{"id":954,"date":"2019-01-03T05:04:00","date_gmt":"2019-01-03T05:04:00","guid":{"rendered":"https:\/\/www.thegioimaychu.vn\/blog\/?p=954"},"modified":"2019-01-03T05:12:33","modified_gmt":"2019-01-03T05:12:33","slug":"san-vs-nas-cau-chuyen-ve-2-giao-thuc-luu-tru","status":"publish","type":"post","link":"https:\/\/thegioimaychu.vn\/blog\/tong-hop\/san-vs-nas-cau-chuyen-ve-2-giao-thuc-luu-tru-p954\/","title":{"rendered":"SAN vs NAS: C\u00e2u chuy\u1ec7n v\u1ec1 2 giao th\u1ee9c l\u01b0u tr\u1eef"},"content":{"rendered":"<style>.iblink{color:#975!important;}.iblink:hover{color:orange!important;}<\/style><p>NAS? SAN? \u0110\u00f3 l\u00e0 giao th\u1ee9c l\u01b0u tr\u1eef t\u1ed1t nh\u1ea5t, \u0111\u00f3 l\u00e0 giao th\u1ee9c l\u01b0u tr\u1eef t\u1ec7 nh\u1ea5t. \u0110\u00e2y l\u00e0 th\u1eddi c\u1ee7a SAN, \u0111\u00e2y l\u00e0 th\u1eddi c\u1ee7a NAS. v.v&#8230; Th\u00f4i, m\u00ecnh s\u1ebd d\u1eebng l\u1ea1i v\u1edbi &#8220;c\u00e2u chuy\u1ec7n c\u1ee7a hai th\u00e0nh ph\u1ed1 \u0111\u00e1ng s\u1ed1ng nh\u1ea5t&#8221; (th\u00e0nh ph\u1ed1 n\u00e0o c\u0169ng nh\u1ea5t?). Trong b\u00e0i n\u00e0y nh\u00f3m NTC Tech c\u1ee7a TheGioiMayChu s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn SAN v\u00e0 NAS, \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a c\u00e1c giao th\u1ee9c l\u01b0u tr\u1eef n\u00e0y v\u00e0 t\u1ea1i sao ng\u01b0\u1eddi ta n\u00ean ch\u1ecdn giao th\u1ee9c n\u00e0y h\u01a1n l\u00e0 giao th\u1ee9c kia.<\/p>\n<h3>L\u01b0u tr\u1eef block<\/h3>\n<p>SAN (<a class=\"iblink\" href=\"\/storage\/san\/\">Storage Area Network<\/a>) l\u00e0 m\u1ed9t giao th\u1ee9c l\u01b0u tr\u1eef c\u1ea5p kh\u1ed1i (block-level), ngh\u0129a l\u00e0 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 truy c\u1eadp theo block. T\u1ea5t c\u1ea3 c\u00e1c block d\u1eef li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong c\u00e1c Logical Unit Number, LUN. LUN sau \u0111\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0a ra cho initiator (host) t\u1eeb m\u1ed9t target (storage system). \u0110\u1ed1i v\u1edbi m\u1ed9t thi\u1ebft b\u1ecb cu\u1ed1i nh\u01b0 m\u00e1y ch\u1ee7, c\u00e1c LUN n\u00e0y c\u0169ng gi\u1ed1ng nh\u01b0 m\u1ed9t <a class=\"iblink\" href=\"\/storage\/\">thi\u1ebft b\u1ecb l\u01b0u tr\u1eef<\/a> g\u1eafn tr\u1ef1c ti\u1ebfp (Direct-Attached Storage, DAS) ho\u1eb7c m\u1ed9t \u1ed5 c\u1ee9ng c\u1ee5c b\u1ed9. Nh\u01b0ng kh\u00f4ng gi\u1ed1ng nh\u01b0 DAS, b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c t\u00ednh di \u0111\u1ed9ng v\u00e0 h\u00e0ng lo\u1ea1t l\u1ee3i \u00edch kh\u00e1c t\u1eeb kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd t\u1eadp trung.