{"id":15937,"date":"2025-09-13T10:02:13","date_gmt":"2025-09-13T03:02:13","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=15937"},"modified":"2025-09-24T10:15:19","modified_gmt":"2025-09-24T03:15:19","slug":"raid-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/raid-la-gi\/","title":{"rendered":"RAID l\u00e0 g\u00ec? C\u00e1c lo\u1ea1i RAID, \u01afu\/Nh\u01b0\u1ee3c \u0111i\u1ec3m, \u1ee8ng d\u1ee5ng v\u00e0 C\u00e1ch ch\u1ecdn"},"content":{"rendered":"<p>RAID (Redundant <a href=\"https:\/\/interdata.vn\/blog\/array-la-gi\/\">Array<\/a> of Independent Disks) l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 l\u01b0u tr\u1eef d\u1eef li\u1ec7u cho ph\u00e9p g\u1ed9p nhi\u1ec1u \u1ed5 c\u1ee9ng v\u1eadt l\u00fd th\u00e0nh m\u1ed9t ho\u1eb7c nhi\u1ec1u \u1ed5 c\u1ee9ng logic, v\u1edbi m\u1ee5c \u0111\u00edch t\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n d\u1eef li\u1ec7u. B\u00e0i vi\u1ebft n\u00e0y c\u1ee7a InterData s\u1ebd \u0111i s\u00e2u v\u00e0o t\u00ecm hi\u1ec3u <strong><a href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/\">RAID l\u00e0 g\u00ec<\/a><\/strong>, c\u00e1c lo\u1ea1i RAID ph\u1ed5 bi\u1ebfn nh\u01b0 RAID 1, RAID 0, RAID 6, RAID 10, JBOD, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 nh\u1eefng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a RAID \u0111\u1ec3 gi\u00fap b\u1ea1n \u0111\u01b0a ra l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 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\/raid-la-gi\/#RAID-la-gi\" >RAID 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\/raid-la-gi\/#Su-dung-RAID-de-lam-gi\" >S\u1eed d\u1ee5ng RAID \u0111\u1ec3 l\u00e0m g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/#RAID-hoat-dong-nhu-the-nao\" >RAID ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/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\/raid-la-gi\/#Cac-loai-RAID-co-ban\" >C\u00e1c lo\u1ea1i RAID 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-5\" href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/#RAID-0-Striping\" >RAID 0 (Striping)<\/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\/raid-la-gi\/#RAID-1-Mirroring\" >RAID 1 (Mirroring)<\/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\/raid-la-gi\/#RAID-5-Stripping-with-Parity\" >RAID 5 (Stripping with Parity)<\/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\/raid-la-gi\/#RAID-6-Stripping-with-Dual-Parity\" >RAID 6 (Stripping with Dual Parity)<\/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\/raid-la-gi\/#RAID-10-RAID-10-Stripping-a-Mirrored-Set\" >RAID 10 (RAID 1+0) (Stripping a Mirrored Set)<\/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\/raid-la-gi\/#JBOD-Just-a-Bunch-Of-Disks\" >JBOD (Just a Bunch Of Disks)<\/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\/raid-la-gi\/#Uu-va-nhuoc-diem-cua-khi-su-dung-RAID\" >\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a khi s\u1eed d\u1ee5ng RAID<\/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\/raid-la-gi\/#Uu-diem-cua-RAID\" >\u01afu \u0111i\u1ec3m c\u1ee7a RAID<\/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\/raid-la-gi\/#Nhuoc-diem-cua-RAID\" >Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a RAID<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/#RAID-co-the-thay-the-cho-back-up-duoc-khong\" >RAID c\u00f3 th\u1ec3 thay th\u1ebf cho back-up \u0111\u01b0\u1ee3c kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/#So-sanh-RAID-0-va-RAID-1\" >So s\u00e1nh RAID 0 v\u00e0 RAID 1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/#Nen-dung-RAID-5-hay-RAID-10\" >N\u00ean d\u00f9ng RAID 5 hay RAID 10?<\/a><\/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\/raid-la-gi\/#Ung-dung-cua-RAID-trong-server\" >\u1ee8ng d\u1ee5ng c\u1ee7a RAID trong server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/#Khi-nao-can-su-dung-RAID\" >Khi n\u00e0o c\u1ea7n s\u1eed d\u1ee5ng RAID?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/#Cach-chon-cau-hinh-RAID-toi-uu-theo-nhu-cau\" >C\u00e1ch ch\u1ecdn c\u1ea5u h\u00ecnh RAID t\u1ed1i \u01b0u theo nhu c\u1ea7u<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/#2-o-cung-1TB\" >2 \u1ed5 c\u1ee9ng 1TB<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/raid-la-gi\/#3-o-cung-1TB\" >3 \u1ed5 c\u1ee9ng 1TB<\/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\/raid-la-gi\/#4-o-cung-1TB\" >4 \u1ed5 c\u1ee9ng 1TB<\/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\/raid-la-gi\/#5-hoac-6-o-cung-1TB\" >5 ho\u1eb7c 6 \u1ed5 c\u1ee9ng 1TB<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"RAID-la-gi\"><\/span>RAID l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>RAID, vi\u1ebft t\u1eaft c\u1ee7a Redundant Array of Independent Disks<\/strong>, l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt s\u1eafp x\u1ebfp nhi\u1ec1u \u1ed5 c\u1ee9ng v\u1eadt l\u00fd th\u00e0nh m\u1ed9t \u0111\u01a1n v\u1ecb logic duy nh\u1ea5t. M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c n\u00e0y l\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t \u0111\u1ecdc\/ghi d\u1eef li\u1ec7u, t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i ho\u1eb7c c\u1ea3 hai. Thay v\u00ec s\u1eed d\u1ee5ng m\u1ed9t \u1ed5 \u0111\u0129a \u0111\u01a1n, RAID ph\u00e2n chia ho\u1eb7c sao ch\u00e9p d\u1eef li\u1ec7u tr\u00ean nhi\u1ec1u \u1ed5 \u0111\u0129a, gi\u00fap h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 tin c\u1eady h\u01a1n.<\/p>\n<figure id=\"attachment_15938\" aria-describedby=\"caption-attachment-15938\" style=\"width: 837px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15938\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/RAID-la-gi.jpg\" alt=\"RAID l\u00e0 g\u00ec?\" width=\"837\" height=\"510\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/RAID-la-gi.jpg 837w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/RAID-la-gi-300x183.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/RAID-la-gi-768x468.