{"id":161,"date":"2013-04-13T02:46:50","date_gmt":"2013-04-13T02:46:50","guid":{"rendered":"http:\/\/congnghepc.com\/2013\/04\/13\/hdd-ssd-va-o-lai-khi-nao-can-thiet\/"},"modified":"2016-08-25T05:07:11","modified_gmt":"2016-08-25T05:07:11","slug":"hdd-ssd-va-o-lai-khi-nao-can-thiet","status":"publish","type":"post","link":"https:\/\/tapchicntt.com\/hdd-ssd-va-o-lai-khi-nao-can-thiet\/","title":{"rendered":"HDD, SSD v\u00e0 \u1ed5 lai &#8211; khi n\u00e0o c\u1ea7n thi\u1ebft?"},"content":{"rendered":"<p>Dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng (HDD) ng\u00e0y c\u00e0ng l\u1edbn, \u1ed5 t\u0129nh (SSD) th\u00ec \u0111ang d\u1ea7n ph\u1ed5 bi\u1ebfn trong khi \u1ed5 lai (HHD) k\u1ebft h\u1ee3p \u01b0u \u0111i\u1ec3m c\u1ee7a HDD v\u00e0 SSD c\u0169ng h\u1ee9a h\u1eb9n t\u01b0\u01a1ng lai h\u1ea5p d\u1eabn kh\u00f4ng k\u00e9m.<\/p>\n<p><div class=\"image-autosize image-align-none\"><a href=\"\/sites\/default\/files\/images\/2013\/2\/1\/img-1359693810-1.jpg\"  class=\"fancybox\"><img decoding=\"async\" alt=\"\u1ea2nh\" src=\"https:\/\/vtcdn.com\/sites\/default\/files\/imagecache\/med\/images\/2013\/2\/1\/img-1359693810-1.jpg\" \/><\/a><\/p>\n<div class=\"image-caption\">Th\u1ecb tr\u01b0\u1eddng thi\u1ebft b\u1ecb l\u01b0u tr\u1eef th\u00eam ph\u1ea7n s\u00f4i \u0111\u1ed9ng v\u1edbi s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a \u1ed5 c\u1ee9ng lai.<\/div>\n<\/div>\n<p>\u1ed4 c\u1ee9ng truy\u1ec1n th\u1ed1ng (HHD) ch\u01b0a th\u1ec3 h\u1ed3i ph\u1ee5c ho\u00e0n to\u00e0n sau tr\u1eadn l\u0169 l\u1ecbch s\u1eed t\u1ea1i Th\u00e1i Lan n\u0103m 2011, trong khi \u1ed5 t\u0129nh (SSD) c\u0169ng c\u00f3 s\u1ef1 ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd v\u00e0 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn trong c\u00e1c d\u00f2ng m\u00e1y t\u00ednh x\u00e1ch tay cao c\u1ea5p. B\u00ean c\u1ea1nh \u0111\u00f3, vi\u1ec7c c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u1ed5 c\u1ee9ng h\u00e0ng \u0111\u1ea7u th\u1ebf gi\u1edbi l\u1ea7n l\u01b0\u1ee3t c\u00f4ng b\u1ed1 c\u00e1c m\u1eabu \u1ed5 c\u1ee9ng lai c\u0169ng g\u00f3p ph\u1ea7n t\u1ea1o s\u1ef1 \u0111a d\u1ea1ng th\u1ecb tr\u01b0\u1eddng.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n, \u01b0u khuy\u1ebft \u0111i\u1ec3m c\u00e1c thi\u1ebft b\u1ecb l\u01b0u tr\u1eef tr\u00ean h\u1ea7u gi\u00fap b\u1ea1n c\u00f3 s\u1ef1 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t cho nhu c\u1ea7u c\u00e1 nh\u00e2n:<\/p>\n<h4>\u1ed4 c\u1ee9ng truy\u1ec1n th\u1ed1ng (HDD)<\/h4>\n<p>V\u1ec1 c\u01a1 b\u1ea3n, c\u1ea5u tr\u00fac b\u00ean trong \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng g\u1ed3m c\u00e1c phi\u1ebfn \u0111\u0129a x\u1ebfp ch\u1ed3ng l\u00ean nhau theo tr\u1ee5c \u0111\u1ee9ng. M\u1ed7i phi\u1ebfn \u0111\u0129a chia th\u00e0nh nhi\u1ec1u v\u00f2ng tr\u00f2n \u0111\u1ed3ng t\u00e2m g\u1ecdi l\u00e0 track. M\u1ed7i track c\u0169ng \u0111\u01b0\u1ee3c chia