<\/p>\n<p>M\u1ed9t l\u01b0u \u00fd \u0111\u1ed1i v\u1edbi block storage l\u00e0 b\u1ea1n c\u1ea7n \u0111\u1ecbnh d\u1ea1ng \u1ed5 \u0111\u0129a v\u1edbi file system d\u00e0nh ri\u00eang cho h\u1ec7 \u0111i\u1ec1u h\u00e0nh. \u0110\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 Windows, c\u00f3 l\u1ebd b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng NTFS. M\u1ed9t l\u01b0u \u00fd kh\u00e1c, t\u00f9y thu\u1ed9c v\u00e0o file system, b\u1ea1n c\u00f3 th\u1ec3 b\u1ecb gi\u1edbi h\u1ea1n trong vi\u1ec7c c\u00f3 m\u1ed9t m\u00e1y ch\u1ee7 duy nh\u1ea5t \u0111\u1ecdc v\u00e0 ghi d\u1eef li\u1ec7u. Nh\u01b0ng \u0111\u1ed1i v\u1edbi m\u1ed9t file system \u0111\u01b0\u1ee3c ph\u00e2n c\u1ee5m (clustered) nh\u01b0 VMFS (vSphere datastores), n\u00f3 s\u1ebd x\u1eed l\u00fd vi\u1ec7c kh\u00f3a c\u00e1c thao t\u00e1c ghi t\u1eeb nhi\u1ec1u m\u00e1y ch\u1ee7 \u0111\u1ec3 ng\u0103n ng\u1eeba d\u1eef li\u1ec7u b\u1ecb h\u1ecfng, corrupted.<\/p>\n<p>N\u1ebfu b\u1ea1n cung c\u1ea5p d\u1eef li\u1ec7u b\u1eb1ng giao th\u1ee9c SAN, c\u00f3 th\u1ec3 b\u1ea1n c\u1ea7n ph\u1ea3i c\u00f3 ph\u1ea7n c\u1ee9ng chuy\u00ean d\u1ee5ng \u0111\u1ec3 v\u1eadn chuy\u1ec3n l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u hay traffic trong <a class=\"iblink\" href=\"\/storage\/san\/\">Storage Area Network<\/a>. V\u00ed d\u1ee5: n\u1ebfu b\u1ea1n cung c\u1ea5p d\u1eef li\u1ec7u SAN c\u1ee7a m\u00ecnh b\u1eb1ng giao th\u1ee9c Fibre Channel, b\u1ea1n ph\u1ea3i c\u00f3 c\u00e1c FC Switch v\u00e0 HBA (host-based adapter) d\u00e0nh ri\u00eang cho lo\u1ea1i traffic n\u00e0y. N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng giao th\u1ee9c iSCSI \u0111\u1ec3 l\u01b0u chuy\u1ec3n traffic n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c vi\u1ec7c \u0111\u00f3 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00f9ng c\u00e1c thi\u1ebft b\u1ecb switch v\u00e0 network card m\u00e0 b\u1ea1n s\u1eed d\u1ee5ng chung cho network traffic c\u1ee7a m\u00ecnh. Tuy nhi\u00ean, c\u00f3 th\u1ec3 b\u1ea1n s\u1ebd c\u00f3 c\u00e1c adapter CNA (converged network adapter) chuy\u00ean bi\u1ec7t tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 c\u1ee7a m\u00ecnh \u0111\u1ec3 gi\u1ea3m t\u1ea3i c\u00e1c thao t\u00e1c x\u1eed l\u00fd t\u1eeb CPU. C\u00e1c CNA n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 cung c\u1ea5p hi\u1ec7u n\u0103ng cao.