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/RAID-la-gi-750x457.jpg 750w\" sizes=\"auto, (max-width: 837px) 100vw, 837px\" \/><figcaption id=\"caption-attachment-15938\" class=\"wp-caption-text\">RAID l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Su-dung-RAID-de-lam-gi\"><\/span>S\u1eed d\u1ee5ng RAID \u0111\u1ec3 l\u00e0m g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng m\u1ea3ng \u0111\u0129a \u0111\u1ed9c l\u1eadp d\u1ef1 ph\u00f2ng (RAID) l\u00e0 g\u00ec? C\u00f4ng ngh\u1ec7 RAID \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu \u0111\u1ec3 gi\u1ea3i quy\u1ebft hai v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng trong l\u01b0u tr\u1eef: hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>\n<ul>\n<li><strong>T\u0103ng Hi\u1ec7u su\u1ea5t (Performance):<\/strong> B\u1eb1ng c\u00e1ch ph\u00e2n chia d\u1eef li\u1ec7u l\u00ean nhi\u1ec1u \u1ed5 \u0111\u0129a, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u0111\u1ecdc v\u00e0 ghi \u0111\u1ed3ng th\u1eddi, gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian truy c\u1eadp. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n t\u1ed1c \u0111\u1ed9 cao nh\u01b0 ch\u1ec9nh s\u1eeda video, c\u01a1 s\u1edf <a href=\"https:\/\/interdata.vn\/blog\/big-data-la-gi\/\">d\u1eef li\u1ec7u l\u1edbn<\/a> hay <a href=\"https:\/\/interdata.vn\/blog\/web-server\/\">m\u00e1y ch\u1ee7 web<\/a>.<\/li>\n<li><strong>T\u0103ng Kh\u1ea3 n\u0103ng Ch\u1ecbu l\u1ed7i (Fault Tolerance):<\/strong> RAID c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c b\u1ea3n sao l\u01b0u (mirroring) ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c bit ki\u1ec3m tra l\u1ed7i (parity) \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u. Khi m\u1ed9t \u1ed5 \u0111\u0129a g\u1eb7p s\u1ef1 c\u1ed1, d\u1eef li\u1ec7u v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u1ee5c h\u1ed3i t\u1eeb c\u00e1c \u1ed5 \u0111\u0129a c\u00f2n l\u1ea1i, \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/li>\n<li><strong>M\u1edf r\u1ed9ng Dung l\u01b0\u1ee3ng L\u01b0u tr\u1eef:<\/strong> RAID cho ph\u00e9p b\u1ea1n g\u1ed9p nhi\u1ec1u \u1ed5 c\u1ee9ng nh\u1ecf th\u00e0nh m\u1ed9t kho l\u01b0u tr\u1eef l\u1edbn h\u01a1n, d\u1ec5 d\u00e0ng qu\u1ea3n l\u00fd h\u01a1n.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"RAID-hoat-dong-nhu-the-nao\"><\/span>RAID ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>RAID k\u1ebft h\u1ee3p nhi\u1ec1u \u1ed5 \u0111\u0129a v\u1eadt l\u00fd th\u00e0nh m\u1ed9t th\u1ef1c th\u1ec3 logic duy nh\u1ea5t<\/strong> th\u00f4ng qua ph\u1ea7n c\u1ee9ng ho\u1eb7c ph\u1ea7n m\u1ec1m chuy\u00ean d\u1ee5ng. RAID ph\u1ea7n c\u1ee9ng c\u00f3 nhi\u1ec1u phi\u00ean b\u1ea3n kh\u00e1c nhau. M\u1ed9t s\u1ed1 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n tr\u00ean <a href=\"https:\/\/interdata.vn\/blog\/mainboard-server-la-gi\/\">bo m\u1ea1ch ch\u1ee7<\/a>, trong khi m\u1ed9t s\u1ed1 kh\u00e1c t\u1ed3n t\u1ea1i d\u01b0\u1edbi d\u1ea1ng c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/may-chu-server-la-gi\/\">m\u00e1y ch\u1ee7<\/a> l\u01b0u tr\u1eef m\u1ea1ng (NAS) ho\u1eb7c m\u00e1y ch\u1ee7 m\u1ea1ng l\u01b0u tr\u1eef chuy\u00ean d\u1ee5ng (<a href=\"https:\/\/interdata.vn\/blog\/san-storage-area-network-la-gi\/\">SAN<\/a>) \u1edf c\u1ea5p \u0111\u1ed9 doanh nghi\u1ec7p.<\/p>\n<p>RAID th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai tr\u00ean m\u00e1y ch\u1ee7, nh\u01b0ng c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean m\u00e1y tr\u1ea1m. Vi\u1ec7c \u00e1p d\u1ee5ng RAID tr\u00ean m\u00e1y tr\u1ea1m th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong nh\u1eefng \u1ee9ng d\u1ee5ng m\u00e1y t\u00ednh \u0111\u00f2i h\u1ecfi dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef l\u1edbn v\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u cao.<\/p>\n<p>RAID ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ph\u00e2n b\u1ed5 d\u1eef li\u1ec7u l\u00ean nhi\u1ec1u \u1ed5 \u0111\u0129a, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p c\u00e1c ho\u1ea1t \u0111\u1ed9ng nh\u1eadp\/xu\u1ea5t (I\/O) ch\u1ed3ng l\u1ea5n l\u00ean nhau theo m\u1ed9t c\u00e1ch th\u1ee9c ti\u00eau chu\u1ea9n h\u00f3a. K\u1ebft qu\u1ea3 mang l\u1ea1i l\u00e0 hi\u1ec7u n\u0103ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n. V\u00ec nhi\u1ec1u \u1ed5 \u0111\u0129a gi\u00fap k\u00e9o d\u00e0i th\u1eddi gian trung b\u00ecnh gi\u1eefa c\u00e1c l\u1ea7n h\u1ecfng h\u00f3c, vi\u1ec7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u d\u1ef1 ph\u00f2ng c\u0169ng gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i.<\/p>\n<p>Th\u00f4ng th\u01b0\u1eddng, c\u00e1c m\u1ea3ng RAID s\u1ebd \u0111\u01b0\u1ee3c <a href=\"https:\/\/interdata.vn\/blog\/he-dieu-hanh\/\">h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/a> nh\u1eadn di\u1ec7n nh\u01b0 m\u1ed9t \u1ed5 \u0111\u0129a logic duy nh\u1ea5t v\u00e0 s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt \u0111\u1eb7c bi\u1ec7t nh\u01b0 disk mirroring (sao ch\u00e9p \u1ed5 \u0111\u0129a) v\u00e0 disk striping (ph\u00e2n d\u1ea3i d\u1eef li\u1ec7u).<\/p>\n<p>Disk mirroring s\u1ebd sao ch\u00e9p d\u1eef li\u1ec7u gi\u1ed1ng h\u1ec7t nhau sang nhi\u1ec1u \u1ed5 \u0111\u0129a, trong khi disk striping th\u00ec chia nh\u1ecf d\u1eef li\u1ec7u ra. Khi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1ch, striping gi\u00fap ph\u00e2n b\u1ed1 d\u1eef li\u1ec7u tr\u00ean nhi\u1ec1u \u1ed5 \u0111\u0129a kh\u00e1c nhau. Kh\u00f4ng gian l\u01b0u tr\u1eef c\u1ee7a m\u1ed7i \u1ed5 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c \u0111\u01a1n v\u1ecb c\u00f3 <strong>k\u00edch th\u01b0\u1edbc t\u1eeb 512 byte \u0111\u1ebfn v\u00e0i megabyte<\/strong>.<\/p>\n<p>Sau \u0111\u00f3, c\u00e1c d\u1ea3i d\u1eef li\u1ec7u (stripes) tr\u00ean to\u00e0n b\u1ed9 \u1ed5 \u0111\u0129a s\u1ebd \u0111\u01b0\u1ee3c xen k\u1ebd v\u00e0 s\u1eafp x\u1ebfp. Trong m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01a1n ng\u01b0\u1eddi d\u00f9ng, n\u01a1i l\u01b0u tr\u1eef c\u00e1c b\u1ea3n ghi chung, c\u00e1c d\u1ea3i d\u1eef li\u1ec7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp nh\u1ecf, \u0111\u1ec3 m\u1ed9t b\u1ea3n ghi duy nh\u1ea5t c\u00f3 th\u1ec3 tr\u1ea3i d\u00e0i tr\u00ean to\u00e0n b\u1ed9 \u1ed5 \u0111\u0129a v\u00e0 \u0111\u01b0\u1ee3c truy c\u1eadp li\u1ec1n m\u1ea1ch ch\u1ec9 b\u1eb1ng m\u1ed9t l\u1ea7n \u0111\u1ecdc to\u00e0n b\u1ed9 \u1ed5.