{"id":15274,"date":"2025-03-19T14:58:36","date_gmt":"2025-03-19T07:58:36","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=15274"},"modified":"2026-03-26T14:24:03","modified_gmt":"2026-03-26T07:24:03","slug":"hypervisor-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/","title":{"rendered":"Hypervisor L\u00e0 G\u00ec? Ph\u00e2n Lo\u1ea1i V\u00e0 Vai Tr\u00f2 Trong H\u1ea1 T\u1ea7ng Server"},"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\/hypervisor-la-gi\/#Hypervisor-La-Gi-va-Vai-Tro-Trong-Ha-Tang-Server\" >Hypervisor L\u00e0 G\u00ec v\u00e0 Vai Tr\u00f2 Trong H\u1ea1 T\u1ea7ng Server<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Hypervisor-khac-gi-voi-phan-mem-ao-hoa-thong-thuong\" >Hypervisor kh\u00e1c g\u00ec v\u1edbi ph\u1ea7n m\u1ec1m \u1ea3o h\u00f3a th\u00f4ng th\u01b0\u1eddng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Tai-sao-server-hien-dai-can-hypervisor-thay-vi-chay-thang-nhieu-OS\" >T\u1ea1i sao server hi\u1ec7n \u0111\u1ea1i c\u1ea7n hypervisor thay v\u00ec ch\u1ea1y th\u1eb3ng nhi\u1ec1u OS?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Hai-Loai-Hypervisor-%E2%80%94-Type-1-va-Type-2\" >Hai Lo\u1ea1i Hypervisor \u2014 Type 1 v\u00e0 Type 2<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Type-1-Hypervisor-la-gi-va-tai-sao-datacenter-uu-tien-no\" >Type 1 Hypervisor l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao datacenter \u01b0u ti\u00ean n\u00f3?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Type-2-Hypervisor-phu-hop-cho-truong-hop-nao\" >Type 2 Hypervisor ph\u00f9 h\u1ee3p cho tr\u01b0\u1eddng h\u1ee3p n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#KVM-la-Type-1-hay-Type-2-Hypervisor\" >KVM l\u00e0 Type 1 hay Type 2 Hypervisor?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Cac-Hypervisor-Pho-Bien-Nhat-Hien-Nay\" >C\u00e1c Hypervisor Ph\u1ed5 Bi\u1ebfn Nh\u1ea5t Hi\u1ec7n Nay<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Hypervisor-Anh-Huong-Den-Hieu-Nang-May-Chu-Ao-Nhu-The-Nao\" >Hypervisor \u1ea2nh H\u01b0\u1edfng \u0110\u1ebfn Hi\u1ec7u N\u0103ng M\u00e1y Ch\u1ee7 \u1ea2o Nh\u01b0 Th\u1ebf N\u00e0o?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#May-Chu-Ao-Hieu-Nang-Cao-%E2%80%94-Hypervisor-Bare-metal-Khong-Overhead-Thua\" >M\u00e1y Ch\u1ee7 \u1ea2o Hi\u1ec7u N\u0103ng Cao \u2014 Hypervisor Bare-metal, Kh\u00f4ng Overhead Th\u1eeba<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Cau-Hoi-Thuong-Gap-ve-Hypervisor\" >C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p v\u1ec1 Hypervisor<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Hypervisor-va-container-Docker-khac-nhau-nhu-the-nao\" >Hypervisor v\u00e0 container (Docker) kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/hypervisor-la-gi\/#Mot-server-vat-ly-co-the-chay-duoc-bao-nhieu-VM\" >M\u1ed9t server v\u1eadt l\u00fd c\u00f3 th\u1ec3 ch\u1ea1y \u0111\u01b0\u1ee3c bao nhi\u00eau VM?<\/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\/hypervisor-la-gi\/#Hypervisor-co-an-toan-khong-VM-breakout-la-gi\" >Hypervisor c\u00f3 an to\u00e0n kh\u00f4ng? VM breakout l\u00e0 g\u00ec?<\/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\/hypervisor-la-gi\/#OpenVZ-co-phai-la-hypervisor-khong\" >OpenVZ c\u00f3 ph\u1ea3i l\u00e0 hypervisor kh\u00f4ng?<\/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\/hypervisor-la-gi\/#Lam-sao-biet-nha-cung-cap-VPS-dang-dung-hypervisor-gi\" >L\u00e0m sao bi\u1ebft nh\u00e0 cung c\u1ea5p VPS \u0111ang d\u00f9ng hypervisor g\u00ec?<\/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\/hypervisor-la-gi\/#Khi-Chon-VPS-Kiem-Tra-Hypervisor-Truoc-Khi-Ky-Hop-Dong\" >Khi Ch\u1ecdn VPS: Ki\u1ec3m Tra Hypervisor Tr\u01b0\u1edbc Khi K\u00fd H\u1ee3p \u0110\u1ed3ng<\/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\/hypervisor-la-gi\/#San-Sang-Dung-Thu-Khoi-Tao-VPS-Ngay-Sau-Thanh-Toan\" >S\u1eb5n S\u00e0ng D\u00f9ng Th\u1eed? Kh\u1edfi T\u1ea1o VPS Ngay Sau Thanh To\u00e1n<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p><!-- OVERVIEW INFORMATION --><\/p>\n<div class=\"summary\">\n<p><strong>T\u00f3m t\u1eaft nhanh:<\/strong> Hypervisor (Virtual Machine Monitor \u2014 VMM) l\u00e0 ph\u1ea7n m\u1ec1m ho\u1eb7c firmware n\u1eb1m gi\u1eefa ph\u1ea7n c\u1ee9ng server v\u00e0 c\u00e1c m\u00e1y \u1ea3o, ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o ra, ph\u00e2n b\u1ed5 v\u00e0 qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean CPU, RAM, storage cho t\u1eebng VM \u0111\u1ed9c l\u1eadp. M\u1ed7i VM ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t server ho\u00e0n to\u00e0n t\u00e1ch bi\u1ec7t d\u00f9 ch\u1ea1y tr\u00ean c\u00f9ng m\u1ed9t ph\u1ea7n c\u1ee9ng. \u0110\u00e2y l\u00e0 l\u1edbp n\u1ec1n t\u1ea3ng c\u1ee7a m\u1ecdi d\u1ecbch v\u1ee5 VPS v\u00e0 Cloud Server hi\u1ec7n \u0111\u1ea1i \u2014 lo\u1ea1i hypervisor quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u n\u0103ng v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a VPS b\u1ea1n thu\u00ea.