<\/p>\n<p>Ph\u1ea7n c\u1ee9ng ri\u00eang bi\u1ec7t th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t l\u1ee3i th\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng SAN l\u00e0m giao th\u1ee9c l\u01b0u tr\u1eef. Th\u00f4ng th\u01b0\u1eddng, traffic l\u01b0u tr\u1eef \u0111\u01b0\u1ee3c t\u00e1ch bi\u1ec7t v\u1edbi traffic m\u1ea1ng n\u00f3i chung. V\u00ec SAN cung c\u1ea5p l\u01b0u tr\u1eef nhanh, linh ho\u1ea1t, n\u00ean n\u00f3 th\u01b0\u1eddng l\u00e0 giao th\u1ee9c l\u01b0u tr\u1eef \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn cho c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7u su\u1ea5t cao kh\u00e1c. V\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a giao th\u1ee9c NVMe v\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a NVMe-over-Fabric, l\u1ee3i \u00edch to l\u1edbn v\u1ec1 hi\u1ec7u n\u0103ng c\u1ee7a c\u00e1c giao th\u1ee9c l\u01b0u tr\u1eef SAN s\u1ebd l\u00e0 &#8220;nh\u00e2n t\u1ed1 l\u00e0m thay \u0111\u1ed5i cu\u1ed9c ch\u01a1i&#8221;.<\/p>\n<h3>L\u01b0u tr\u1eef file, file v\u00e0 file<\/h3>\n<p>Network-Attached Storage (NAS) th\u00ec nghe c\u00f3 v\u1ebb tr\u1eebu t\u01b0\u1ee3ng h\u01a1n so v\u1edbi l\u01b0u tr\u1eef SAN. T\u1eeb s\u1ef1 tr\u1eebu t\u01b0\u1ee3ng n\u00e0y l\u00e0m xu\u1ea5t hi\u1ec7n m\u1ed9t trong nh\u1eefng l\u1ee3i th\u1ebf l\u1edbn nh\u1ea5t c\u1ee7a NAS: S\u1ef1 \u0111\u01a1n gi\u1ea3n! Thay v\u00ec c\u00e1c block, d\u1eef li\u1ec7u n\u1eb1m trong c\u00e1c volume \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb c\u00e1c file v\u00e0 th\u01b0 m\u1ee5c. N\u00f3 l\u00e0 m\u1ed9t ki\u1ebfn \u200b\u200btr\u00fac client-server \u0111i\u1ec3n h\u00ecnh. Kh\u00e1ch h\u00e0ng truy c\u1eadp c\u00e1c th\u01b0 m\u1ee5c v\u00e0 file t\u1eeb \u0111\u01b0\u1eddng d\u1eabn UNC m\u00e0 m\u00e1y ch\u1ee7 NAS chia s\u1ebb. V\u00ec m\u00e1y ch\u1ee7 NAS x\u1eed l\u00fd file system, d\u1eef li\u1ec7u ho\u00e0n to\u00e0n \u0111\u1ed9c l\u1eadp v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i. Nhi\u1ec1u m\u00e1y kh\u00e1ch ho\u1eb7c thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i c\u00f9ng m\u1ed9t file m\u00e0 kh\u00f4ng g\u1eb7p ph\u1ea3i v\u1ea5n \u0111\u1ec1 g\u00ec.<\/p>\n<p>NFS, SMB v\u00e0 CIFS (k\u1ebf th\u1eeba t\u1eeb SMB 1) \u0111\u1ec1u thu\u1ed9c nh\u00f3m giao th\u1ee9c NAS. NAS l\u00e0 m\u1ed9t giao th\u1ee9c l\u01b0u tr\u1eef d\u1eef li\u1ec7u phi c\u1ea5u tr\u00fac. C\u00e1c file chia s\u1ebb v\u00e0 th\u01b0 m\u1ee5c g\u1ed1c t\u1ea1o n\u00ean r\u1ea5t nhi\u1ec1u d\u1eef li\u1ec7u phi c\u1ea5u tr\u00fac ki\u1ec3u n\u00e0y. C\u00e1c kho d\u1eef li\u1ec7u NFS bao g\u1ed3m m\u1ed9t ph\u1ea7n kh\u00e1c c\u1ee7a d\u1eef li\u1ec7u NAS.