<\/p>\n<p>Trong khi \u0111\u00f3, h\u1ec7 th\u1ed1ng \u0111a ng\u01b0\u1eddi d\u00f9ng l\u1ea1i c\u00f3 c\u00e1ch ti\u1ebfp c\u1eadn kh\u00e1c. \u0110\u1ec3 \u0111\u1ea1t hi\u1ec7u n\u0103ng t\u1ed1t h\u01a1n, c\u00e1c d\u1ea3i d\u1eef li\u1ec7u ph\u1ea3i l\u1edbn h\u01a1n, \u0111\u1ee7 \u0111\u1ec3 ch\u1ee9a c\u00e1c b\u1ea3n ghi c\u00f3 k\u00edch th\u01b0\u1edbc t\u1ed1i \u0111a. Nh\u1edd v\u1eady, RAID c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c nh\u1eadp\/xu\u1ea5t ch\u1ed3ng l\u1ea5n tr\u00ean nhi\u1ec1u \u1ed5 \u0111\u0129a c\u00f9ng l\u00fac.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-loai-RAID-co-ban\"><\/span>C\u00e1c lo\u1ea1i RAID c\u01a1 b\u1ea3n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1ed7i c\u1ea5p \u0111\u1ed9 RAID c\u00f3 m\u1ed9t c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng ri\u00eang bi\u1ec7t, ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng nhu c\u1ea7u s\u1eed d\u1ee5ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ph\u00e2n t\u00edch chi ti\u1ebft c\u00e1c lo\u1ea1i RAID ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"RAID-0-Striping\"><\/span>RAID 0 (Striping)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>C\u00e1ch ho\u1ea1t \u0111\u1ed9ng:<\/strong> D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c kh\u1ed1i nh\u1ecf v\u00e0 ghi l\u1ea7n l\u01b0\u1ee3t tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c \u1ed5 \u0111\u0129a trong m\u1ea3ng.<\/li>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> T\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi d\u1eef li\u1ec7u cao nh\u1ea5t v\u00ec nhi\u1ec1u \u1ed5 \u0111\u0129a c\u00f9ng l\u00e0m vi\u1ec7c song song.<\/li>\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> <strong>Kh\u00f4ng c\u00f3 t\u00ednh n\u0103ng d\u1ef1 ph\u00f2ng<\/strong>. N\u1ebfu ch\u1ec9 m\u1ed9t \u1ed5 \u0111\u0129a b\u1ecb h\u1ecfng, to\u00e0n b\u1ed9 d\u1eef li\u1ec7u tr\u00ean m\u1ea3ng RAID 0 s\u1ebd b\u1ecb m\u1ea5t.<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng:<\/strong> Ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n hi\u1ec7u su\u1ea5t cao nh\u01b0ng kh\u00f4ng quan tr\u1ecdng v\u1ec1 \u0111\u1ed9 an to\u00e0n d\u1eef li\u1ec7u, v\u00ed d\u1ee5 nh\u01b0 ch\u1ec9nh s\u1eeda video ho\u1eb7c render \u0111\u1ed3 h\u1ecda.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"RAID-1-Mirroring\"><\/span>RAID 1 (Mirroring)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>C\u00e1ch ho\u1ea1t \u0111\u1ed9ng:<\/strong> D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c sao ch\u00e9p ho\u00e0n to\u00e0n t\u1eeb \u1ed5 \u0111\u0129a n\u00e0y sang m\u1ed9t ho\u1eb7c nhi\u1ec1u \u1ed5 \u0111\u0129a kh\u00e1c. N\u1ebfu c\u00f3 2 \u1ed5 \u0111\u0129a 1TB, b\u1ea1n ch\u1ec9 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c 1TB dung l\u01b0\u1ee3ng.<\/li>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> Kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u c\u1ef1c k\u1ef3 t\u1ed1t. N\u1ebfu m\u1ed9t \u1ed5 \u0111\u0129a h\u1ecfng, \u1ed5 \u0111\u0129a c\u00f2n l\u1ea1i v\u1eabn ch\u1ee9a \u0111\u1ea7y \u0111\u1ee7 d\u1eef li\u1ec7u.<\/li>\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> Dung l\u01b0\u1ee3ng s\u1eed d\u1ee5ng ch\u1ec9 b\u1eb1ng m\u1ed9t n\u1eeda t\u1ed5ng dung l\u01b0\u1ee3ng. Hi\u1ec7u su\u1ea5t ghi c\u00f3 th\u1ec3 th\u1ea5p h\u01a1n RAID 0.<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng:<\/strong> R\u1ea5t l\u00fd t\u01b0\u1edfng cho c\u00e1c h\u1ec7 th\u1ed1ng c\u1ea7n \u0111\u1ed9 tin c\u1eady cao nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/database-server-la-gi\/\">m\u00e1y ch\u1ee7 c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/a>, m\u00e1y ch\u1ee7 k\u1ebf to\u00e1n ho\u1eb7c l\u01b0u tr\u1eef c\u00e1c t\u1ec7p tin quan tr\u1ecdng.<\/li>\n<\/ul>\n<figure id=\"attachment_32561\" aria-describedby=\"caption-attachment-32561\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-32561\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/11\/Cac-loai-RAID-co-ban.jpg\" alt=\"C\u00e1c lo\u1ea1i RAID c\u01a1 b\u1ea3n\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/11\/Cac-loai-RAID-co-ban.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/11\/Cac-loai-RAID-co-ban-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/11\/Cac-loai-RAID-co-ban-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-32561\" class=\"wp-caption-text\">C\u00e1c lo\u1ea1i RAID c\u01a1 b\u1ea3n<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"RAID-5-Stripping-with-Parity\"><\/span>RAID 5 (Stripping with Parity)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>C\u00e1ch ho\u1ea1t \u0111\u1ed9ng:<\/strong> D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ph\u00e2n chia tr\u00ean nhi\u1ec1u \u1ed5 \u0111\u0129a, v\u00e0 m\u1ed9t ph\u1ea7n th\u00f4ng tin ki\u1ec3m tra l\u1ed7i (parity) c\u0169ng \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c \u1ed5 \u0111\u0129a \u0111\u00f3. M\u1ea3ng RAID 5 y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u 3 \u1ed5 \u0111\u0129a.<\/li>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> C\u00e2n b\u1eb1ng t\u1ed1t gi\u1eefa hi\u1ec7u su\u1ea5t, dung l\u01b0\u1ee3ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i. M\u1ea3ng c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ed7i c\u1ee7a m\u1ed9t \u1ed5 \u0111\u0129a b\u1ea5t k\u1ef3.<\/li>\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> Hi\u1ec7u su\u1ea5t ghi th\u1ea5p h\u01a1n RAID 0 v\u00e0 RAID 10. Qu\u00e1 tr\u00ecnh ph\u1ee5c h\u1ed3i (rebuild) khi c\u00f3 \u1ed5 \u0111\u0129a h\u1ecfng c\u00f3 th\u1ec3 t\u1ed1n nhi\u1ec1u th\u1eddi gian v\u00e0 g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng:<\/strong> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00e1y ch\u1ee7 t\u1ec7p (<a href=\"https:\/\/interdata.vn\/blog\/file-server-la-gi\/\">file server<\/a>) ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/application-server-la-gi\/\">m\u00e1y ch\u1ee7 \u1ee9ng d\u1ee5ng<\/a> nh\u1ecf.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"RAID-6-Stripping-with-Dual-Parity\"><\/span>RAID 6 (Stripping with Dual Parity)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>C\u00e1ch ho\u1ea1t \u0111\u1ed9ng:<\/strong> T\u01b0\u01a1ng t\u1ef1 nh\u01b0 RAID 5, nh\u01b0ng s\u1eed d\u1ee5ng hai kh\u1ed1i parity. M\u1ea3ng n\u00e0y y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u 4 \u1ed5 \u0111\u0129a.