th\u00e0nh nhi\u1ec1u \u0111o\u1ea1n nh\u1ecf g\u1ecdi l\u00e0 sector. C\u00e1c sector tr\u00ean c\u00f9ng track k\u1ebft h\u1ee3p v\u1edbi nhau th\u00e0nh cluster v\u00e0 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u00ean t\u1eebng cluster. Khi c\u00f3 y\u00eau c\u1ea7u truy xu\u1ea5t d\u1eef li\u1ec7u, \u0111\u1ea7u \u0111\u1ecdc\/ghi s\u1ebd di chuy\u1ec3n qua b\u1ec1 m\u1eb7t \u0111\u0129a (theo ph\u01b0\u01a1ng ngang) \u0111\u1ec3 \u0111\u1ecdc ho\u1eb7c ghi d\u1eef li\u1ec7u tr\u00ean m\u1ed7i cluster.<\/p>\n<p><div class=\"image-autosize image-align-none\"><a href=\"\/sites\/default\/files\/images\/2013\/2\/1\/img-1359693810-2.jpg\"  class=\"fancybox\"><img decoding=\"async\" alt=\"\u1ea2nh\" src=\"https:\/\/vtcdn.com\/sites\/default\/files\/imagecache\/med\/images\/2013\/2\/1\/img-1359693810-2.jpg\" \/><\/a><\/p>\n<div class=\"image-caption\">C\u1ea5u tr\u00fac b\u00ean trong \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng.<\/div>\n<\/div>\n<p>Nh\u01b0 v\u1eady, s\u1ed1 v\u00f2ng quay c\u1ee7a phi\u1ebfn \u0111\u0129a (revolution per minute &#8211; rpm) v\u00e0 t\u1ed1c \u0111\u1ed9 di chuy\u1ec3n c\u1ee7a \u0111\u1ea7u \u0111\u1ecdc\/ghi s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn hi\u1ec7u n\u0103ng \u1ed5 c\u1ee9ng. B\u00ean c\u1ea1nh \u0111\u00f3, m\u1ed7i h\u00e3ng \u0111\u1ec1u c\u00f3 nh\u1eefng c\u00f4ng ngh\u1ec7 ri\u00eang nh\u1eb1m c\u1ea3i thi\u1ec7n hi\u1ec7u n\u0103ng, gia t\u0103ng \u0111\u1ed9 b\u1ec1n ho\u1eb7c t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a \u1ed5 c\u1ee9ng trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/p>\n<p>Hi\u1ec7n t\u1ea1i, t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t cao nh\u1ea5t c\u1ee7a \u1ed5 c\u1ee9ng c\u00f3 th\u1ec3 \u0111\u1ea1t 200 MB\/gi\u00e2y v\u00e0 th\u1eddi gian truy c\u1eadp ng\u1eabu nhi\u00ean t\u1eeb 5 \u2013 8 ms. T\u00ednh theo dung l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed (t\u00ednh tr\u00ean m\u1ed7i gigabyte) th\u00ec \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u. H\u1ea7u h\u1ebft \u1ed5 c\u1ee9ng hi\u1ec7n nay s\u1eed d\u1ee5ng giao ti\u1ebfp SATA 3.0 (6 Gb\/gi\u00e2y) v\u00e0 dung l\u01b0\u1ee3ng ch\u1ea1m \u201cm\u1ed1c\u201d 4 TB (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 4.000 GB).<\/p>\n<h4>\u1ed4 t\u0129nh (SSD)<\/h4>\n<p>So v\u1edbi \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng, \u1ed5 t\u0129nh (<em>solid state drive<\/em> hay SSD) c\u00f3 \u01b0u th\u1ebf v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t (\u0111\u1ecdc\/ghi) d\u1eef li\u1ec7u, \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng s\u1ed1c t\u1ed1t h\u01a1n, ho\u1ea1t \u0111\u1ed9ng m\u00e1t h\u01a1n v\u00ec kh\u00f4ng c\u00f3 b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng. Nh\u01b0 v\u1eady d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 t\u1ed1t h\u01a1n khi m\u00e1y t\u00ednh b\u1ecb r\u01a1i hay va ch\u1ea1m.