<\/p>\n<ul>\n<li>Hypervisor c\u00f4 l\u1eadp t\u00e0i nguy\u00ean gi\u1eefa c\u00e1c VM \u2014 VM n\u00e0y kh\u00f4ng th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn VM kia<\/li>\n<li>Type 1 (bare-metal) ch\u1ea1y th\u1eb3ng l\u00ean ph\u1ea7n c\u1ee9ng, kh\u00f4ng c\u00f3 OS trung gian \u2014 overhead th\u1ea5p, hi\u1ec7u n\u0103ng cao h\u01a1n<\/li>\n<li>Type 2 ch\u1ea1y b\u00ean trong m\u1ed9t OS \u2014 ph\u00f9 h\u1ee3p dev\/test c\u00e1 nh\u00e2n, kh\u00f4ng d\u00f9ng cho production<\/li>\n<li>KVM, VMware ESXi, Microsoft Hyper-V l\u00e0 c\u00e1c Type 1 hypervisor ph\u1ed5 bi\u1ebfn trong th\u1ef1c t\u1ebf<\/li>\n<li>Nh\u00e0 cung c\u1ea5p VPS uy t\u00edn lu\u00f4n ghi r\u00f5 lo\u1ea1i hypervisor \u2014 th\u00f4ng tin n\u00e0y x\u1ee9ng \u0111\u00e1ng \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u01b0\u1edbc khi \u0111\u0103ng k\u00fd<\/li>\n<\/ul>\n<\/div>\n<p>\u0110ang so s\u00e1nh hai g\u00f3i VPS c\u00f9ng m\u1ee9c gi\u00e1, c\u00f9ng RAM, c\u00f9ng CPU \u2014 nh\u01b0ng m\u1ed9t c\u00e1i ghi &#8220;KVM hypervisor&#8221;, c\u00e1i kia kh\u00f4ng \u0111\u1ec1 c\u1eadp g\u00ec. B\u1ea1n kh\u00f4ng bi\u1ebft ch\u1ecdn c\u00e1i n\u00e0o, v\u00e0 c\u0169ng kh\u00f4ng r\u00f5 t\u1ea1i sao th\u00f4ng tin \u0111\u00f3 l\u1ea1i \u0111\u01b0\u1ee3c coi l\u00e0 quan tr\u1ecdng \u0111\u1ebfn v\u1eady.<\/p>\n<p>C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m \u1edf m\u1ed9t l\u1edbp ph\u1ea7n m\u1ec1m m\u00e0 h\u1ea7u h\u1ebft t\u00e0i li\u1ec7u VPS ch\u1ec9 nh\u1eafc qua loa: hypervisor. Kh\u00f4ng ph\u1ea3i t\u00ednh n\u0103ng th\u00eam, kh\u00f4ng ph\u1ea3i thu\u1eadt ng\u1eef marketing \u2014 hypervisor l\u00e0 th\u1ee9 t\u1ea1o ra VPS ngay t\u1eeb \u0111\u1ea7u, v\u00e0 c\u00e1ch n\u00f3 v\u1eadn h\u00e0nh quy\u1ebft \u0111\u1ecbnh VM b\u1ea1n thu\u00ea ch\u1ea1y nhanh hay ch\u1eadm, t\u00e0i nguy\u00ean c\u00f3 th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c c\u1ea5p ri\u00eang hay b\u1ecb chia chung kh\u00f4ng ki\u1ec3m so\u00e1t.<\/p>\n<p>B\u00e0i n\u00e0y \u0111i th\u1eb3ng v\u00e0o v\u1ea5n \u0111\u1ec1: hypervisor l\u00e0 g\u00ec, Type 1 v\u00e0 Type 2 kh\u00e1c nhau ra sao, v\u00e0 t\u1ea1i sao c\u00e2u h\u1ecfi &#8220;nh\u00e0 cung c\u1ea5p \u0111ang d\u00f9ng hypervisor g\u00ec?&#8221; x\u1ee9ng \u0111\u00e1ng \u0111\u01b0\u1ee3c h\u1ecfi tr\u01b0\u1edbc khi k\u00fd h\u1ee3p \u0111\u1ed3ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Hypervisor-La-Gi-va-Vai-Tro-Trong-Ha-Tang-Server\"><\/span>Hypervisor L\u00e0 G\u00ec v\u00e0 Vai Tr\u00f2 Trong H\u1ea1 T\u1ea7ng Server<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hypervisor l\u00e0 l\u1edbp ph\u1ea7n m\u1ec1m (ho\u1eb7c firmware) n\u1eb1m gi\u1eefa ph\u1ea7n c\u1ee9ng v\u1eadt l\u00fd v\u00e0 c\u00e1c m\u00e1y \u1ea3o, \u0111\u00f3ng vai tr\u00f2 trung gian ki\u1ec3m so\u00e1t to\u00e0n b\u1ed9 t\u00e0i nguy\u00ean hardware. Thay v\u00ec m\u1ed9t OS chi\u1ebfm d\u1ee5ng h\u1ebft CPU v\u00e0 RAM, hypervisor ph\u00e2n b\u1ed5 c\u00e1c t\u00e0i nguy\u00ean \u0111\u00f3 cho nhi\u1ec1u VM ch\u1ea1y song song \u2014 m\u1ed7i VM ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp ho\u00e0n to\u00e0n, kh\u00f4ng bi\u1ebft \u0111\u1ebfn s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a nhau.<\/p>\n<figure id=\"attachment_38338\" aria-describedby=\"caption-attachment-38338\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-38338\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-1.webp\" alt=\"Hypervisor\" width=\"800\" height=\"436\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-1.webp 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-1-300x164.webp 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-1-768x419.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-38338\" class=\"wp-caption-text\">Hypervisor<\/figcaption><\/figure>\n<p>Stack \u1ea3o h\u00f3a t\u1eeb th\u1ea5p \u0111\u1ebfn cao: <strong>Ph\u1ea7n c\u1ee9ng v\u1eadt l\u00fd \u2192 Hypervisor \u2192 M\u00e1y \u1ea3o (Guest OS + Application)<\/strong>. Hypervisor \u0111\u1ee9ng ngay tr\u00ean ph\u1ea7n c\u1ee9ng, ki\u1ec3m so\u00e1t tr\u1ef1c ti\u1ebfp CPU, RAM, card m\u1ea1ng v\u00e0 storage controller, r\u1ed3i tr\u00ecnh b\u00e0y m\u1ed9t phi\u00ean b\u1ea3n &#8220;\u1ea3o&#8221; c\u1ee7a c\u00e1c t\u00e0i nguy\u00ean \u0111\u00f3 cho t\u1eebng VM b\u00ean tr\u00ean.<\/p>\n<p>\u00dd t\u01b0\u1edfng n\u00e0y kh\u00f4ng h\u1ec1 m\u1edbi. IBM \u0111\u00e3 tri\u1ec3n khai hypervisor \u0111\u1ea7u ti\u00ean tr\u00ean h\u1ec7 th\u1ed1ng CP-40 t\u1eeb n\u0103m 1967 \u2014 m\u1ee5c \u0111\u00edch ban \u0111\u1ea7u \u0111\u01a1n gi\u1ea3n l\u00e0 \u0111\u1ec3 nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng c\u00f9ng chia s\u1ebb m\u1ed9t mainframe \u0111\u1eaft ti\u1ec1n. Nguy\u00ean l\u00fd \u0111\u00f3 gi\u1eef nguy\u00ean \u0111\u1ebfn t\u1eadn h\u00f4m nay, ch\u1ec9 l\u00e0 ph\u1ea7n c\u1ee9ng hi\u1ec7n \u0111\u1ea1i nhanh h\u01a1n v\u00e0i tri\u1ec7u l\u1ea7n.<\/p>\n<p>\u0110\u1ec3 ph\u00e2n bi\u1ec7t v\u1edbi OS th\u00f4ng th\u01b0\u1eddng: OS qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean cho <em>m\u1ed9t<\/em> h\u1ec7 th\u1ed1ng. Hypervisor qu\u1ea3n l\u00fd cho <em>nhi\u1ec1u<\/em> h\u1ec7 th\u1ed1ng c\u00f4 l\u1eadp <em>c\u00f9ng l\u00fac<\/em>. \u0110\u00e2y l\u00e0 \u0111i\u1ec3m kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i. N\u1ebfu b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng n\u1ec1n ki\u1ebfn th\u1ee9c v\u1ec1 VPS t\u1eeb \u0111\u1ea7u, b\u00e0i <a href=\"https:\/\/interdata.vn\/blog\/vps-la-gi\/\" target=\"_blank\" rel=\"noopener\">VPS l\u00e0 g\u00ec v\u00e0 c\u00e1ch ch\u1ecdn g\u00f3i ph\u00f9 h\u1ee3p<\/a> s\u1ebd cho b\u1ee9c tranh r\u1ed9ng h\u01a1n tr\u01b0\u1edbc khi \u0111i s\u00e2u v\u00e0o layer hypervisor n\u00e0y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hypervisor-khac-gi-voi-phan-mem-ao-hoa-thong-thuong\"><\/span>Hypervisor kh\u00e1c g\u00ec v\u1edbi ph\u1ea7n m\u1ec1m \u1ea3o h\u00f3a th\u00f4ng th\u01b0\u1eddng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8220;\u1ea2o h\u00f3a&#8221; (virtualization) l\u00e0 kh\u00e1i ni\u1ec7m, hypervisor l\u00e0 <em>c\u00f4ng c\u1ee5 th\u1ef1c thi<\/em> \u1ea3o h\u00f3a \u0111\u00f3. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 &#8220;database&#8221; l\u00e0 kh\u00e1i ni\u1ec7m c\u00f2n MySQL hay PostgreSQL m\u1edbi l\u00e0 c\u00f4ng c\u1ee5 c\u1ee5 th\u1ec3 \u2014 kh\u00f4ng th\u1ec3 n\u00f3i &#8220;t\u00f4i \u0111ang d\u00f9ng database&#8221; m\u00e0 kh\u00f4ng ch\u1ec9 r\u00f5 h\u1ec7 qu\u1ea3n tr\u1ecb g\u00ec \u0111\u1eb1ng sau.<\/p>\n<p>Khi spec nh\u00e0 cung c\u1ea5p ghi &#8220;server \u0111\u01b0\u1ee3c \u1ea3o h\u00f3a&#8221;, \u0111\u00f3 l\u00e0 n\u00f3i v\u1ec1 ki\u1ebfn tr\u00fac. Khi ghi &#8220;ch\u1ea1y tr\u00ean KVM hypervisor&#8221;, m\u1edbi l\u00e0 th\u00f4ng tin th\u1ef1c s\u1ef1 c\u00f3 gi\u00e1 tr\u1ecb k\u1ef9 thu\u1eadt. S\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y quan tr\u1ecdng khi \u0111\u1ecdc t\u00e0i li\u1ec7u: &#8220;c\u00f3 h\u1ed7 tr\u1ee3 \u1ea3o h\u00f3a&#8221; v\u00e0 &#8220;ch\u1ea1y KVM bare-metal&#8221; l\u00e0 hai m\u1ee9c \u0111\u1ed9 th\u00f4ng tin ho\u00e0n to\u00e0n kh\u00e1c nhau.<\/p>\n<p>VMM (Virtual Machine Monitor) \u2014 t\u00ean k\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c c\u1ee7a hypervisor \u2014 th\u1ef1c thi c\u00e1c l\u1ec7nh c\u1ee7a Guest OS l\u00ean ph\u1ea7n c\u1ee9ng th\u1eadt. C\u00e1c l\u1edbp qu\u1ea3n l\u00fd \u1edf tr\u00ean nh\u01b0 vSphere (VMware) hay Proxmox VE ch\u1ec9 l\u00e0 giao di\u1ec7n \u0111i\u1ec1u khi\u1ec3n, kh\u00f4ng ph\u1ea3i hypervisor. Hypervisor m\u1edbi l\u00e0 th\u1ee9 l\u00e0m vi\u1ec7c th\u1eadt s\u1ef1 \u1edf d\u01b0\u1edbi c\u00f9ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tai-sao-server-hien-dai-can-hypervisor-thay-vi-chay-thang-nhieu-OS\"><\/span>T\u1ea1i sao server hi\u1ec7n \u0111\u1ea1i c\u1ea7n hypervisor thay v\u00ec ch\u1ea1y th\u1eb3ng nhi\u1ec1u OS?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e2u h\u1ecfi t\u01b0\u1edfng ng\u00e2y th\u01a1 nh\u01b0ng ho\u00e0n to\u00e0n h\u1ee3p l\u00fd: sao kh\u00f4ng c\u00e0i nhi\u1ec1u OS l\u00ean c\u00f9ng m\u1ed9t server, mu\u1ed1n d\u00f9ng c\u00e1i n\u00e0o th\u00ec boot c\u00e1i \u0111\u00f3? C\u00f3 ba l\u00fd do c\u1ed1t l\u00f5i khi\u1ebfn c\u00e1ch \u0111\u00f3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u1edf quy m\u00f4 datacenter.<\/p>\n<p><strong>Resource isolation.<\/strong> Nhi\u1ec1u OS c\u00f9ng boot l\u00ean kh\u00f4ng t\u1ef1 c\u00f4 l\u1eadp t\u00e0i nguy\u00ean \u2014 ch\u00fang tranh nhau CPU v\u00e0 RAM m\u00e0 kh\u00f4ng c\u00f3 c\u01a1 ch\u1ebf ki\u1ec3m so\u00e1t. Hypervisor ph\u00e2n v\u00f9ng c\u1ee9ng: VM A \u0111\u01b0\u1ee3c c\u1ea5p 4 CPU cores v\u00e0 8GB RAM, VM B kh\u00f4ng th\u1ec3 l\u1ea5y th\u00eam d\u00f9 server c\u00f2n t\u00e0i nguy\u00ean tr\u1ed1ng.<\/p>\n<p><strong>Hardware utilization.<\/strong> Theo nghi\u00ean c\u1ee9u c\u1ee7a IDC, server v\u1eadt l\u00fd trung b\u00ecnh ch\u1ec9 d\u00f9ng 10\u201315% c\u00f4ng su\u1ea5t th\u1ef1c t\u1ebf khi ch\u1ea1y kh\u00f4ng \u1ea3o h\u00f3a. Hypervisor cho ph\u00e9p m\u1ed9t server v\u1eadt l\u00fd \u0111\u1eaft ti\u1ec1n ch\u1ea1y 20\u201350 VM \u0111\u1ed3ng th\u1eddi \u2014 t\u1eadn d\u1ee5ng ph\u1ea7n c\u1ee9ng t\u1ed1i \u0111a thay v\u00ec \u0111\u1ec3 tr\u1ed1ng 85% capacity.<\/p>\n<p><strong>Hardware independence.<\/strong> VM c\u00f3 th\u1ec3 di chuy\u1ec3n gi\u1eefa c\u00e1c server v\u1eadt l\u00fd (live migration) m\u00e0 kh\u00f4ng c\u1ea7n c\u00e0i l\u1ea1i OS hay \u1ee9ng d\u1ee5ng, v\u00ec hypervisor tr\u1eebu t\u01b0\u1ee3ng h\u00f3a ho\u00e0n to\u00e0n ph\u1ea7n c\u1ee9ng b\u00ean d\u01b0\u1edbi. T\u00ednh n\u0103ng n\u00e0y l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a m\u1ecdi d\u1ecbch v\u1ee5 cloud hi\u1ec7n \u0111\u1ea1i \u2014 t\u1eeb AWS cho \u0111\u1ebfn VPS th\u01b0\u01a1ng m\u1ea1i th\u00f4ng th\u01b0\u1eddng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Hai-Loai-Hypervisor-%E2%80%94-Type-1-va-Type-2\"><\/span>Hai Lo\u1ea1i Hypervisor \u2014 Type 1 v\u00e0 Type 2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Type 1 v\u00e0 Type 2 ph\u00e2n bi\u1ec7t nhau \u1edf m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t, nh\u01b0ng h\u1eadu qu\u1ea3 v\u1ec1 hi\u1ec7u n\u0103ng v\u00e0 b\u1ea3o m\u1eadt th\u00ec l\u1edbn: hypervisor ch\u1ea1y <em>tr\u1ef1c ti\u1ebfp l\u00ean ph\u1ea7n c\u1ee9ng<\/em> hay ch\u1ea1y <em>b\u00ean trong m\u1ed9t OS<\/em>.<\/p>\n<table>\n<thead>\n<tr>\n<th>Ti\u00eau ch\u00ed<\/th>\n<th>Type 1 (Bare-metal)<\/th>\n<th>Type 2 (Hosted)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ch\u1ea1y tr\u00ean<\/td>\n<td>Ph\u1ea7n c\u1ee9ng tr\u1ef1c ti\u1ebfp<\/td>\n<td>B\u00ean trong m\u1ed9t OS (host OS)<\/td>\n<\/tr>\n<tr>\n<td>Hi\u1ec7u n\u0103ng<\/td>\n<td>Cao \u2014 overhead th\u1ea5p<\/td>\n<td>Th\u1ea5p h\u01a1n \u2014 th\u00eam 1 l\u1edbp OS<\/td>\n<\/tr>\n<tr>\n<td>V\u00ed d\u1ee5 ph\u1ed5 bi\u1ebfn<\/td>\n<td>KVM, VMware ESXi, Hyper-V, Xen<\/td>\n<td>VirtualBox, VMware Workstation<\/td>\n<\/tr>\n<tr>\n<td>D\u00f9ng trong<\/td>\n<td>Production server, VPS th\u01b0\u01a1ng m\u1ea1i, Cloud<\/td>\n<td>Dev\/test c\u00e1 nh\u00e2n, h\u1ecdc t\u1eadp<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3o m\u1eadt<\/td>\n<td>Cao h\u01a1n \u2014 attack surface nh\u1ecf<\/td>\n<td>Th\u1ea5p h\u01a1n \u2014 attack surface l\u1edbn h\u01a1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Type-1-Hypervisor-la-gi-va-tai-sao-datacenter-uu-tien-no\"><\/span>Type 1 Hypervisor l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao datacenter \u01b0u ti\u00ean n\u00f3?