<\/li>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> Kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i cao h\u01a1n RAID 5, c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ed7i c\u1ee7a hai \u1ed5 \u0111\u0129a c\u00f9ng m\u1ed9t l\u00fac.<\/li>\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> Hi\u1ec7u su\u1ea5t ghi th\u1ea5p h\u01a1n RAID 5. Chi ph\u00ed cao h\u01a1n do c\u1ea7n th\u00eam \u1ed5 \u0111\u0129a.<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng:<\/strong> Ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng c\u1ea7n \u0111\u1ed9 tin c\u1eady c\u1ef1c cao, n\u01a1i vi\u1ec7c m\u1ea5t d\u1eef li\u1ec7u l\u00e0 kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c, v\u00ed d\u1ee5 nh\u01b0 m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef l\u1edbn ho\u1eb7c h\u1ec7 th\u1ed1ng camera an ninh.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"RAID-10-RAID-10-Stripping-a-Mirrored-Set\"><\/span>RAID 10 (RAID 1+0) (Stripping a Mirrored Set)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>C\u00e1ch ho\u1ea1t \u0111\u1ed9ng:<\/strong> K\u1ebft h\u1ee3p c\u1ea3 RAID 0 v\u00e0 RAID 1. C\u00e1c \u1ed5 \u0111\u0129a \u0111\u01b0\u1ee3c gh\u00e9p th\u00e0nh c\u00e1c c\u1eb7p RAID 1, sau \u0111\u00f3 c\u00e1c c\u1eb7p n\u00e0y \u0111\u01b0\u1ee3c g\u1ed9p l\u1ea1i th\u00e0nh m\u1ed9t m\u1ea3ng RAID 0. Y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u 4 \u1ed5 \u0111\u0129a.<\/li>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> Hi\u1ec7u su\u1ea5t r\u1ea5t cao (nh\u1edd RAID 0) v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i t\u1ed1t (nh\u1edd RAID 1). M\u1ea3ng c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c l\u1ed7i c\u1ee7a nhi\u1ec1u \u1ed5 \u0111\u0129a mi\u1ec5n l\u00e0 ch\u00fang kh\u00f4ng n\u1eb1m trong c\u00f9ng m\u1ed9t c\u1eb7p RAID 1.<\/li>\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> Dung l\u01b0\u1ee3ng kh\u1ea3 d\u1ee5ng ch\u1ec9 b\u1eb1ng m\u1ed9t n\u1eeda t\u1ed5ng dung l\u01b0\u1ee3ng. Chi ph\u00ed cao.<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng:<\/strong> L\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi c\u1ea3 hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady t\u1ed1i \u0111a, nh\u01b0 m\u00e1y ch\u1ee7 \u1ea3o h\u00f3a (<a href=\"https:\/\/interdata.vn\/blog\/ao-hoa-la-gi\/\">virtualization<\/a>) hay c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch tr\u1ef1c tuy\u1ebfn.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"JBOD-Just-a-Bunch-Of-Disks\"><\/span>JBOD (Just a Bunch Of Disks)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>C\u00e1ch ho\u1ea1t \u0111\u1ed9ng:<\/strong> Th\u1ef1c ch\u1ea5t JBOD kh\u00f4ng ph\u1ea3i l\u00e0 RAID. N\u00f3 ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 g\u1ed9p c\u00e1c \u1ed5 \u0111\u0129a th\u00e0nh m\u1ed9t \u1ed5 \u0111\u0129a logic l\u1edbn h\u01a1n. D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ghi tu\u1ea7n t\u1ef1 t\u1eeb \u1ed5 \u0111\u0129a n\u00e0y sang \u1ed5 \u0111\u0129a kh\u00e1c.<\/li>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> \u0110\u01a1n gi\u1ea3n, t\u1eadn d\u1ee5ng t\u1ed1i \u0111a dung l\u01b0\u1ee3ng c\u1ee7a c\u00e1c \u1ed5 \u0111\u0129a c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau.<\/li>\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> <strong>Kh\u00f4ng c\u00f3 hi\u1ec7u su\u1ea5t v\u00e0 kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i.<\/strong> N\u1ebfu m\u1ed9t \u1ed5 \u0111\u0129a h\u1ecfng, d\u1eef li\u1ec7u tr\u00ean \u1ed5 \u0111\u00f3 s\u1ebd m\u1ea5t.<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng:<\/strong> Ph\u00f9 h\u1ee3p cho vi\u1ec7c l\u01b0u tr\u1eef c\u00e1c d\u1eef li\u1ec7u \u00edt quan tr\u1ecdng, n\u01a1i m\u00e0 dung l\u01b0\u1ee3ng l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh.<\/li>\n<\/ul>\n<p><iframe loading=\"lazy\" title=\"What is a RAID Array, RAID 0, 1, 5, 10. Advantages and Disadvantages of RAID 0. 1. 5 10\" width=\"1020\" height=\"574\" src=\"https:\/\/www.youtube.com\/embed\/MZfRxjEGRj4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Uu-va-nhuoc-diem-cua-khi-su-dung-RAID\"><\/span>\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a khi s\u1eed d\u1ee5ng RAID<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a RAID (Redundant Array of Independent Disks) \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p nh\u01b0 sau:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Uu-diem-cua-RAID\"><\/span>\u01afu \u0111i\u1ec3m c\u1ee7a RAID<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>T\u0103ng hi\u1ec7u su\u1ea5t<\/strong>: RAID s\u1eed d\u1ee5ng nhi\u1ec1u \u1ed5 \u0111\u0129a c\u00f9ng l\u00fac \u0111\u1ec3 \u0111\u1ecdc\/ghi d\u1eef li\u1ec7u, gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t d\u1eef li\u1ec7u so v\u1edbi \u1ed5 \u0111\u0129a \u0111\u01a1n. V\u00ed d\u1ee5, RAID 0 gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi \u0111\u00e1ng k\u1ec3 nh\u1edd ph\u00e2n chia d\u1eef li\u1ec7u song song l\u00ean nhi\u1ec1u \u1ed5.<\/li>\n<li><strong>T\u0103ng \u0111\u1ed9 an to\u00e0n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i<\/strong>: C\u00e1c c\u1ea5p RAID nh\u01b0 RAID 1, RAID 5 c\u00f3 t\u00ednh n\u0103ng sao ch\u00e9p d\u1eef li\u1ec7u d\u1ef1 ph\u00f2ng ho\u1eb7c l\u01b0u tr\u1eef th\u00f4ng tin ki\u1ec3m tra (parity), gi\u00fap b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u khi m\u1ed9t ho\u1eb7c v\u00e0i \u1ed5 \u0111\u0129a g\u1eb7p l\u1ed7i, \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh.<\/li>\n<li><strong>C\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 chi ph\u00ed<\/strong>: RAID cho ph\u00e9p s\u1eed d\u1ee5ng nhi\u1ec1u \u1ed5 \u0111\u0129a gi\u00e1 th\u1ea5p thay v\u00ec m\u1ed9t \u1ed5 \u0111\u0129a l\u1edbn \u0111\u1eaft ti\u1ec1n, v\u1eeba t\u0103ng dung l\u01b0\u1ee3ng v\u1eeba t\u0103ng hi\u1ec7u su\u1ea5t.