01b0\u1edbng d\u1eabn ki\u1ec3m tra v\u00e0 theo d\u00f5i (monitor) Disk I\/O tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c ki\u1ec3m tra v\u00e0 theo d\u00f5i th\u01b0\u1eddng xuy\u00ean hi\u1ec7u su\u1ea5t Disk I\/O gi\u00fap b\u1ea1n n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng, s\u1edbm ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 ti\u1ec1m \u1ea9n v\u00e0 c\u00f3 bi\u1ec7n ph\u00e1p t\u1ed1i \u01b0u k\u1ecbp th\u1eddi. M\u1ed7i h\u1ec7 \u0111i\u1ec1u h\u00e0nh \u0111\u1ec1u cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 ri\u00eang cho m\u1ee5c \u0111\u00edch n\u00e0y.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-04.jpg\" alt=\"Disk I\/O 04\" width=\"750\" height=\"500\" class=\"aligncenter size-full wp-image-28237\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-04.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-04-300x200.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cong-cu-kiem-tra-Disk-IO-tren-Windows-Task-Manager-Resource-Monitor-CrystalDiskMark\"><\/span>C\u00f4ng c\u1ee5 ki\u1ec3m tra Disk I\/O tr\u00ean Windows (Task Manager, Resource Monitor, CrystalDiskMark)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Tr\u00ean Windows, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Task Manager (Tr\u00ecnh qu\u1ea3n l\u00fd T\u00e1c v\u1ee5) \u0111\u1ec3 xem nhanh m\u1ee9c s\u1eed d\u1ee5ng \u0111\u0129a (% Disk Usage) v\u00e0 t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi hi\u1ec7n t\u1ea1i. \u0110\u1ec3 c\u00f3 th\u00f4ng tin chi ti\u1ebft h\u01a1n, Resource Monitor (Gi\u00e1m s\u00e1t T\u00e0i nguy\u00ean) cung c\u1ea5p bi\u1ec3u \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u0129a, c\u00e1c quy tr\u00ecnh \u0111ang truy c\u1eadp \u0111\u0129a v\u00e0 h\u00e0ng \u0111\u1ee3i \u0111\u0129a.<\/p>\n<p>\u0110\u1ec3 benchmark (\u0111o ki\u1ec3m) hi\u1ec7u su\u1ea5t c\u1ee5 th\u1ec3 c\u1ee7a \u1ed5 \u0111\u0129a (IOPS, throughput), b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 c\u1ee7a b\u00ean th\u1ee9 ba nh\u01b0 CrystalDiskMark. C\u00f4ng c\u1ee5 n\u00e0y th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra \u0111\u1ecdc\/ghi tu\u1ea7n t\u1ef1 v\u00e0 ng\u1eabu nhi\u00ean v\u1edbi c\u00e1c k\u00edch th\u01b0\u1edbc kh\u1ed1i kh\u00e1c nhau, cho ra k\u1ebft qu\u1ea3 \u0111o l\u01b0\u1eddng chi ti\u1ebft.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lenh-kiem-tra-Disk-IO-tren-Linux-iotop-iostat-vmstat-dd-fio\"><\/span>L\u1ec7nh ki\u1ec3m tra Disk I\/O tr\u00ean Linux (iotop, iostat, vmstat, dd, fio)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng Linux, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi qu\u1ea3n l\u00fd VPS ho\u1eb7c server, c\u00f3 nhi\u1ec1u l\u1ec7nh d\u00f2ng l\u1ec7nh m\u1ea1nh m\u1ebd. <code>iotop<\/code> hi\u1ec3n th\u1ecb vi\u1ec7c s\u1eed d\u1ee5ng I\/O theo t\u1eebng ti\u1ebfn tr\u00ecnh, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 <code>top<\/code> cho CPU. <code>iostat<\/code> cung c\u1ea5p c\u00e1c th\u1ed1ng k\u00ea chi ti\u1ebft v\u1ec1 ho\u1ea1t \u0111\u1ed9ng I\/O c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb l\u01b0u tr\u1eef.