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Type 1 hypervisor \u2014 bare-metal hypervisor \u2014 ch\u1ea1y th\u1eb3ng l\u00ean ph\u1ea7n c\u1ee9ng, kh\u00f4ng c\u1ea7n OS trung gian. N\u00f3 ki\u1ec3m so\u00e1t tr\u1ef1c ti\u1ebfp CPU, RAM, card m\u1ea1ng v\u00e0 storage controller. Kh\u00f4ng c\u00f3 OS &#8220;cha&#8221; n\u00e0o \u1edf gi\u1eefa ngh\u0129a l\u00e0 kh\u00f4ng c\u00f3 th\u00eam l\u1edbp x\u1eed l\u00fd th\u1eeba \u2014 overhead th\u1ea5p, hi\u1ec7u n\u0103ng cao, \u0111\u00e2y l\u00e0 l\u00fd do n\u00f3 l\u00e0 l\u1ef1a ch\u1ecdn duy nh\u1ea5t cho m\u00f4i tr\u01b0\u1eddng production.<\/p>\n<p>C\u00e1c \u0111\u1ea1i di\u1ec7n ph\u1ed5 bi\u1ebfn: <strong>KVM<\/strong> (t\u00edch h\u1ee3p s\u00e2u v\u00e0o Linux kernel), <strong>VMware ESXi<\/strong> (enterprise standard), <strong>Microsoft Hyper-V<\/strong> (\u0111i k\u00e8m Windows Server), <strong>Xen<\/strong> (d\u00f9ng trong AWS giai \u0111o\u1ea1n \u0111\u1ea7u). T\u1ea5t c\u1ea3 VPS th\u01b0\u01a1ng m\u1ea1i v\u00e0 cloud provider l\u1edbn \u0111\u1ec1u ch\u1ea1y Type 1 \u2014 \u0111\u00e2y kh\u00f4ng ph\u1ea3i xu h\u01b0\u1edbng, \u0111\u00f3 l\u00e0 technical requirement khi v\u1eadn h\u00e0nh \u1edf quy m\u00f4 h\u00e0ng ngh\u00ecn VM.<\/p>\n<p>T\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt KVM tr\u00ean kernel.org m\u00f4 t\u1ea3 n\u00f3 l\u00e0 &#8220;full virtualization solution for Linux on x86 hardware containing virtualization extensions&#8221;. KVM tr\u1edf th\u00e0nh module c\u1ee7a Linux kernel t\u1eeb phi\u00ean b\u1ea3n 2.6.20 \u2014 c\u00f3 ngh\u0129a l\u00e0 m\u1ecdi Linux kernel hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u c\u00f3 s\u1eb5n kh\u1ea3 n\u0103ng hypervisor m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea7n m\u1ec1m ngo\u00e0i.<\/p>\n<figure id=\"attachment_40624\" aria-describedby=\"caption-attachment-40624\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-40624\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-Type-1.webp\" alt=\"Hypervisor Type 1\" width=\"800\" height=\"437\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-Type-1.webp 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-Type-1-300x164.webp 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-Type-1-768x420.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-40624\" class=\"wp-caption-text\">Hypervisor Type 1<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Type-2-Hypervisor-phu-hop-cho-truong-hop-nao\"><\/span>Type 2 Hypervisor ph\u00f9 h\u1ee3p cho tr\u01b0\u1eddng h\u1ee3p n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Type 2 hypervisor ch\u1ea1y b\u00ean trong m\u1ed9t OS \u0111\u00e3 c\u00f3 s\u1eb5n \u2014 OS \u0111\u00f3 g\u1ecdi l\u00e0 host OS. V\u00ed d\u1ee5 b\u1ea1n \u0111\u00e3 g\u1eb7p: <strong>VirtualBox<\/strong> ch\u1ea1y tr\u00ean Windows ho\u1eb7c macOS, <strong>VMware Workstation<\/strong> tr\u00ean Linux. Khi b\u1ea1n t\u1ea1o m\u1ed9t m\u00e1y \u1ea3o Ubuntu tr\u00ean laptop Windows \u0111\u1ec3 test code, \u0111\u00f3 l\u00e0 Type 2 \u0111ang ch\u1ea1y.<\/p>\n<p>Ph\u00f9 h\u1ee3p nh\u1ea5t cho: h\u1ecdc t\u1eadp, th\u1eed nghi\u1ec7m OS l\u1ea1, m\u00f4i tr\u01b0\u1eddng dev c\u1ea7n c\u00f4 l\u1eadp nh\u1eb9. Kh\u00f4ng ph\u00f9 h\u1ee3p production v\u00ec th\u00eam m\u1ed9t l\u1edbp OS trung gian \u0111\u1ed3ng ngh\u0129a v\u1edbi overhead cao h\u01a1n v\u00e0 attack surface r\u1ed9ng h\u01a1n. VirtualBox v\u1edbi KVM trong m\u00f4i tr\u01b0\u1eddng production l\u00e0 ph\u00e9p so s\u00e1nh sai l\u1ec7ch \u2014 ch\u00fang ph\u1ee5c v\u1ee5 hai m\u1ee5c \u0111\u00edch ho\u00e0n to\u00e0n kh\u00e1c nhau.<\/p>\n<figure id=\"attachment_40625\" aria-describedby=\"caption-attachment-40625\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-40625\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-Type-2.webp\" alt=\"Hypervisor Type 2\" width=\"800\" height=\"437\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-Type-2.webp 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-Type-2-300x164.webp 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/03\/Hypervisor-Type-2-768x420.webp 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-40625\" class=\"wp-caption-text\">Hypervisor Type 2<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"KVM-la-Type-1-hay-Type-2-Hypervisor\"><\/span>KVM l\u00e0 Type 1 hay Type 2 Hypervisor?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>KVM (Kernel-based Virtual Machine) l\u00e0 Type 1 hypervisor, \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o Linux kernel t\u1eeb phi\u00ean b\u1ea3n 2.6.20 n\u0103m 2007. N\u00f3 kh\u00f4ng ch\u1ea1y &#8220;tr\u00ean&#8221; Linux \u2014 n\u00f3 <em>l\u00e0<\/em> m\u1ed9t ph\u1ea7n c\u1ee7a Linux kernel, truy c\u1eadp ph\u1ea7n c\u1ee9ng tr\u1ef1c ti\u1ebfp qua kernel module.