<\/li>\n<li><strong>Dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef l\u1edbn h\u01a1n<\/strong>: RAID cho ph\u00e9p gh\u00e9p nhi\u1ec1u \u1ed5 \u0111\u0129a \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t kh\u00f4ng gian l\u01b0u tr\u1eef l\u1edbn h\u01a1n, d\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng b\u1eb1ng c\u00e1ch th\u00eam \u1ed5 \u0111\u0129a m\u1edbi.<\/li>\n<li><strong>Ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c<\/strong>: Trong tr\u01b0\u1eddng h\u1ee3p \u1ed5 \u0111\u0129a b\u1ecb l\u1ed7i, h\u1ec7 th\u1ed1ng RAID c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c ch\u1ea1y b\u00ecnh th\u01b0\u1eddng, \u1ed5 \u0111\u0129a h\u1ecfng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thay th\u1ebf m\u00e0 kh\u00f4ng g\u00e2y gi\u00e1n \u0111o\u1ea1n (h\u1ed7 tr\u1ee3 hot <a href=\"https:\/\/interdata.vn\/blog\/swap-memory-la-gi\/\">swap<\/a>).<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Nhuoc-diem-cua-RAID\"><\/span>Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a RAID<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Chi ph\u00ed \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u v\u00e0 ph\u1ea7n c\u1ee9ng<\/strong>: RAID c\u1ee9ng y\u00eau c\u1ea7u b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ri\u00eang bi\u1ec7t, l\u00e0m t\u0103ng chi ph\u00ed \u0111\u1ea7u t\u01b0; RAID m\u1ec1m tuy ti\u1ebft ki\u1ec7m h\u01a1n nh\u01b0ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u00e0i nguy\u00ean h\u1ec7 \u0111i\u1ec1u h\u00e0nh.<\/li>\n<li><strong>Y\u00eau c\u1ea7u ph\u1ea7n c\u1ee9ng \u0111\u1ed3ng b\u1ed9<\/strong>: M\u1ed9t s\u1ed1 c\u1ea5p RAID y\u00eau c\u1ea7u \u1ed5 \u0111\u0129a c\u00f3 dung l\u01b0\u1ee3ng v\u00e0 t\u1ed1c \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 t\u1ed1i \u01b0u, ch\u1eb3ng h\u1ea1n RAID 1 c\u1ea7n hai \u1ed5 c\u00f9ng dung l\u01b0\u1ee3ng.<\/li>\n<li><strong>Nguy c\u01a1 m\u1ea5t d\u1eef li\u1ec7u trong m\u1ed9t s\u1ed1 lo\u1ea1i RAID<\/strong>: RAID 0 kh\u00f4ng c\u00f3 d\u1ef1 ph\u00f2ng n\u00ean n\u1ebfu m\u1ed9t \u1ed5 \u0111\u0129a h\u1ecfng, to\u00e0n b\u1ed9 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 m\u1ea5t.<\/li>\n<li><strong>Hi\u1ec7u su\u1ea5t ghi c\u00f3 th\u1ec3 gi\u1ea3m<\/strong>: C\u00e1c c\u1ea5p RAID s\u1eed d\u1ee5ng parity (nh\u01b0 RAID 5, RAID 6) c\u00f3 th\u1ec3 l\u00e0m ch\u1eadm thao t\u00e1c ghi do ph\u1ea3i t\u00ednh to\u00e1n th\u00f4ng tin ki\u1ec3m tra.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i m\u1ea5t th\u1eddi gian<\/strong>: Vi\u1ec7c kh\u00f4i ph\u1ee5c d\u1eef li\u1ec7u khi \u1ed5 \u0111\u0129a b\u1ecb l\u1ed7i trong m\u1ed9t s\u1ed1 c\u1ea5p RAID c\u00f3 th\u1ec3 m\u1ea5t nhi\u1ec1u th\u1eddi gian h\u01a1n so v\u1edbi d\u1ef1 ph\u00f2ng \u0111\u01a1n gi\u1ea3n nh\u01b0 RAID 1.<\/li>\n<\/ul>\n<p>Nh\u01b0 v\u1eady, RAID c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt v\u1ec1 hi\u1ec7u su\u1ea5t, b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, song c\u0169ng \u0111i k\u00e8m v\u1edbi nh\u1eefng h\u1ea1n ch\u1ebf v\u1ec1 chi ph\u00ed, y\u00eau c\u1ea7u ph\u1ea7n c\u1ee9ng v\u00e0 m\u1ed9t s\u1ed1 r\u1ee7i ro t\u00f9y thu\u1ed9c v\u00e0o c\u1ea5p RAID c\u1ee5 th\u1ec3. Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea5p RAID ph\u00f9 h\u1ee3p c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng, ng\u00e2n s\u00e1ch v\u00e0 y\u00eau c\u1ea7u b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"RAID-co-the-thay-the-cho-back-up-duoc-khong\"><\/span>RAID c\u00f3 th\u1ec3 thay th\u1ebf cho back-up \u0111\u01b0\u1ee3c kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1eb7c d\u00f9 RAID cung c\u1ea5p m\u1ed9t s\u1ed1 h\u00ecnh th\u1ee9c b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u, nh\u01b0ng n\u00f3 <strong>kh\u00f4ng ph\u1ea3i l\u00e0 gi\u1ea3i ph\u00e1p thay th\u1ebf ho\u00e0n to\u00e0n cho vi\u1ec7c sao l\u01b0u d\u1eef li\u1ec7u (backup)<\/strong>. RAID gi\u00fap b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u tr\u01b0\u1edbc c\u00e1c l\u1ed7i ph\u1ea7n c\u1ee9ng, nh\u01b0ng n\u00f3 kh\u00f4ng b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u kh\u1ecfi nh\u1eefng r\u1ee7i ro kh\u00e1c nh\u01b0 l\u1ed7i ph\u1ea7n m\u1ec1m, virus, ho\u1eb7c l\u1ed7i do con ng\u01b0\u1eddi g\u00e2y ra.<\/p>\n<figure id=\"attachment_15941\" aria-describedby=\"caption-attachment-15941\" style=\"width: 438px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15941\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/RAID-co-the-thay-the-cho-back-up-duoc-khong.webp\" alt=\"RAID c\u00f3 th\u1ec3 thay th\u1ebf cho back-up \u0111\u01b0\u1ee3c kh\u00f4ng?\" width=\"438\" height=\"300\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/RAID-co-the-thay-the-cho-back-up-duoc-khong.webp 438w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/RAID-co-the-thay-the-cho-back-up-duoc-khong-300x205.webp 300w\" sizes=\"auto, (max-width: 438px) 100vw, 438px\" \/><figcaption id=\"caption-attachment-15941\" class=\"wp-caption-text\">RAID c\u00f3 th\u1ec3 thay th\u1ebf cho back-up \u0111\u01b0\u1ee3c kh\u00f4ng?<\/figcaption><\/figure>\n<p>Backup l\u00e0 qu\u00e1 tr\u00ecnh t\u1ea1o b\u1ea3n sao d\u1eef li\u1ec7u v\u00e0 l\u01b0u tr\u1eef n\u00f3 \u1edf m\u1ed9t v\u1ecb tr\u00ed kh\u00e1c, th\u01b0\u1eddng l\u00e0 tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb kh\u00e1c ho\u1eb7c trong m\u1ed9t d\u1ecbch v\u1ee5 <a href=\"https:\/\/interdata.vn\/blog\/cloud-storage-la-gi\/\">l\u01b0u tr\u1eef \u0111\u00e1m m\u00e2y<\/a>. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ngay c\u1ea3 khi to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng RAID g\u1eb7p s\u1ef1 c\u1ed1, b\u1ea1n v\u1eabn c\u00f3 th\u1ec3 kh\u00f4i ph\u1ee5c d\u1eef li\u1ec7u t\u1eeb b\u1ea3n sao l\u01b0u.