<\/p>\n<p>L\u1ec7nh <code>vmstat<\/code> c\u0169ng b\u00e1o c\u00e1o c\u00e1c th\u00f4ng tin v\u1ec1 I\/O c\u00f9ng v\u1edbi c\u00e1c t\u00e0i nguy\u00ean h\u1ec7 th\u1ed1ng kh\u00e1c. \u0110\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra hi\u1ec7u su\u1ea5t \u0111\u01a1n gi\u1ea3n, l\u1ec7nh <code>dd<\/code> c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. \u0110\u1ed1i v\u1edbi c\u00e1c b\u00e0i benchmark ph\u1ee9c t\u1ea1p v\u00e0 t\u00f9y bi\u1ebfn cao, <code>fio<\/code> (Flexible I\/O Tester) l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 r\u1ea5t m\u1ea1nh m\u1ebd.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Nhan-dien-Bottleneck-Disk-IO-Cac-dau-hieu-canh-bao\"><\/span>Nh\u1eadn di\u1ec7n Bottleneck Disk I\/O: C\u00e1c d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Khi Disk I\/O tr\u1edf th\u00e0nh bottleneck c\u1ee7a h\u1ec7 th\u1ed1ng, hi\u1ec7u su\u1ea5t chung s\u1ebd b\u1ecb \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng. Vi\u1ec7c nh\u1eadn bi\u1ebft s\u1edbm c\u00e1c d\u1ea5u hi\u1ec7u n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c k\u1ecbp th\u1eddi, tr\u00e1nh l\u00e0m gi\u00e1n \u0111o\u1ea1n c\u00f4ng vi\u1ec7c ho\u1eb7c \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-05.jpg\" alt=\"Disk I\/O 05\" width=\"750\" height=\"500\" class=\"aligncenter size-full wp-image-28238\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-05.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-05-300x200.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"He-thong-hoat-dong-i-ach-ung-dung-thuong-xuyen-%E2%80%9Cdung-hinh%E2%80%9D-Not-Responding\"><\/span>H\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u00ec \u1ea1ch, \u1ee9ng d\u1ee5ng th\u01b0\u1eddng xuy\u00ean &#8220;\u0111\u1ee9ng h\u00ecnh&#8221; (Not Responding)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 d\u1ea5u hi\u1ec7u ph\u1ed5 bi\u1ebfn v\u00e0 d\u1ec5 nh\u1eadn th\u1ea5y nh\u1ea5t. M\u00e1y t\u00ednh ho\u1eb7c server c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 kh\u1edfi \u0111\u1ed9ng r\u1ea5t ch\u1eadm, c\u00e1c \u1ee9ng d\u1ee5ng m\u1ea5t nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 m\u1edf, ho\u1eb7c th\u01b0\u1eddng xuy\u00ean b\u1ecb treo, hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o &#8220;Not Responding&#8221;. C\u00e1c thao t\u00e1c \u0111\u01a1n gi\u1ea3n nh\u01b0 m\u1edf t\u1ec7p, duy\u1ec7t th\u01b0 m\u1ee5c c\u0169ng tr\u1edf n\u00ean ch\u1eadm ch\u1ea1p.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chi-so-Disk-Usage-Muc-su-dung-dia-luon-o-muc-cao-90-100\"><\/span>Ch\u1ec9 s\u1ed1 Disk Usage (M\u1ee9c s\u1eed d\u1ee5ng \u0111\u0129a) lu\u00f4n \u1edf m\u1ee9c cao (90-100%)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong Task Manager (Windows) ho\u1eb7c c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t t\u01b0\u01a1ng t\u1ef1 tr\u00ean Linux (v\u00ed d\u1ee5: <code>htop<\/code>, <code>glances<\/code>), n\u1ebfu b\u1ea1n th\u1ea5y c\u1ed9t &#8220;Disk&#8221; ho\u1eb7c &#8220;Disk Usage&#8221; li\u00ean t\u1ee5c \u1edf m\u1ee9c r\u1ea5t cao (tr\u00ean 90% ho\u1eb7c 100%) trong th\u1eddi gian d\u00e0i, \u0111\u00f3 l\u00e0 m\u1ed9t ch\u1ec9 b\u00e1o m\u1ea1nh m\u1ebd r\u1eb1ng \u1ed5 \u0111\u0129a \u0111ang b\u1ecb qu\u00e1 t\u1ea3i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thoi-gian-cho-IO-IO-Wait-time-tang-dot-bien-dac-biet-tren-Linux\"><\/span>Th\u1eddi gian ch\u1edd I\/O (I\/O Wait