<\/p>\n<p>\u01afu \u0111i\u1ec3m c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng giao th\u1ee9c NAS bao g\u1ed3m vi\u1ec7c qu\u1ea3n l\u00fd d\u1ec5 d\u00e0ng h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng t\u1eadn d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng hi\u1ec7n t\u1ea1i c\u1ee7a b\u1ea1n. M\u1ed9t l\u1ee3i \u00edch n\u1eefa l\u00e0 v\u00ec d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef \u1edf c\u1ea5p \u0111\u1ed9 file, b\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng thu nh\u1ecf ho\u1eb7c t\u1ef1 \u0111\u1ed9ng m\u1edf r\u1ed9ng volume. Kh\u1ea3 n\u0103ng thu nh\u1ecf volume \u0111\u1ec3 l\u1ea5y l\u1ea1i kh\u00f4ng gian \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 qu\u00e1 m\u1ee9c l\u00e0 m\u1ed9t l\u1ee3i \u00edch r\u1ea5t l\u1edbn. Khi s\u1eed d\u1ee5ng SAN l\u00e0m giao th\u1ee9c l\u01b0u tr\u1eef, b\u1ea1n th\u1ef1c s\u1ef1 ch\u1ec9 c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng c\u00e1c LUN. \u0110\u1ec3 c\u00f3 c\u00e1c LUN nh\u1ecf h\u01a1n, b\u1ea1n c\u1ea7n ph\u1ea3i t\u1ea1o l\u1ea1i LUN \u0111\u00f3 v\u00e0 di chuy\u1ec3n t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u sang LUN m\u1edbi nh\u1ecf h\u01a1n.<\/p>\n<p>SAN v\u00e0 NAS \u0111\u1ec1u c\u00f3 l\u1ee3i \u00edch v\u00e0 s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i ri\u00eang. Gi\u1ed1ng nh\u01b0 h\u1ea7u h\u1ebft c\u00e1c c\u00e2u h\u1ecfi trong IT v\u1ec1 vi\u1ec7c n\u00ean ch\u1ecdn c\u00e1ch ti\u1ebfp c\u1eadn n\u00e0o \u0111\u1ec3 s\u1eed d\u1ee5ng, c\u00e2u tr\u1ea3 l\u1eddi v\u1eabn l\u00e0, &#8220;N\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o&#8230;&#8221;. M\u1ed9t \u0111i\u1ec1u may m\u1eafn l\u00e0, n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi &#8220;ho\u1eb7c&#8221;. V\u00ec \u0111\u00e3 c\u00f3 nhi\u1ec1u h\u00e3ng cung c\u1ea5p gi\u1ea3i ph\u00e1p k\u1ebft h\u1ee3p c\u1ea3 hai lo\u1ea1i l\u01b0u tr\u1eef nh\u01b0 <a href=\"https:\/\/thegioimaychu.vn\/storage\/netapp\">NetApp<\/a>, <a href=\"https:\/\/thegioimaychu.vn\/storage\/infortrend\">Infortrend<\/a>, <a href=\"https:\/\/thegioimaychu.vn\/storage\/qnap\">QNAP<\/a>,&#8230;<\/p>\n<div>____<br \/><b>B\u00e0i vi\u1ebft li\u00ean quan<\/b><\/div>\n<ul>\n<li><a href=\"https:\/\/thegioimaychu.vn\/blog\/?post_type=post&#038;p=23349\">Ch\u1ea1y \u1ea3o h\u00f3a Proxmox tr\u00ean h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef h\u1ee3p nh\u1ea5t EonStor GS c\u1ee7a Infortrend<\/a><\/li>\n<li><a href=\"https:\/\/thegioimaychu.vn\/blog\/?post_type=post&#038;p=22678\">Thi\u1ebft b\u1ecb NAS \u0111\u1ed9t nhi\u00ean b\u1ecb l\u1ed7i? L\u00e0m sao \u0111\u1ec3 chuy\u1ec3n d\u1eef li\u1ec7u sang thi\u1ebft b\u1ecb m\u1edbi m\u1ed9t c\u00e1ch an to\u00e0n?