<\/p>\n<p>L\u00fd do KVM th\u1ed1ng tr\u1ecb VPS Linux hi\u1ec7n nay kh\u00f4ng ch\u1ec9 v\u00ec open source. AWS, Google Cloud, v\u00e0 ph\u1ea7n l\u1edbn c\u00e1c cloud provider l\u1edbn \u0111\u1ec1u d\u00f9ng KVM ho\u1eb7c fork c\u1ee7a n\u00f3 l\u00e0m n\u1ec1n t\u1ea3ng hypervisor. \u0110\u00e2y l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a nhi\u1ec1u n\u0103m t\u1ed1i \u01b0u v\u00e0 ki\u1ec3m ch\u1ee9ng \u1edf quy m\u00f4 c\u1ef1c l\u1edbn, kh\u00f4ng ph\u1ea3i l\u1ef1a ch\u1ecdn v\u00ec thi\u1ebfu l\u1ef1a ch\u1ecdn. C\u00e1c g\u00f3i VPS\u00a0t\u1ea1i InterData ch\u1ea1y tr\u1ef1c ti\u1ebfp tr\u00ean n\u1ec1n n\u00e0y \u2014 Type 1 bare-metal, t\u00e0i nguy\u00ean ri\u00eang bi\u1ec7t.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-Hypervisor-Pho-Bien-Nhat-Hien-Nay\"><\/span>C\u00e1c Hypervisor Ph\u1ed5 Bi\u1ebfn Nh\u1ea5t Hi\u1ec7n Nay<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Bi\u1ebft t\u00ean hypervisor gi\u00fap b\u1ea1n \u0111\u1ecdc hi\u1ec3u spec nh\u00e0 cung c\u1ea5p v\u00e0 nh\u1eadn ra ngay m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh khi th\u1ea5y ch\u00fang trong t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt.<\/p>\n<table>\n<thead>\n<tr>\n<th>Hypervisor<\/th>\n<th>\u0110\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt<\/th>\n<th>Ai n\u00ean quan t\u00e2m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>KVM<\/strong><\/td>\n<td>Open source, t\u00edch h\u1ee3p Linux kernel, overhead th\u1ea5p<\/td>\n<td>Ng\u01b0\u1eddi thu\u00ea VPS Linux, dev d\u00f9ng cloud<\/td>\n<\/tr>\n<tr>\n<td><strong>VMware ESXi<\/strong><\/td>\n<td>Enterprise-grade, h\u1ec7 sinh th\u00e1i qu\u1ea3n l\u00fd m\u1ea1nh (vSphere)<\/td>\n<td>Doanh nghi\u1ec7p l\u1edbn, IT corp c\u00f3 budget<\/td>\n<\/tr>\n<tr>\n<td><strong>Microsoft Hyper-V<\/strong><\/td>\n<td>T\u00edch h\u1ee3p s\u1eb5n Windows Server, qu\u1ea3n l\u00fd qua GUI<\/td>\n<td>M\u00f4i tr\u01b0\u1eddng Windows Server, domain AD<\/td>\n<\/tr>\n<tr>\n<td><strong>Xen<\/strong><\/td>\n<td>D\u00f9ng trong AWS giai \u0111o\u1ea1n \u0111\u1ea7u, h\u1ed7 tr\u1ee3 paravirtualization<\/td>\n<td>Nghi\u00ean c\u1ee9u cloud history, Citrix shop<\/td>\n<\/tr>\n<tr>\n<td><strong>Proxmox VE<\/strong><\/td>\n<td>Open source, giao di\u1ec7n web, t\u00edch h\u1ee3p KVM + LXC<\/td>\n<td>T\u1ef1 d\u1ef1ng homelab, private cloud nh\u1ecf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"info-box\"><strong>M\u1ed9t \u0111i\u1ec3m th\u1ef1c t\u1ebf:<\/strong> Proxmox VE kh\u00f4ng ph\u1ea3i hypervisor thu\u1ea7n \u2014 n\u00f3 l\u00e0 n\u1ec1n qu\u1ea3n l\u00fd t\u00edch h\u1ee3p KVM v\u00e0 LXC container tr\u00ean m\u1ed9t giao di\u1ec7n web. Nhi\u1ec1u VPS provider nh\u1ecf d\u00f9ng Proxmox l\u00e0m control plane nh\u01b0ng hypervisor th\u1ef1c s\u1ef1 b\u00ean d\u01b0\u1edbi v\u1eabn l\u00e0 KVM. Xen \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n trong VPS th\u01b0\u01a1ng m\u1ea1i m\u1edbi, nh\u01b0ng v\u1eabn t\u1ed3n t\u1ea1i trong m\u1ed9t s\u1ed1 h\u1ea1 t\u1ea7ng c\u0169 \u2014 \u0111\u1eb7c bi\u1ec7t \u1edf c\u00e1c provider \u0111\u00e3 v\u1eadn h\u00e0nh t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 2010.<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Hypervisor-Anh-Huong-Den-Hieu-Nang-May-Chu-Ao-Nhu-The-Nao\"><\/span>Hypervisor \u1ea2nh H\u01b0\u1edfng \u0110\u1ebfn Hi\u1ec7u N\u0103ng M\u00e1y Ch\u1ee7 \u1ea2o Nh\u01b0 Th\u1ebf N\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1ed7i hypervisor \u0111\u1ec1u ti\u00eau th\u1ee5 m\u1ed9t ph\u1ea7n t\u00e0i nguy\u00ean \u0111\u1ec3 t\u1ef1 v\u1eadn h\u00e0nh \u2014 ph\u1ea7n n\u00e0y g\u1ecdi l\u00e0 <strong>overhead<\/strong>. V\u1edbi Type 1, overhead th\u1ea5p v\u00ec kh\u00f4ng c\u00f3 OS trung gian. V\u1edbi Type 2, overhead cao h\u01a1n r\u00f5 r\u1ec7t v\u00ec m\u1ecdi l\u1ec7nh c\u1ee7a VM ph\u1ea3i \u0111i qua th\u00eam m\u1ed9t l\u1edbp host OS tr\u01b0\u1edbc khi ch\u1ea1m ph\u1ea7n c\u1ee9ng.<\/p>\n<p>V\u1edbi KVM c\u1ee5 th\u1ec3, Red Hat Engineering \u2014 nh\u00e0 \u0111\u00f3ng g\u00f3p ch\u00ednh v\u00e0o KVM upstream \u2014 ghi nh\u1eadn overhead \u1edf m\u1ee9c r\u1ea5t th\u1ea5p trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf, th\u01b0\u1eddng d\u01b0\u1edbi 5% khi benchmark t\u1ed5ng h\u1ee3p d\u00f9ng c\u00f4ng c\u1ee5 nh\u01b0 <code>fio<\/code> (I\/O) ho\u1eb7c <code>sysbench<\/code> (CPU\/memory). Con s\u1ed1 th\u1ef1c t\u1ebf ph\u1ee5 thu\u1ed9c workload, nh\u01b0ng ch\u01b0a c\u00f3 benchmark \u0111\u1ed9c l\u1eadp n\u00e0o cho th\u1ea5y KVM thua k\u00e9m so v\u1edbi bare-metal \u1edf m\u1ee9c \u0111\u00e1ng lo ng\u1ea1i trong \u0111i\u1ec1u ki\u1ec7n s\u1ea3n xu\u1ea5t th\u00f4ng th\u01b0\u1eddng.<\/p>\n<p>Kh\u00e1c h\u1eb3n v\u1edbi Type 2: benchmark VirtualBox tr\u00ean c\u00f9ng workload I\/O n\u1eb7ng cho th\u1ea5y s\u1ef1 ch\u00eanh l\u1ec7ch so v\u1edbi native c\u00f3 th\u1ec3 l\u00ean 20\u201340% t\u00f9y c\u1ea5u h\u00ecnh \u2014 con s\u1ed1 n\u00e0y gi\u1ea3i th\u00edch t\u1ea1i sao VirtualBox kh\u00f4ng c\u00f3 m\u1eb7t trong b\u1ea5t k\u1ef3 production datacenter nghi\u00eam t\u00fac n\u00e0o.