time) t\u0103ng \u0111\u1ed9t bi\u1ebfn (\u0111\u1eb7c bi\u1ec7t tr\u00ean Linux)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp, I\/O Wait l\u00e0 th\u1eddi gian CPU ph\u1ea3i ch\u1edd \u0111\u1ee3i c\u00e1c thao t\u00e1c I\/O ho\u00e0n t\u1ea5t. N\u1ebfu ch\u1ec9 s\u1ed1 n\u00e0y t\u0103ng cao (v\u00ed d\u1ee5, tr\u00ean 5-10% trong m\u1ed9t kho\u1ea3ng th\u1eddi gian d\u00e0i), \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 CPU kh\u00f4ng th\u1ec3 l\u00e0m vi\u1ec7c hi\u1ec7u qu\u1ea3 do ph\u1ea3i ch\u1edd \u1ed5 \u0111\u0129a, v\u00e0 Disk I\/O ch\u00ednh l\u00e0 &#8221; \u0443\u0437\u043a\u043e\u0435 \u043c\u0435\u0441\u0442\u043e &#8220;.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Den-bao-hoat-dong-cua-o-cung-nhap-nhay-lien-tuc-khong-ngung\"><\/span>\u0110\u00e8n b\u00e1o ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed5 c\u1ee9ng nh\u1ea5p nh\u00e1y li\u00ean t\u1ee5c kh\u00f4ng ng\u1eebng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>H\u1ea7u h\u1ebft c\u00e1c m\u00e1y t\u00ednh v\u00e0 server \u0111\u1ec1u c\u00f3 \u0111\u00e8n LED b\u00e1o hi\u1ec7u ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed5 c\u1ee9ng. N\u1ebfu \u0111\u00e8n n\u00e0y nh\u1ea5p nh\u00e1y li\u00ean t\u1ee5c ho\u1eb7c s\u00e1ng kh\u00f4ng ng\u1eebng ngh\u1ec9 ngay c\u1ea3 khi b\u1ea1n kh\u00f4ng th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c v\u1ee5 n\u1eb7ng, \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u \u1ed5 \u0111\u0129a \u0111ang ph\u1ea3i l\u00e0m vi\u1ec7c qu\u00e1 s\u1ee9c \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u I\/O.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Bi-quyet-toi-uu-va-cai-thien-hieu-suat-Disk-IO-co-ban\"><\/span>B\u00ed quy\u1ebft t\u1ed1i \u01b0u v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t Disk I\/O c\u01a1 b\u1ea3n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Sau khi x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c Disk I\/O l\u00e0 v\u1ea5n \u0111\u1ec1, c\u00f3 nhi\u1ec1u c\u00e1ch \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u00ecnh h\u00ecnh. C\u00e1c gi\u1ea3i ph\u00e1p bao g\u1ed3m t\u1eeb vi\u1ec7c n\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng \u0111\u1ebfn t\u1ed1i \u01b0u h\u00f3a ph\u1ea7n m\u1ec1m v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng. M\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5 nh\u01b0 <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/free-hosting\/\">Hosting mi\u1ec5n ph\u00ed<\/a> c\u00f3 th\u1ec3 c\u00f3 gi\u1edbi h\u1ea1n v\u1ec1 I\/O, n\u00ean vi\u1ec7c t\u1ed1i \u01b0u l\u00e0 c\u1ea7n thi\u1ebft.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-06.jpg\" alt=\"Disk I\/O 06\" width=\"750\" height=\"500\" class=\"aligncenter size-full wp-image-28239\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-06.jpg 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/05\/Disk-i-o-06-300x200.