<\/a><\/li>\n<li><a href=\"https:\/\/thegioimaychu.vn\/blog\/?post_type=post&#038;p=22151\">QNAP ra m\u1eaft gi\u1ea3i ph\u00e1p High Availability v\u1edbi ki\u1ebfn tr\u00fac Dual-NAS \u2013 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c cho doanh nghi\u1ec7p<\/a><\/li>\n<li><a href=\"https:\/\/thegioimaychu.vn\/blog\/?post_type=post&#038;p=21626\">U.2 SSD: &#8220;Chi\u1ebfn binh&#8221; hi\u1ec7u n\u0103ng cao \u1ea9n m\u00ecnh trong th\u1ebf gi\u1edbi l\u01b0u tr\u1eef doanh nghi\u1ec7p<\/a><\/li>\n<li><a href=\"https:\/\/thegioimaychu.vn\/blog\/?post_type=post&#038;p=21606\">Gi\u1ea3i ph\u00e1p t\u00edch h\u1ee3p AI v\u00e0o h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef d\u1eef li\u1ec7u doanh nghi\u1ec7p: T\u01b0\u01a1ng lai \u0111\u00e3 \u0111\u1ebfn!<\/a><\/li>\n<li><a href=\"https:\/\/thegioimaychu.vn\/blog\/?post_type=post&#038;p=21598\">Gi\u1ea3i ph\u00e1p l\u01b0u tr\u1eef c\u1ee7a Infortrend: C\u00e1ch m\u1ea1ng h\u00f3a Qu\u1ea3n l\u00fd D\u1eef li\u1ec7u Y t\u1ebf<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>NAS? SAN? &#272;&oacute; l&agrave; giao th&#7913;c l&#432;u tr&#7919; t&#7889;t nh&#7845;t, &#273;&oacute; l&agrave; giao th&#7913;c l&#432;u tr&#7919; t&#7879; nh&#7845;t. &#272;&acirc;y l&agrave; th&#7901;i c&#7911;a SAN, &#273;&acirc;y l&agrave; th&#7901;i c&#7911;a NAS. v.v&hellip; Th&ocirc;i, m&igrave;nh s&#7869; d&#7915;ng l&#7841;i v&#7899;i &ldquo;c&acirc;u chuy&#7879;n c&#7911;a hai th&agrave;nh ph&#7889; &#273;&aacute;ng s&#7889;ng nh&#7845;t&rdquo; (th&agrave;nh ph&#7889; n&agrave;o c&#361;ng nh&#7845;t?). Trong b&agrave;i n&agrave;y nh&oacute;m NTC Tech&#8230;<\/p>\n","protected":false},"author":2,"featured_media":955,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[44,1],"tags":[36,71,32],"class_list":["post-954","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product","category-tong-hop","tag-nas","tag-san","tag-storage"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SAN vs NAS: C\u00e2u chuy\u1ec7n v\u1ec1 2 giao th\u1ee9c l\u01b0u tr\u1eef - Blog | TheGioiMayChu<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thegioimaychu.vn\/blog\/tong-hop\/san-vs-nas-cau-chuyen-ve-2-giao-thuc-luu-tru-p954\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"SAN vs NAS: C\u00e2u chuy\u1ec7n v\u1ec1 2 giao th\u1ee9c l\u01b0u tr\u1eef - Blog | TheGioiMayChu\" \/>\n<meta name=\"twitter:description\" content=\"NAS? SAN? &#272;&oacute; l&agrave; giao th&#7913;c l&#432;u tr&#7919; t&#7889;t nh&#7845;t, &#273;&oacute; l&agrave; giao th&#7913;c l&#432;u tr&#7919; t&#7879; nh&#7845;t. &#272;&acirc;y l&agrave; th&#7901;i c&#7911;a SAN, &#273;&acirc;y l&agrave; th&#7901;i c&#7911;a NAS. v.v&hellip; Th&ocirc;i, m&igrave;nh s&#7869; d&#7915;ng l&#7841;i v&#7899;i &ldquo;c&acirc;u chuy&#7879;n c&#7911;a hai th&agrave;nh ph&#7889; &#273;&aacute;ng s&#7889;ng nh&#7845;t&rdquo; (th&agrave;nh ph&#7889; n&agrave;o c&#361;ng nh&#7845;t?). 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