<\/p>\n<p><div class=\"image-autosize image-align-none\"><a href=\"\/sites\/default\/files\/images\/2013\/2\/1\/img-1359693810-3.jpg\"  class=\"fancybox\"><img decoding=\"async\" alt=\"\u1ea2nh\" src=\"https:\/\/vtcdn.com\/sites\/default\/files\/imagecache\/med\/images\/2013\/2\/1\/img-1359693810-3.jpg\" \/><\/a><\/p>\n<div class=\"image-caption\">SSD Vector c\u1ee7a OCZ l\u00e0 m\u1ed9t trong nh\u1eefng \u1ed5 SSD nhanh nh\u1ea5t hi\u1ec7n nay.<\/div>\n<\/div>\n<p>V\u1ec1 c\u00f4ng ngh\u1ec7 b\u1ed9 nh\u1edb, SSD chia l\u00e0m 2 lo\u1ea1i l\u00e0 s\u1eed d\u1ee5ng flash NAND SLC (single level cell) ch\u1ee9a 1 bit d\u1eef li\u1ec7u tr\u00ean m\u1ed7i \u00f4 nh\u1edb v\u00e0 flash NAND MLC (multi level cell) ch\u1ee9a 2 bit ho\u1eb7c nhi\u1ec1u h\u01a1n tr\u00ean m\u1ed7i cell. So v\u1edbi flash SLC th\u00ec MLC c\u00f3 \u0111\u1ed9 b\u1ec1n th\u1ea5p, t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t ch\u1eadm h\u01a1n, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong SSD d\u00f2ng ph\u1ed5 th\u00f4ng trong khi flash NAND SLC c\u00f3 \u0111\u1ed9 b\u1ec1n cao h\u01a1n, t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t nhanh h\u01a1n, s\u1eed d\u1ee5ng trong SSD cao c\u1ea5p.<\/p>\n<p>Ngo\u00e0i ra, c\u00e1c SSD c\u00f2n h\u1ed7 tr\u1ee3 c\u00f4ng ngh\u1ec7 TRIM nh\u1eb1m ng\u0103n ng\u1eeba s\u1ef1 suy gi\u1ea3m t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi sau m\u1ed9t th\u1eddi gian s\u1eed d\u1ee5ng. Tuy nhi\u00ean, c\u0169ng c\u1ea7n l\u01b0u \u00fd c\u00e1c phi\u00ean b\u1ea3n h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u00f3 h\u1ed7 tr\u1ee3 TRIM l\u00e0 Windows 7, Windows 8, Windows 2008 R2, Mac OS X Snow Leopard (10.6.6), Lion (10.7), c\u00e1c phi\u00ean b\u1ea3n OpenSolaris ph\u00e1t h\u00e0nh sau th\u00e1ng 6\/2010 v\u00e0 FreeBSD 8.2.<\/p>\n<p>SSD ph\u1ed5 th\u00f4ng hi\u1ec7n v\u1eabn s\u1eed d\u1ee5ng giao ti\u1ebfp SATA 3.0 (6 Gb\/gi\u00e2y) trong khi SSD cao c\u1ea5p s\u1eed d\u1ee5ng giao ti\u1ebfp PCI Express c\u00f3 t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t d\u1eef li\u1ec7u, \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u00e1ng tin c\u1eady g\u1ea5p nhi\u1ec1u l\u1ea7n SSD ph\u1ed5 th\u00f4ng. T\u1ed1c \u0111\u1ed9 truy xu\u1ea5t d\u1eef li\u1ec7u SSD cao nh\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea1t m\u1ee9c 550 MB\/gi\u00e2y; g\u1ea7n \u0111\u1ea1t ng\u01b0\u1ee1ng t\u1edbi h\u1ea1n 6 Gb\/gi\u00e2y c\u1ee7a giao ti\u1ebfp SATA 3.0, hi\u1ec7u su\u1ea5t \u0111\u1ecdc\/ghi ng\u1eabu nhi\u00ean kho\u1ea3ng 80.000\/65.000 l\u01b0\u1ee3t d\u1eef li\u1ec7u (4 KB) v\u00e0o\/ra m\u1ed7i gi\u00e2y (IOPS).