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Nang-cap-phan-cung-Giai-phap-%E2%80%9Cvang%E2%80%9D-cho-Disk-IO\"><\/span>N\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng: Gi\u1ea3i ph\u00e1p &#8220;v\u00e0ng&#8221; cho Disk I\/O<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 r\u00f5 r\u1ec7t nh\u1ea5t \u0111\u1ec3 c\u1ea3i thi\u1ec7n Disk I\/O l\u00e0 n\u00e2ng c\u1ea5p \u1ed5 c\u1ee9ng. N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng HDD, vi\u1ec7c chuy\u1ec3n sang SSD SATA s\u1ebd mang l\u1ea1i s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn. N\u1ebfu \u0111\u00e3 c\u00f3 SSD SATA v\u00e0 c\u1ea7n hi\u1ec7u su\u1ea5t cao h\u01a1n n\u1eefa, n\u00e2ng c\u1ea5p l\u00ean SSD NVMe l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Toi-uu-hoa-truy-van-co-so-du-lieu-va-cau-hinh-ung-dung\"><\/span>T\u1ed1i \u01b0u h\u00f3a truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u1ea5u h\u00ecnh \u1ee9ng d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng web v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u, vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a c\u00e1c truy v\u1ea5n SQL, t\u1ea1o index h\u1ee3p l\u00fd, v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c thao t\u00e1c \u0111\u1ecdc\/ghi kh\u00f4ng c\u1ea7n thi\u1ebft c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u1ea3i cho Disk I\/O. C\u1ea5u h\u00ecnh \u1ee9ng d\u1ee5ng \u0111\u1ec3 s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean hi\u1ec7u qu\u1ea3 h\u01a1n c\u0169ng r\u1ea5t quan tr\u1ecdng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tan-dung-hieu-qua-cac-co-che-Caching\"><\/span>T\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 c\u00e1c c\u01a1 ch\u1ebf Caching<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 s\u1eed d\u1ee5ng cache m\u1ed9t c\u00e1ch t\u1ed1i \u01b0u. T\u0103ng dung l\u01b0\u1ee3ng RAM c\u0169ng c\u00f3 th\u1ec3 gi\u00fap h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u00f3 nhi\u1ec1u kh\u00f4ng gian h\u01a1n cho page cache, t\u1eeb \u0111\u00f3 gi\u1ea3m s\u1ed1 l\u1ea7n truy c\u1eadp v\u00e0o \u1ed5 \u0111\u0129a ch\u1eadm h\u01a1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chong-phan-manh-o-dia-Luu-y-Chi-danh-cho-HDD\"><\/span>Ch\u1ed1ng ph\u00e2n m\u1ea3nh \u1ed5 \u0111\u0129a (L\u01b0u \u00fd: Ch\u1ec9 d\u00e0nh cho HDD)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi \u1ed5 c\u1ee9ng HDD truy\u1ec1n th\u1ed1ng, d\u1eef li\u1ec7u c\u00f3 th\u1ec3 b\u1ecb ph\u00e2n m\u1ea3nh theo th\u1eddi gian, khi\u1ebfn \u0111\u1ea7u \u0111\u1ecdc ph\u1ea3i di chuy\u1ec3n nhi\u1ec1u h\u01a1n \u0111\u1ec3 truy xu\u1ea5t m\u1ed9t t\u1ec7p ho\u00e0n ch\u1ec9nh. Th\u1ef1c hi\u1ec7n ch\u1ed1ng ph\u00e2n m\u1ea3nh (defragmentation) \u0111\u1ecbnh k\u1ef3 c\u00f3 th\u1ec3 gi\u00fap c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc tu\u1ea7n t\u1ef1. L\u01b0u \u00fd, vi\u1ec7c n\u00e0y kh\u00f4ng c\u1ea7n thi\u1ebft v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho \u1ed5 SSD.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Giai-dap-cac-cau-hoi-thuong-gap-ve-Disk-IO-FAQ\"><\/span>Gi\u1ea3i \u0111\u00e1p c\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Disk I\/O (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Xoay quanh ch\u1ee7 \u0111\u1ec1 Disk I\/O, c\u00f3 nhi\u1ec1u c\u00e2u h\u1ecfi m\u00e0 ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng xuy\u00ean th\u1eafc m\u1eafc. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn c\u00f9ng v\u1edbi c\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1c kh\u00eda c\u1ea1nh c\u1ee5 th\u1ec3 c\u1ee7a Input\/Output \u1ed5 c\u1ee9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Disk-IO-bao-nhieu-la-tot-cho-nhu-cau-cua-toi-website-VPS-gaming-luu-tru\"><\/span>Disk I\/O bao nhi\u00eau l\u00e0 t\u1ed1t cho nhu c\u1ea7u c\u1ee7a t\u00f4i (website, VPS gaming, l\u01b0u tr\u1eef)?