<\/p>\n<p>V\u00ec v\u1eady, trong b\u1ea5t k\u1ef3 h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef n\u00e0o, vi\u1ec7c k\u1ebft h\u1ee3p gi\u1eefa RAID v\u00e0 backup l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n d\u1eef li\u1ec7u to\u00e0n di\u1ec7n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"So-sanh-RAID-0-va-RAID-1\"><\/span>So s\u00e1nh RAID 0 v\u00e0 RAID 1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u00e2y l\u00e0 hai c\u1ea5p \u0111\u1ed9 RAID c\u01a1 b\u1ea3n v\u00e0 th\u01b0\u1eddng g\u00e2y nh\u1ea7m l\u1eabn cho ng\u01b0\u1eddi m\u1edbi. H\u00e3y xem x\u00e9t s\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh d\u01b0\u1edbi b\u1ea3ng ph\u00e2n t\u00edch sau:<\/p>\n<table style=\"width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; border: 1px solid #0D6EFD;\">\n<thead>\n<tr>\n<th style=\"background: #0d6efd; color: #ffffff; padding: 12px; border: 1px solid #0b5ed7; text-align: center;\">Ti\u00eau ch\u00ed<\/th>\n<th style=\"background: #0d6efd; color: #ffffff; padding: 12px; border: 1px solid #0b5ed7; text-align: center;\">RAID 0<\/th>\n<th style=\"background: #0d6efd; color: #ffffff; padding: 12px; border: 1px solid #0b5ed7; text-align: center;\">RAID 1<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #F0F6FF;\">\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">M\u1ee5c \u0111\u00edch ch\u00ednh<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">T\u0103ng hi\u1ec7u su\u1ea5t<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">B\u1ea3o v\u1ec7 d\u1eef li\u1ec7u<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">C\u00e1ch ho\u1ea1t \u0111\u1ed9ng<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">Ghi d\u1eef li\u1ec7u \u0111\u1ed3ng th\u1eddi tr\u00ean c\u00e1c \u1ed5 \u0111\u0129a<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">Sao ch\u00e9p d\u1eef li\u1ec7u sang \u1ed5 \u0111\u0129a kh\u00e1c<\/span><\/td>\n<\/tr>\n<tr style=\"background: #F0F6FF;\">\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">Hi\u1ec7u su\u1ea5t<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">T\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">T\u1ed1c \u0111\u1ed9 \u0111\u1ecdc t\u0103ng nh\u1eb9, ghi ch\u1eadm h\u01a1n<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">Kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">Kh\u00f4ng c\u00f3. H\u1ecfng 1 \u1ed5 m\u1ea5t t\u1ea5t c\u1ea3<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">C\u00f3. H\u1ecfng 1 \u1ed5, d\u1eef li\u1ec7u v\u1eabn an to\u00e0n<\/span><\/td>\n<\/tr>\n<tr style=\"background: #F0F6FF;\">\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">Dung l\u01b0\u1ee3ng kh\u1ea3 d\u1ee5ng<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">T\u1ed5ng dung l\u01b0\u1ee3ng c\u1ee7a t\u1ea5t c\u1ea3 \u1ed5 \u0111\u0129a<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">B\u1eb1ng dung l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t \u1ed5 \u0111\u0129a<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">S\u1ed1 l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a t\u1ed1i thi\u1ec3u<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">2<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">2<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>N\u1ebfu b\u1ea1n c\u1ea7n t\u1ed1c \u0111\u1ed9 v\u00e0 kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u quan tr\u1ecdng, RAID 0 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu s\u1ef1 an to\u00e0n c\u1ee7a d\u1eef li\u1ec7u l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u, h\u00e3y ch\u1ecdn RAID 1.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Nen-dung-RAID-5-hay-RAID-10\"><\/span>N\u00ean d\u00f9ng RAID 5 hay RAID 10?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u00e2y l\u00e0 c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb h\u1ec7 th\u1ed1ng. S\u1ef1 l\u1ef1a ch\u1ecdn ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t, dung l\u01b0\u1ee3ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i.<\/p>\n<table style=\"width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; border: 1px solid #0D6EFD;\">\n<thead>\n<tr>\n<th style=\"background: #0d6efd; color: #ffffff; padding: 12px; border: 1px solid #0b5ed7; text-align: center;\">Ti\u00eau ch\u00ed<\/th>\n<th style=\"background: #0d6efd; color: #ffffff; padding: 12px; border: 1px solid #0b5ed7; text-align: center;\">RAID 5<\/th>\n<th style=\"background: #0d6efd; color: #ffffff; padding: 12px; border: 1px solid #0b5ed7; text-align: center;\">RAID 10<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #F0F6FF;\">\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">Hi\u1ec7u su\u1ea5t<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">T\u1ed1c \u0111\u1ed9 \u0111\u1ecdc t\u1ed1t, ghi trung b\u00ecnh<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">T\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi c\u1ef1c cao<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">Kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">H\u1ecfng 1 \u1ed5 \u0111\u0129a<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">H\u1ecfng 1-2 \u1ed5 \u0111\u0129a (t\u00f9y v\u1ecb tr\u00ed)<\/span><\/td>\n<\/tr>\n<tr style=\"background: #F0F6FF;\">\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">Dung l\u01b0\u1ee3ng kh\u1ea3 d\u1ee5ng<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">(n-1) * Dung l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">n\/2 * Dung l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">S\u1ed1 l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a t\u1ed1i thi\u1ec3u<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">3<\/span><\/td>\n<td style=\"padding: 12px; border: 1px solid #B6D3FF;\"><span style=\"color: #000000;\">4<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>N\u1ebfu b\u1ea1n c\u1ea7n t\u1ed1i \u01b0u dung l\u01b0\u1ee3ng v\u00e0 c\u00f3 m\u1ed9t ch\u00fat hi\u1ec7u su\u1ea5t, RAID 5 l\u00e0 l\u1ef1a ch\u1ecdn kinh t\u1ebf. Nh\u01b0ng n\u1ebfu b\u1ea1n c\u1ea7n hi\u1ec7u su\u1ea5t cao nh\u1ea5t v\u00e0 \u0111\u1ed9 an to\u00e0n d\u1eef li\u1ec7u v\u01b0\u1ee3t tr\u1ed9i, RAID 10 l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1t h\u01a1n, d\u00f9 chi ph\u00ed cao h\u01a1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ung-dung-cua-RAID-trong-server\"><\/span>\u1ee8ng d\u1ee5ng c\u1ee7a RAID trong server<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div>\n<div>\n<div>\n<div>\n<div>\n<div>\n<div>\n<div>\n<p>\u1ee8ng d\u1ee5ng c\u1ee7a RAID (Redundant Array of Independent Disks) trong server r\u1ea5t \u0111a d\u1ea1ng v\u00e0 quan tr\u1ecdng, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>T\u0103ng \u0111\u1ed9 tin c\u1eady d\u1eef li\u1ec7u<\/strong>: RAID gi\u00fap b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u kh\u1ecfi m\u1ea5t m\u00e1t do l\u1ed7i ph\u1ea7n c\u1ee9ng b\u1eb1ng c\u00e1ch sao ch\u00e9p (mirror) ho\u1eb7c t\u1ea1o d\u1eef li\u1ec7u ch\u1eb5n l\u1ebb (parity) tr\u00ean nhi\u1ec1u \u1ed5 c\u1ee9ng v\u1eadt l\u00fd, nh\u1edd \u0111\u00f3 d\u1eef li\u1ec7u v\u1eabn an to\u00e0n v\u00e0 c\u00f3 th\u1ec3 ph\u1ee5c h\u1ed3i khi \u1ed5 c\u1ee9ng b\u1ecb l\u1ed7i.