<\/p>\n<div class=\"info-box\"><strong>H\u1ec7 qu\u1ea3 th\u1ef1c t\u1ebf khi ch\u1ecdn m\u00e1y ch\u1ee7 \u1ea3o (VPS\/Cloud Server):<\/strong> c\u00f9ng c\u1ea5u h\u00ecnh 4 vCPU \/ 8GB RAM, m\u00e1y ch\u1ee7 \u1ea3o ch\u1ea1y KVM cho hi\u1ec7u n\u0103ng t\u1ed1t h\u01a1n VPS ch\u1ea1y container-based nh\u01b0 OpenVZ \u2014 kh\u00f4ng ph\u1ea3i v\u00ec CPU hay RAM, m\u00e0 v\u00ec c\u00e1ch hypervisor x\u1eed l\u00fd t\u00e0i nguy\u00ean \u1edf c\u1ea5p th\u1ea5p nh\u1ea5t. \u0110\u00e2y l\u00e0 th\u1ee9 spec sheet th\u01b0\u1eddng kh\u00f4ng ghi r\u00f5 nh\u01b0ng ng\u01b0\u1eddi v\u1eadn h\u00e0nh server \u0111\u1ec1u bi\u1ebft.<\/div>\n<p><!-- CTA BOX #1 --><\/p>\n<div style=\"background: linear-gradient(135deg, #1a3c6e 0%, #0f6cbf 100%); border-radius: 12px; padding: 28px 32px; margin: 40px 0; max-width: 100%; box-shadow: 0 4px 20px rgba(15,108,191,0.25);\">\n<div style=\"display: inline-block; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3); border-radius: 20px; padding: 4px 14px; margin-bottom: 16px;\"><span style=\"color: #ffffff; font-size: 12px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase;\">InterData<\/span><\/div>\n<h3 style=\"color: #ffffff; font-size: 22px; font-weight: bold; margin: 0 0 8px 0; line-height: 1.3;\"><span class=\"ez-toc-section\" id=\"May-Chu-Ao-Hieu-Nang-Cao-%E2%80%94-Hypervisor-Bare-metal-Khong-Overhead-Thua\"><\/span>M\u00e1y Ch\u1ee7 \u1ea2o Hi\u1ec7u N\u0103ng Cao \u2014 Hypervisor Bare-metal, Kh\u00f4ng Overhead Th\u1eeba<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"color: rgba(255,255,255,0.85); font-size: 15px; margin: 0 0 20px 0; line-height: 1.6;\">InterData v\u1eadn h\u00e0nh h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 \u1ea3o tr\u00ean n\u1ec1n KVM hypervisor \u2014 Type 1 bare-metal, CPU AMD\/Intel th\u1ebf h\u1ec7 m\u1edbi, SSD NVMe U.2, b\u0103ng th\u00f4ng \u0111a m\u1ea1ng Viettel + FPT. T\u00e0i nguy\u00ean ri\u00eang, kh\u00f4ng chia s\u1ebb.<\/p>\n<ul style=\"list-style: none; padding: 0; margin: 0 0 24px 0;\">\n<li style=\"color: rgba(255,255,255,0.9); font-size: 14px; padding: 5px 0; display: flex; align-items: flex-start;\"><span style=\"color: #4fc3f7; font-size: 16px; margin-right: 8px; flex-shrink: 0;\">\u2713<\/span>KVM Type 1 bare-metal \u2014 kh\u00f4ng overhead t\u1eeb host OS<\/li>\n<li style=\"color: rgba(255,255,255,0.9); font-size: 14px; padding: 5px 0; display: flex; align-items: flex-start;\"><span style=\"color: #4fc3f7; font-size: 16px; margin-right: 8px; flex-shrink: 0;\">\u2713<\/span>CPU AMD\/Intel th\u1ebf h\u1ec7 m\u1edbi + SSD NVMe U.2 t\u1ed1c \u0111\u1ed9 cao<\/li>\n<li style=\"color: rgba(255,255,255,0.9); font-size: 14px; padding: 5px 0; display: flex; align-items: flex-start;\"><span style=\"color: #4fc3f7; font-size: 16px; margin-right: 8px; flex-shrink: 0;\">\u2713<\/span>B\u0103ng th\u00f4ng \u0111a m\u1ea1ng Viettel + FPT, t\u00e0i nguy\u00ean ri\u00eang bi\u1ec7t<\/li>\n<\/ul>\n<div style=\"display: flex; gap: 12px; flex-wrap: wrap;\"><a style=\"display: inline-block; background: #ffffff; color: #1a3c6e; font-size: 15px; font-weight: bold; text-decoration: none; padding: 12px 28px; border-radius: 8px;\" href=\"https:\/\/interdata.vn\/thue-vps\/\" target=\"_blank\" rel=\"noopener\">Mua VPS Gi\u00e1 R\u1ebb \u2192<\/a><br \/>\n<a style=\"display: inline-block; background: rgba(255,255,255,0.15); color: #ffffff; font-size: 15px; font-weight: 600; text-decoration: none; padding: 12px 28px; border-radius: 8px; border: 1px solid rgba(255,255,255,0.4);\" href=\"https:\/\/interdata.vn\/cloud-server\/\" target=\"_blank\" rel=\"noopener\">Mua Cloud Server Gi\u00e1 R\u1ebb \u2192<\/a><\/div>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Cau-Hoi-Thuong-Gap-ve-Hypervisor\"><\/span>C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p v\u1ec1 Hypervisor<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Hypervisor-va-container-Docker-khac-nhau-nhu-the-nao\"><\/span>Hypervisor v\u00e0 container (Docker) kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Hypervisor \u1ea3o h\u00f3a \u1edf c\u1ea5p ph\u1ea7n c\u1ee9ng \u2014 m\u1ed7i VM c\u00f3 kernel OS ri\u00eang, t\u00e1ch bi\u1ec7t ho\u00e0n to\u00e0n. Container (Docker, LXC) \u1ea3o h\u00f3a \u1edf c\u1ea5p OS \u2014 c\u00e1c container d\u00f9ng chung kernel v\u1edbi host. Isolation c\u1ee7a hypervisor m\u1ea1nh h\u01a1n: VM A b\u1ecb compromise kh\u00f4ng \u1ea3nh h\u01b0\u1edfng VM B v\u00ec ch\u00fang kh\u00f4ng d\u00f9ng chung kernel. Container ng\u01b0\u1ee3c l\u1ea1i: nh\u1eb9 h\u01a1n, kh\u1edfi \u0111\u1ed9ng trong v\u00e0i gi\u00e2y thay v\u00ec v\u00e0i ph\u00fat, nh\u01b0ng \u00edt c\u00f4 l\u1eadp h\u01a1n.<\/p>\n<p>Ch\u1ecdn c\u00e1i n\u00e0o? Workload c\u1ea7n c\u00f4 l\u1eadp ho\u00e0n to\u00e0n, multi-tenant, security-sensitive \u2192 hypervisor. Microservices, CI\/CD, \u1ee9ng d\u1ee5ng c\u1ea7n scale nhanh \u2192 container. Trong th\u1ef1c t\u1ebf nhi\u1ec1u h\u1ec7 th\u1ed1ng ch\u1ea1y container <em>b\u00ean trong<\/em> VM \u0111\u1ec3 l\u1ea5y c\u1ea3 hai l\u1ee3i th\u1ebf \u2014 \u0111\u00e2y l\u00e0 ki\u1ebfn tr\u00fac ph\u1ed5 bi\u1ebfn trong cloud hi\u1ec7n \u0111\u1ea1i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Mot-server-vat-ly-co-the-chay-duoc-bao-nhieu-VM\"><\/span>M\u1ed9t server v\u1eadt l\u00fd c\u00f3 th\u1ec3 ch\u1ea1y \u0111\u01b0\u1ee3c bao nhi\u00eau VM?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng c\u00f3 con s\u1ed1 tuy\u1ec7t \u0111\u1ed1i \u2014 ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o RAM, s\u1ed1 CPU cores, v\u00e0 workload t\u1eebng VM. V\u00ed d\u1ee5 th\u1ef1c t\u1ebf: server 256GB RAM c\u00f3 th\u1ec3 ch\u1ea1y 50\u2013200 VM nh\u1ecf (1\u20132GB RAM m\u1ed7i c\u00e1i) n\u1ebfu workload nh\u1eb9, ho\u1eb7c ch\u1ec9 10\u201320 VM database n\u1eb7ng c\u00f9ng l\u00fac.