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ee9c Disk I\/O &#8220;t\u1ed1t&#8221; ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o lo\u1ea1i h\u00ecnh s\u1eed d\u1ee5ng. M\u1ed9t blog c\u00e1 nh\u00e2n c\u00f3 th\u1ec3 ch\u1ec9 c\u1ea7n v\u00e0i tr\u0103m IOPS. Tuy nhi\u00ean, m\u1ed9t website th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed l\u1edbn ho\u1eb7c m\u1ed9t VPS gaming c\u00f3 th\u1ec3 c\u1ea7n h\u00e0ng ng\u00e0n, th\u1eadm ch\u00ed h\u00e0ng ch\u1ee5c ng\u00e0n IOPS v\u00e0 throughput cao \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng m\u01b0\u1ee3t m\u00e0.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Loi-%E2%80%9CDisk-IO-Error%E2%80%9D-xuat-hien-co-nghia-la-gi-va-cach-xu-ly-ban-dau\"><\/span>L\u1ed7i &#8220;Disk I\/O Error&#8221; xu\u1ea5t hi\u1ec7n c\u00f3 ngh\u0129a l\u00e0 g\u00ec v\u00e0 c\u00e1ch x\u1eed l\u00fd ban \u0111\u1ea7u?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8220;Disk I\/O Error&#8221; l\u00e0 m\u1ed9t th\u00f4ng b\u00e1o l\u1ed7i chung cho bi\u1ebft h\u1ec7 \u0111i\u1ec1u h\u00e0nh kh\u00f4ng th\u1ec3 \u0111\u1ecdc ho\u1eb7c ghi d\u1eef li\u1ec7u t\u1eeb\/\u0111\u1ebfn \u1ed5 \u0111\u0129a. Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 do c\u00e1p k\u1ebft n\u1ed1i l\u1ecfng, driver l\u1ed7i th\u1eddi, sector h\u1ecfng tr\u00ean \u1ed5 \u0111\u0129a, ho\u1eb7c th\u1eadm ch\u00ed \u1ed5 \u0111\u0129a s\u1eafp h\u1ecfng ho\u00e0n to\u00e0n. B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean l\u00e0 ki\u1ec3m tra k\u1ebft n\u1ed1i c\u00e1p v\u00e0 ch\u1ea1y c\u00f4ng c\u1ee5 ki\u1ec3m tra l\u1ed7i \u1ed5 \u0111\u0129a c\u1ee7a OS.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tai-sao-chi-so-Disk-IO-cua-toi-thuong-xuyen-o-muc-100\"><\/span>T\u1ea1i sao ch\u1ec9 s\u1ed1 Disk I\/O c\u1ee7a t\u00f4i th\u01b0\u1eddng xuy\u00ean \u1edf m\u1ee9c 100%?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Disk I\/O 100% li\u00ean t\u1ee5c cho th\u1ea5y \u1ed5 \u0111\u0129a \u0111ang l\u00e0 &#8221; \u0443\u0437\u043a\u043e\u0435 \u043c\u0435\u0441\u0442\u043e &#8220;. Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 do m\u1ed9t \u1ee9ng d\u1ee5ng n\u00e0o \u0111\u00f3 \u0111ang s\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u t\u00e0i nguy\u00ean \u0111\u0129a (v\u00ed d\u1ee5: ph\u1ea7n m\u1ec1m di\u1ec7t virus \u0111ang qu\u00e9t, Windows Update \u0111ang ch\u1ea1y), h\u1ec7 th\u1ed1ng b\u1ecb nhi\u1ec5m malware, ho\u1eb7c \u1ed5 c\u1ee9ng \u0111\u00e3 qu\u00e1 c\u0169 v\u00e0 kh\u00f4ng \u0111\u00e1p \u1ee9ng n\u1ed5i nhu c\u1ea7u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Co-phai-RAM-nhieu-hon-se-truc-tiep-cai-thien-Disk-IO-khong\"><\/span>C\u00f3 ph\u1ea3i RAM nhi\u1ec1u h\u01a1n s\u1ebd tr\u1ef1c ti\u1ebfp c\u1ea3i thi\u1ec7n Disk I\/O kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>RAM nhi\u1ec1u h\u01a1n kh\u00f4ng tr\u1ef1c ti\u1ebfp l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 v\u1eadt l\u00fd c\u1ee7a \u1ed5 \u0111\u0129a, nh\u01b0ng c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t