<\/li>\n<li><strong>N\u00e2ng cao hi\u1ec7u su\u1ea5t \u0111\u1ecdc\/ghi<\/strong>: RAID ph\u00e2n chia d\u1eef li\u1ec7u v\u00e0 ph\u00e2n b\u1ed5 \u0111\u1ed3ng th\u1eddi tr\u00ean nhi\u1ec1u \u1ed5 c\u1ee9ng gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t d\u1eef li\u1ec7u, r\u1ea5t h\u1eefu \u00edch trong m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec1u truy c\u1eadp v\u00e0 y\u00eau c\u1ea7u t\u1ed1c \u0111\u1ed9 cao.<\/li>\n<li><strong>T\u1ed1i \u01b0u dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef<\/strong>: RAID c\u00f3 th\u1ec3 g\u1ed9p nhi\u1ec1u \u1ed5 c\u1ee9ng v\u1eadt l\u00fd th\u00e0nh \u1ed5 c\u1ee9ng \u1ea3o logic, t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 kh\u00f4ng gian l\u01b0u tr\u1eef m\u00e0 v\u1eabn \u0111\u1ea3m b\u1ea3o an to\u00e0n.<\/li>\n<li><strong>\u0110\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n s\u00e0ng c\u1ee7a d\u1eef li\u1ec7u<\/strong>: RAID gi\u00fap h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c ngay c\u1ea3 khi m\u1ed9t ho\u1eb7c v\u00e0i \u1ed5 c\u1ee9ng g\u1eb7p s\u1ef1 c\u1ed1, gi\u00fap doanh nghi\u1ec7p duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng gi\u00e1n \u0111o\u1ea1n.<\/li>\n<li><strong>Gi\u1ea3m t\u1ea3i t\u00e0i nguy\u00ean h\u1ec7 th\u1ed1ng<\/strong>: RAID ph\u1ea7n c\u1ee9ng s\u1eed d\u1ee5ng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n chuy\u00ean d\u1ee5ng \u0111\u1ec3 <a href=\"https:\/\/interdata.vn\/blog\/data-preprocessing-la-gi\/\">x\u1eed l\u00fd d\u1eef li\u1ec7u<\/a>, gi\u00fap gi\u1ea3m t\u1ea3i cho <a href=\"https:\/\/interdata.vn\/blog\/cpu-server\/\">CPU<\/a> c\u1ee7a server, t\u0103ng hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh.<\/li>\n<\/ul>\n<p>Nh\u01b0 v\u1eady, RAID l\u00e0 gi\u1ea3i ph\u00e1p quan tr\u1ecdng cho c\u00e1c h\u1ec7 th\u1ed1ng server nh\u1eb1m b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u, t\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh, ph\u00f9 h\u1ee3p v\u1edbi \u0111a d\u1ea1ng nhu c\u1ea7u t\u1eeb doanh nghi\u1ec7p nh\u1ecf \u0111\u1ebfn c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/data-center-la-gi\/\">trung t\u00e2m d\u1eef li\u1ec7u<\/a> l\u1edbn.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Khi-nao-can-su-dung-RAID\"><\/span>Khi n\u00e0o c\u1ea7n s\u1eed d\u1ee5ng RAID?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>B\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng RAID (Redundant Array of Independent Disks) trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n<ul>\n<li>Khi mu\u1ed1n t\u0103ng hi\u1ec7u su\u1ea5t \u0111\u1ecdc\/ghi d\u1eef li\u1ec7u so v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t \u1ed5 \u0111\u0129a \u0111\u01a1n l\u1ebb, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi c\u00e1c \u1ed5 \u0111\u0129a l\u1edbn ho\u1eb7c h\u1ec7 th\u1ed1ng x\u1eed l\u00fd l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn. V\u00ed d\u1ee5, RAID 0 \u0111\u01b0\u1ee3c d\u00f9ng khi c\u1ea7n t\u1ed1c \u0111\u1ed9 cao trong x\u1eed l\u00fd h\u00ecnh \u1ea3nh, video ho\u1eb7c d\u1eef li\u1ec7u t\u1ea1m th\u1eddi kh\u00f4ng quan tr\u1ecdng v\u1ec1 \u0111\u1ed9 an to\u00e0n d\u1eef li\u1ec7u.<\/li>\n<li>Khi c\u1ea7n t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 an to\u00e0n v\u00e0 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u kh\u1ecfi m\u1ea5t m\u00e1t do l\u1ed7i \u1ed5 \u0111\u0129a. C\u00e1c c\u1ea5p RAID nh\u01b0 RAID 1, RAID 5, RAID 6 cung c\u1ea5p t\u00ednh n\u0103ng sao l\u01b0u ho\u1eb7c s\u1eed d\u1ee5ng parity \u0111\u1ec3 kh\u00f4i ph\u1ee5c d\u1eef li\u1ec7u khi m\u1ed9t ho\u1eb7c nhi\u1ec1u \u1ed5 \u0111\u0129a h\u1ecfng.<\/li>\n<li>Khi mu\u1ed1n t\u1ea1o kh\u00f4ng gian l\u01b0u tr\u1eef l\u1edbn h\u01a1n b\u1eb1ng c\u00e1ch gh\u00e9p nhi\u1ec1u \u1ed5 \u0111\u0129a v\u1eadt l\u00fd th\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng duy nh\u1ea5t, gi\u00fap d\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef.<\/li>\n<li>Khi h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c, kh\u00f4ng gi\u00e1n \u0111o\u1ea1n ngay c\u1ea3 khi m\u1ed9t \u1ed5 \u0111\u0129a h\u1ecfng, h\u1ed7 tr\u1ee3 hot swap \u0111\u1ec3 thay th\u1ebf \u1ed5 \u0111\u0129a h\u1ecfng m\u00e0 kh\u00f4ng ph\u1ea3i t\u1eaft thi\u1ebft b\u1ecb.<\/li>\n<li>Khi c\u00e2n nh\u1eafc hi\u1ec7u qu\u1ea3 chi ph\u00ed \u0111\u1ec3 d\u00f9ng nhi\u1ec1u \u1ed5 c\u1ee9ng gi\u00e1 r\u1ebb thay v\u00ec m\u1ed9t \u1ed5 c\u1ee9ng l\u1edbn v\u00e0 \u0111\u1eaft ti\u1ec1n.<\/li>\n<li>Khi h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef l\u00e0 m\u00e1y ch\u1ee7, m\u00e1y tr\u1ea1m ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb y\u00eau c\u1ea7u hi\u1ec7u su\u1ea5t cao, \u0111\u1ed9 an to\u00e0n d\u1eef li\u1ec7u ho\u1eb7c dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef l\u1edbn m\u00e0 kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c v\u1edbi \u1ed5 \u0111\u0129a \u0111\u01a1n.<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, RAID \u0111\u01b0\u1ee3c d\u00f9ng khi b\u1ea1n c\u1ea7n k\u1ebft h\u1ee3p t\u0103ng t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t, t\u1ed1i \u01b0u dung l\u01b0\u1ee3ng v\u00e0 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u trong c\u00e1c m\u00f4i tr\u01b0\u1eddng t\u1eeb c\u00e1 nh\u00e2n \u0111\u1ebfn doanh nghi\u1ec7p, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef v\u00e0 m\u00e1y ch\u1ee7.<\/p>\n<figure id=\"attachment_32562\" aria-describedby=\"caption-attachment-32562\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-32562\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/11\/Khi-nao-can-su-dung-RAID.jpg\" alt=\"Khi n\u00e0o c\u1ea7n s\u1eed d\u1ee5ng RAID\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/11\/Khi-nao-can-su-dung-RAID.