<\/p>\n<p>Hypervisor cho ph\u00e9p over-provisioning \u2014 c\u1ea5p ph\u00e1t nhi\u1ec1u h\u01a1n t\u00e0i nguy\u00ean th\u1eadt tr\u00ean l\u00fd thuy\u1ebft. Nh\u00e0 cung c\u1ea5p VPS uy t\u00edn kh\u00f4ng l\u00e0m v\u1eady, ho\u1eb7c \u00edt nh\u1ea5t c\u00f4ng b\u1ed1 r\u00f5 t\u1ef7 l\u1ec7. N\u1ebfu kh\u00f4ng th\u1ea5y th\u00f4ng tin v\u1ec1 oversell ratio v\u00e0 nh\u00e0 cung c\u1ea5p kh\u00f4ng tr\u1ea3 l\u1eddi khi h\u1ecfi, \u0111\u00f3 l\u00e0 c\u00e2u h\u1ecfi \u0111\u00e1ng \u0111\u1eb7t ra tr\u01b0\u1edbc khi \u0111\u0103ng k\u00fd.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hypervisor-co-an-toan-khong-VM-breakout-la-gi\"><\/span>Hypervisor c\u00f3 an to\u00e0n kh\u00f4ng? VM breakout l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>VM breakout (hay VM escape) l\u00e0 l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt cho ph\u00e9p code trong m\u1ed9t VM tho\u00e1t ra v\u00e0 truy c\u1eadp hypervisor ho\u1eb7c c\u00e1c VM kh\u00e1c tr\u00ean c\u00f9ng host. V\u1ec1 l\u00fd thuy\u1ebft nguy hi\u1ec3m, nh\u01b0ng th\u1ef1c t\u1ebf r\u1ea5t hi\u1ebfm x\u1ea3y ra v\u1edbi Type 1 hypervisor hi\u1ec7n \u0111\u1ea1i. CVE database ghi nh\u1eadn l\u1ed7 h\u1ed5ng VM escape tr\u00ean KVM v\u00e0 VMware ESXi, nh\u01b0ng ch\u00fang \u0111\u01b0\u1ee3c v\u00e1 nhanh \u2014 th\u01b0\u1eddng trong v\u00e0i tu\u1ea7n sau khi c\u00f4ng b\u1ed1.<\/p>\n<p>Type 1 hypervisor c\u00f3 attack surface nh\u1ecf h\u01a1n Type 2 v\u00ec kh\u00f4ng c\u00f3 host OS \u1edf gi\u1eefa. Nh\u00e0 cung c\u1ea5p VPS nghi\u00eam t\u00fac c\u1eadp nh\u1eadt hypervisor th\u01b0\u1eddng xuy\u00ean \u2014 \u0111\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng t\u00edn hi\u1ec7u \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 tin c\u1eady \u0111\u00e1ng ch\u00fa \u00fd khi ch\u1ecdn provider.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"OpenVZ-co-phai-la-hypervisor-khong\"><\/span>OpenVZ c\u00f3 ph\u1ea3i l\u00e0 hypervisor kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>OpenVZ kh\u00f4ng ph\u1ea3i hypervisor \u2014 \u0111\u00f3 l\u00e0 container-based virtualization, d\u00f9ng chung Linux kernel v\u1edbi host. Kh\u00f4ng c\u00f3 c\u00f4 l\u1eadp \u1edf c\u1ea5p hardware nh\u01b0 KVM. H\u1ec7 qu\u1ea3 th\u1ef1c t\u1ebf: VPS OpenVZ kh\u00f4ng cho ph\u00e9p load kernel module t\u00f9y ch\u1ec9nh, kh\u00f4ng th\u1ec3 ch\u1ea1y Docker b\u00ean trong \u1edf nhi\u1ec1u c\u1ea5u h\u00ecnh, v\u00e0 t\u00e0i nguy\u00ean \u00edt \u0111\u01b0\u1ee3c c\u00f4 l\u1eadp h\u01a1n.<\/p>\n<p>VPS KVM cho ph\u00e9p root access \u0111\u1ea7y \u0111\u1ee7, load kernel t\u00f9y ch\u1ec9nh, ch\u1ea1y b\u1ea5t k\u1ef3 OS n\u00e0o. N\u1ebfu b\u1ea1n c\u1ea7n full root access ho\u1eb7c workload \u0111\u00f2i h\u1ecfi c\u00f4 l\u1eadp t\u00e0i nguy\u00ean nghi\u00eam ng\u1eb7t \u2014 KVM l\u00e0 l\u1ef1a ch\u1ecdn \u0111\u00fang. Trong n\u0103m 2025, kh\u00f4ng c\u00f3 l\u00fd do k\u1ef9 thu\u1eadt n\u00e0o \u0111\u1ec3 ch\u1ecdn OpenVZ n\u1ebfu b\u1ea1n c\u00f3 l\u1ef1a ch\u1ecdn kh\u00e1c. Tham kh\u1ea3o th\u00eam b\u00e0i <a href=\"https:\/\/interdata.vn\/blog\/openvz-va-kvm\/\" target=\"_blank\" rel=\"noopener\">so s\u00e1nh OpenVZ v\u00e0 KVM chi ti\u1ebft<\/a> n\u1ebfu b\u1ea1n c\u1ea7n ph\u00e2n t\u00edch s\u00e2u h\u01a1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lam-sao-biet-nha-cung-cap-VPS-dang-dung-hypervisor-gi\"><\/span>L\u00e0m sao bi\u1ebft nh\u00e0 cung c\u1ea5p VPS \u0111ang d\u00f9ng hypervisor g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ba c\u00e1ch ki\u1ec3m tra, t\u1eeb d\u1ec5 \u0111\u1ebfn ch\u1eafc ch\u1eafn.<\/p>\n<ol>\n<li>xem trang t\u00ednh n\u0103ng ho\u1eb7c spec c\u1ee7a nh\u00e0 cung c\u1ea5p \u2014 provider uy t\u00edn s\u1ebd ghi r\u00f5 &#8220;KVM hypervisor&#8221; ho\u1eb7c &#8220;VMware ESXi&#8221;.<\/li>\n<li>sau khi c\u00f3 quy\u1ec1n truy c\u1eadp VPS, ch\u1ea1y l\u1ec7nh <code>systemd-detect-virt<\/code> ho\u1eb7c <code>sudo virt-what<\/code> \u2014 output tr\u1ea3 v\u1ec1 ngay l\u1eadp t\u1ee9c lo\u1ea1i hypervisor \u0111ang ch\u1ea1y.<\/li>\n<li>n\u1ebfu nh\u00e0 cung c\u1ea5p kh\u00f4ng c\u00f4ng b\u1ed1 v\u00e0 kh\u00f4ng tr\u1ea3 l\u1eddi khi h\u1ecfi tr\u1ef1c ti\u1ebfp, \u0111\u00f3 l\u00e0 t\u00edn hi\u1ec7u \u0111\u00e1ng lo ng\u1ea1i \u2014 th\u00f4ng tin n\u00e0y kh\u00f4ng c\u00f3 l\u00fd do g\u00ec \u0111\u1ec3 gi\u1ea5u n\u1ebfu h\u1ea1 t\u1ea7ng th\u1eadt s\u1ef1 t\u1ed1t.<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Khi-Chon-VPS-Kiem-Tra-Hypervisor-Truoc-Khi-Ky-Hop-Dong\"><\/span>Khi Ch\u1ecdn VPS: Ki\u1ec3m Tra Hypervisor Tr\u01b0\u1edbc Khi K\u00fd H\u1ee3p \u0110\u1ed3ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Sau t\u1ea5t c\u1ea3 nh\u1eefng g\u00ec \u0111\u00e3 \u0111\u1ecdc, nguy\u00ean t\u1eafc th\u1ef1c h\u00e0nh ng\u1eafn g\u1ecdn: \u01b0u ti\u00ean VPS ch\u1ea1y KVM ho\u1eb7c Type 1 hypervisor kh\u00e1c. Tr\u00e1nh OpenVZ hay container-based n\u1ebfu b\u1ea1n c\u1ea7n root access \u0111\u1ea7y \u0111\u1ee7, workload \u0111\u00f2i h\u1ecfi isolation t\u00e0i nguy\u00ean, ho\u1eb7c c\u1ea7n ch\u1ea1y Docker b\u00ean trong.