Disk I\/O m\u1ed9t c\u00e1ch gi\u00e1n ti\u1ebfp. V\u1edbi nhi\u1ec1u RAM h\u01a1n, h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u00f3 th\u1ec3 l\u01b0u tr\u1eef nhi\u1ec1u d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy c\u1eadp th\u01b0\u1eddng xuy\u00ean h\u01a1n trong cache (b\u1ed9 nh\u1edb \u0111\u1ec7m). \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m s\u1ed1 l\u1ea7n ph\u1ea3i \u0111\u1ecdc t\u1eeb \u1ed5 \u0111\u0129a ch\u1eadm h\u01a1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Nam-vung-Disk-IO-Chia-khoa-cho-he-thong-nhanh-va-on-dinh\"><\/span>N\u1eafm v\u1eefng Disk I\/O: Ch\u00eca kh\u00f3a cho h\u1ec7 th\u1ed1ng nhanh v\u00e0 \u1ed5n \u0111\u1ecbnh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c hi\u1ec3u r\u00f5 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng, c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng v\u00e0 c\u00e1ch \u0111o l\u01b0\u1eddng Disk I\/O l\u00e0 ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng quan tr\u1ecdng cho b\u1ea5t k\u1ef3 ai l\u00e0m vi\u1ec7c v\u1edbi m\u00e1y t\u00ednh, t\u1eeb ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n \u0111\u1ebfn c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng chuy\u00ean nghi\u1ec7p. M\u1ed9t h\u1ec7 th\u1ed1ng v\u1edbi Disk I\/O \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u s\u1ebd ho\u1ea1t \u0111\u1ed9ng nhanh h\u01a1n, \u1ed5n \u0111\u1ecbnh h\u01a1n v\u00e0 mang l\u1ea1i tr\u1ea3i nghi\u1ec7m t\u1ed1t h\u01a1n.<\/p>\n<p>B\u1eb1ng c\u00e1ch ch\u1ee7 \u0111\u1ed9ng theo d\u00f5i, \u0111\u00e1nh gi\u00e1 v\u00e0 \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p c\u1ea3i thi\u1ec7n ph\u00f9 h\u1ee3p, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu n\u00e0y lu\u00f4n ho\u1ea1t \u0111\u1ed9ng \u1edf tr\u1ea1ng th\u00e1i t\u1ed1t nh\u1ea5t, g\u00f3p ph\u1ea7n n\u00e2ng cao hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 cho m\u1ecdi t\u00e1c v\u1ee5 b\u1ea1n th\u1ef1c hi\u1ec7n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y t\u00ednh hay m\u00e1y ch\u1ee7 ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1, trong \u0111\u00f3 Disk I\/O \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t. Hi\u1ec3u r\u00f5 Disk I\/O l\u00e0 g\u00ec s\u1ebd gi\u00fap b\u1ea1n t\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng, l\u1ef1a ch\u1ecdn ph\u1ea7n c\u1ee9ng ph\u00f9 h\u1ee3p v\u00e0 \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng m\u01b0\u1ee3t m\u00e0. B\u00e0i<\/p>\n","protected":false},"author":2,"featured_media":28240,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-28233","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vps"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/28233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=28233"}],"version-history":[{"count":1,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/28233\/revisions"}],"predecessor-version":[{"id":28241,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/28233\/revisions\/28241"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/28240"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=28233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=28233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=28233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}