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/11\/Khi-nao-can-su-dung-RAID-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/11\/Khi-nao-can-su-dung-RAID-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-32562\" class=\"wp-caption-text\">Khi n\u00e0o c\u1ea7n s\u1eed d\u1ee5ng RAID?<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cach-chon-cau-hinh-RAID-toi-uu-theo-nhu-cau\"><\/span>C\u00e1ch ch\u1ecdn c\u1ea5u h\u00ecnh RAID t\u1ed1i \u01b0u theo nhu c\u1ea7u<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>RAID c\u00f3 th\u1ec3 gi\u00fap h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng m\u1ea1nh m\u1ebd v\u00e0 \u1ed5n \u0111\u1ecbnh h\u01a1n. Tuy nhi\u00ean, \u0111\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a hi\u1ec7u qu\u1ea3 v\u00e0 t\u1ed1i \u01b0u chi ph\u00ed, b\u1ea1n c\u1ea7n ch\u1ecdn ki\u1ec3u RAID ph\u00f9 h\u1ee3p v\u1edbi c\u1ea5u h\u00ecnh hi\u1ec7n t\u1ea1i. T\u00f9y m\u1ee5c ti\u00eau l\u01b0u tr\u1eef, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o g\u1ee3i \u00fd d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2-o-cung-1TB\"><\/span>2 \u1ed5 c\u1ee9ng 1TB<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>RAID 0<\/strong>: Th\u00edch h\u1ee3p khi \u01b0u ti\u00ean dung l\u01b0\u1ee3ng v\u00e0 t\u1ed1c \u0111\u1ed9, mang l\u1ea1i 2TB l\u01b0u tr\u1eef c\u00f9ng hi\u1ec7u su\u1ea5t cao. Nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 n\u1ebfu m\u1ed9t \u1ed5 h\u1ecfng, to\u00e0n b\u1ed9 d\u1eef li\u1ec7u s\u1ebd m\u1ea5t.<\/li>\n<li><strong>RAID 1<\/strong>: T\u1eadp trung v\u00e0o b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u, sao ch\u00e9p to\u00e0n b\u1ed9 sang \u1ed5 c\u00f2n l\u1ea1i v\u00e0 gi\u1eef nguy\u00ean dung l\u01b0\u1ee3ng 1TB. D\u1eef li\u1ec7u v\u1eabn an to\u00e0n n\u1ebfu m\u1ed9t \u1ed5 b\u1ecb h\u1ecfng.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"3-o-cung-1TB\"><\/span>3 \u1ed5 c\u1ee9ng 1TB<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>RAID 5<\/strong>: L\u1ef1a ch\u1ecdn c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t v\u00e0 an to\u00e0n d\u1eef li\u1ec7u, dung l\u01b0\u1ee3ng s\u1eed d\u1ee5ng 2TB. H\u1ec7 th\u1ed1ng v\u1eabn ho\u1ea1t \u0111\u1ed9ng \u1ed5n n\u1ebfu m\u1ed9t \u1ed5 g\u1eb7p s\u1ef1 c\u1ed1.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"4-o-cung-1TB\"><\/span>4 \u1ed5 c\u1ee9ng 1TB<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>RAID 5<\/strong>: Cung c\u1ea5p 3TB dung l\u01b0\u1ee3ng v\u00e0 v\u1eabn \u0111\u1ea3m b\u1ea3o an to\u00e0n d\u1eef li\u1ec7u khi m\u1ed9t \u1ed5 b\u1ecb h\u1ecfng.<\/li>\n<li><strong>RAID 6<\/strong>: T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng b\u1ea3o m\u1eadt, dung l\u01b0\u1ee3ng 2TB, v\u1eabn b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u khi hai \u1ed5 g\u1eb7p s\u1ef1 c\u1ed1.<\/li>\n<li><strong>RAID 10<\/strong>: K\u1ebft h\u1ee3p t\u1ed1c \u0111\u1ed9 v\u00e0 b\u1ea3o m\u1eadt, dung l\u01b0\u1ee3ng 2TB, c\u00f3 th\u1ec3 ch\u1ecbu l\u1ed7i n\u1ebfu m\u1ed9t c\u1eb7p \u1ed5 b\u1ecb h\u1ecfng.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"5-hoac-6-o-cung-1TB\"><\/span>5 ho\u1eb7c 6 \u1ed5 c\u1ee9ng 1TB<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>RAID 5<\/strong>: \u0110\u00e1p \u1ee9ng t\u1ed1t nhu c\u1ea7u b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n v\u00e0 hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh.<\/li>\n<li><strong>RAID 6<\/strong>: D\u00e0nh cho tr\u01b0\u1eddng h\u1ee3p y\u00eau c\u1ea7u \u0111\u1ed9 an to\u00e0n cao h\u01a1n, v\u1eabn \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u an to\u00e0n khi c\u00f3 hai \u1ed5 h\u1ecfng.<\/li>\n<\/ul>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa RAID ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m c\u0169ng nh\u01b0 c\u00e1c c\u1ea5p \u0111\u1ed9 RAID ph\u00f9 h\u1ee3p s\u1ebd \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 an to\u00e0n c\u1ee7a d\u1eef li\u1ec7u. K\u1ebft h\u1ee3p gi\u1eefa RAID v\u00e0 backup l\u00e0 c\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 to\u00e0n di\u1ec7n.<\/p>\n<p>RAID l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p l\u01b0u tr\u1eef m\u1ea1nh m\u1ebd, gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u trong c\u00e1c h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh v\u00e0 m\u00e1y ch\u1ee7. Tuy nhi\u00ean, \u0111\u1ec3 tri\u1ec3n khai RAID hi\u1ec7u qu\u1ea3, b\u1ea1n c\u1ea7n hi\u1ec3u r\u00f5 <strong>RAID l\u00e0 g\u00ec<\/strong>, hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c lo\u1ea1i RAID kh\u00e1c nhau, v\u00e0 c\u00e1ch ch\u1ecdn c\u1ea5u h\u00ecnh RAID ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a m\u00ecnh.<\/p>\n<p>T\u00ecm hi\u1ec3u th\u00eam: <strong><a href=\"https:\/\/interdata.vn\/thue-vps\/\">VPS gi\u00e1 r\u1ebb, t\u1ed1c \u0111\u1ed9 cao &#8211; c\u1ea5u h\u00ecnh m\u1ea1nh<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>RAID (Redundant Array of Independent Disks) l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 l\u01b0u tr\u1eef d\u1eef li\u1ec7u cho ph\u00e9p g\u1ed9p nhi\u1ec1u \u1ed5 c\u1ee9ng v\u1eadt l\u00fd th\u00e0nh m\u1ed9t ho\u1eb7c nhi\u1ec1u \u1ed5 c\u1ee9ng logic, v\u1edbi m\u1ee5c \u0111\u00edch t\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n d\u1eef li\u1ec7u. B\u00e0i vi\u1ebft n\u00e0y c\u1ee7a InterData s\u1ebd \u0111i s\u00e2u v\u00e0o t\u00ecm hi\u1ec3u RAID l\u00e0<\/p>\n","protected":false},"author":11,"featured_media":32560,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[],"class_list":["post-15937","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/15937","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=15937"}],"version-history":[{"count":3,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/15937\/revisions"}],"predecessor-version":[{"id":33397,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/15937\/revisions\/33397"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/32560"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=15937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=15937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=15937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}