<\/p>\n<p>Nh\u00e0 cung c\u1ea5p ghi r\u00f5 lo\u1ea1i hypervisor l\u00e0 nh\u00e0 cung c\u1ea5p t\u1ef1 tin v\u00e0o h\u1ea1 t\u1ea7ng c\u1ee7a h\u1ecd. Spec ghi &#8220;KVM hypervisor, Type 1 bare-metal&#8221; cho b\u1ea1n bi\u1ebft ch\u00ednh x\u00e1c b\u1ea1n \u0111ang mua g\u00ec. Spec ch\u1ec9 ghi &#8220;VPS Linux&#8221; m\u00e0 kh\u00f4ng \u0111\u1ec1 c\u1eadp hypervisor \u2014 h\u1ecfi th\u1eb3ng tr\u01b0\u1edbc khi thanh to\u00e1n.<\/p>\n<p>Hypervisor l\u00e0 m\u1ed9t m\u1eaft x\u00edch, nh\u01b0ng kh\u00f4ng ph\u1ea3i y\u1ebfu t\u1ed1 duy nh\u1ea5t. Network quality, storage type, oversell ratio, v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng support \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m th\u1ef1c t\u1ebf. B\u00e0i <a href=\"https:\/\/interdata.vn\/blog\/cach-chon-cau-hinh-vps-phu-hop\/\" target=\"_blank\" rel=\"noopener\">h\u01b0\u1edbng d\u1eabn ch\u1ecdn VPS ph\u00f9 h\u1ee3p cho t\u1eebng lo\u1ea1i nhu c\u1ea7u<\/a> \u0111i s\u00e2u h\u01a1n v\u00e0o to\u00e0n b\u1ed9 c\u00e1c ti\u00eau ch\u00ed \u0111\u00f3.<\/p>\n<p><!-- CTA BOX #2 --><\/p>\n<div style=\"background: linear-gradient(135deg, #1a3c6e 0%, #0f6cbf 100%); border-radius: 12px; padding: 28px 32px; margin: 40px 0; max-width: 100%; box-shadow: 0 4px 20px rgba(15,108,191,0.25);\">\n<div style=\"display: inline-block; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3); border-radius: 20px; padding: 4px 14px; margin-bottom: 16px;\"><span style=\"color: #ffffff; font-size: 12px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase;\">InterData<\/span><\/div>\n<h3 style=\"color: #ffffff; font-size: 22px; font-weight: bold; margin: 0 0 8px 0; line-height: 1.3;\"><span class=\"ez-toc-section\" id=\"San-Sang-Dung-Thu-Khoi-Tao-VPS-Ngay-Sau-Thanh-Toan\"><\/span>S\u1eb5n S\u00e0ng D\u00f9ng Th\u1eed? Kh\u1edfi T\u1ea1o VPS Ngay Sau Thanh To\u00e1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"color: rgba(255,255,255,0.85); font-size: 15px; margin: 0 0 20px 0; line-height: 1.6;\">H\u1ec7 th\u1ed1ng m\u00e1y ch\u1ee7 \u1ea3o t\u1ea1i InterData ch\u1ea1y tr\u00ean KVM hypervisor \u2014 t\u00e0i nguy\u00ean ri\u00eang bi\u1ec7t, kh\u00f4ng oversell, datacenter H\u00e0 N\u1ed9i v\u00e0 TP.HCM \u0111\u1ea1t chu\u1ea9n qu\u1ed1c t\u1ebf. Ho\u00e0n ti\u1ec1n 30 ng\u00e0y n\u1ebfu kh\u00f4ng \u0111\u00fang ch\u1ea5t l\u01b0\u1ee3ng cam k\u1ebft.<\/p>\n<ul style=\"list-style: none; padding: 0; margin: 0 0 24px 0;\">\n<li style=\"color: rgba(255,255,255,0.9); font-size: 14px; padding: 5px 0; display: flex; align-items: flex-start;\"><span style=\"color: #4fc3f7; font-size: 16px; margin-right: 8px; flex-shrink: 0;\">\u2713<\/span>Kh\u1edfi t\u1ea1o t\u1ef1 \u0111\u1ed9ng ngay sau thanh to\u00e1n<\/li>\n<li style=\"color: rgba(255,255,255,0.9); font-size: 14px; padding: 5px 0; display: flex; align-items: flex-start;\"><span style=\"color: #4fc3f7; font-size: 16px; margin-right: 8px; flex-shrink: 0;\">\u2713<\/span>Datacenter H\u00e0 N\u1ed9i &amp; TP.HCM, chu\u1ea9n qu\u1ed1c t\u1ebf<\/li>\n<li style=\"color: rgba(255,255,255,0.9); font-size: 14px; padding: 5px 0; display: flex; align-items: flex-start;\"><span style=\"color: #4fc3f7; font-size: 16px; margin-right: 8px; flex-shrink: 0;\">\u2713<\/span>D\u00f9ng th\u1eed 07 ng\u00e0y &#8211; Tr\u1ea3i nghi\u1ec7m tr\u01b0\u1edbc, ngon t\u00ednh sau<\/li>\n<li style=\"color: rgba(255,255,255,0.9); font-size: 14px; padding: 5px 0; display: flex; align-items: flex-start;\"><span style=\"color: #4fc3f7; font-size: 16px; margin-right: 8px; flex-shrink: 0;\">\u2713<\/span>Ho\u00e0n ti\u1ec1n 30 ng\u00e0y n\u1ebfu kh\u00f4ng \u0111\u00fang ch\u1ea5t l\u01b0\u1ee3ng cam k\u1ebft<\/li>\n<\/ul>\n<div style=\"display: flex; gap: 12px; flex-wrap: wrap;\"><a style=\"display: inline-block; background: #ffffff; color: #1a3c6e; font-size: 15px; font-weight: bold; text-decoration: none; padding: 12px 28px; border-radius: 8px;\" href=\"https:\/\/www.facebook.com\/interdata.com.vn\" target=\"_blank\" rel=\"nofollow noopener\">Li\u00ean h\u1ec7 ngay \u2192<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>T\u00f3m t\u1eaft nhanh: Hypervisor (Virtual Machine Monitor \u2014 VMM) l\u00e0 ph\u1ea7n m\u1ec1m ho\u1eb7c firmware n\u1eb1m gi\u1eefa ph\u1ea7n c\u1ee9ng server v\u00e0 c\u00e1c m\u00e1y \u1ea3o, ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o ra, ph\u00e2n b\u1ed5 v\u00e0 qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean CPU, RAM, storage cho t\u1eebng VM \u0111\u1ed9c l\u1eadp. M\u1ed7i VM ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t server ho\u00e0n to\u00e0n t\u00e1ch bi\u1ec7t d\u00f9<\/p>\n","protected":false},"author":2,"featured_media":40626,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49,48],"tags":[],"class_list":["post-15274","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vps","category-cloud-server"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/15274","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=15274"}],"version-history":[{"count":8,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/15274\/revisions"}],"predecessor-version":[{"id":40629,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/15274\/revisions\/40629"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/40626"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=15274"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=15274"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=15274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}