<\/p>\n<p>D\u00f9 gi\u00e1 \u1ed5 <span style=\"text-indent:20px;\">t\u0129nh<\/span> \u0111\u00e3 gi\u1ea3m nhi\u1ec1u trong th\u1eddi gian qua nh\u01b0ng x\u00e9t t\u1ec9 l\u1ec7 gi\u00e1\/dung l\u01b0\u1ee3ng v\u1eabn c\u00f2n r\u1ea5t cao so v\u1edbi \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng. Ngo\u00e0i ra do s\u1eed d\u1ee5ng b\u1ed9 nh\u1edb flash \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u n\u00ean dung l\u01b0\u1ee3ng \u1ed5 th\u1ec3 r\u1eafn c\u00f3 ph\u1ea7n \u201ckhi\u00eam t\u1ed1n\u201d h\u01a1n so v\u1edbi \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng. D\u00f9 c\u00f3 \u0111\u1ed9 b\u1ec1n cao h\u01a1n \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng nh\u01b0ng SSD c\u00f3 th\u1ec3 \u201c\u0111\u1ed9t t\u1eed\u201d m\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u00ec d\u1ea5u hi\u1ec7u b\u00e1o tr\u01b0\u1edbc. Do \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng c\u1ea7n th\u01b0\u1eddng xuy\u00ean sao l\u01b0u nh\u1eefng d\u1eef li\u1ec7u quan tr\u1ecdng, th\u00f4ng tin c\u00e1 nh\u00e2n ph\u00f2ng khi \u1ed5 c\u1ee9ng g\u1eb7p l\u1ed7i.<\/p>\n<h4>\u1ed4 lai (HHD)<\/h4>\n<p><div class=\"image-autosize image-align-none\"><a href=\"\/sites\/default\/files\/images\/2013\/2\/1\/img-1359693810-4.jpg\"  class=\"fancybox\"><img decoding=\"async\" alt=\"\u1ea2nh\" src=\"https:\/\/vtcdn.com\/sites\/default\/files\/imagecache\/med\/images\/2013\/2\/1\/img-1359693810-4.jpg\" \/><\/a><\/div>\n<\/p>\n<p>Xu\u1ea5t hi\u1ec7n trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, \u1ed5 lai (HHD hay <em>hybrid hard drive<\/em>) k\u1ebft h\u1ee3p nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a SSD l\u1eabn HDD; t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t cao \u0111\u1ed3ng th\u1eddi c\u00f3 dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef l\u1edbn v\u00e0 m\u1ee9c gi\u00e1 ph\u00f9 h\u1ee3p v\u1edbi s\u1ed1 \u0111\u00f4ng ng\u01b0\u1eddi d\u00f9ng h\u01a1n.<\/p>\n<p>Ph\u01b0\u01a1ng th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed5 c\u1ee9ng lai c\u0169ng t\u01b0\u01a1ng t\u1ef1 c\u00f4ng ngh\u1ec7 \u0111\u1ed3 h\u1ecda lai \u00e1p d\u1ee5ng tr\u00ean m\u1ed9t s\u1ed1 d\u00f2ng m\u00e1y t\u00ednh c\u00e1 nh\u00e2n (laptop, desktop) hi\u1ec7n nay. Nh\u1eefng d\u1eef li\u1ec7u th\u01b0\u1eddng xuy\u00ean s\u1eed d\u1ee5ng, c\u1ea7n truy xu\u1ea5t nhanh \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong b\u1ed9 nh\u1edb flash trong khi nh\u1eefng d\u1eef li\u1ec7u kh\u00f4ng truy c\u1eadp th\u01b0\u1eddng xuy\u00ean s\u1ebd l\u01b0u gi\u1eef tr\u00ean c\u00e1c phi\u1ebfn \u0111\u0129a c\u1ee7a \u1ed5 c\u1ee9ng. Ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng ph\u1ea3i ch\u1ecdn v\u00e0 x\u00e1c \u0111\u1ecbnh d\u1eef li\u1ec7u n\u00e0o n\u1eb1m \u1edf \u0111\u00e2u m\u00e0 thay v\u00e0o \u0111\u00f3, gi\u1ea3i thu\u1eadt x\u1eed l\u00ed l\u01b0u tr\u1eef trong firmware \u1ed5 c\u1ee9ng s\u1ebd quy\u1ebft \u0111\u1ecbnh d\u1eef li\u1ec7u n\u00e0o l\u01b0u \u1edf b\u1ed9 nh\u1edb flash SSD, d\u1eef li\u1ec7u n\u00e0o l\u01b0u tr\u00ean \u1ed5 c\u1ee9ng.<\/p>\n<p>Momentus XT SSHD c\u1ee7a Seagate d\u00f9ng c\u00f4ng ngh\u1ec7 b\u1ed9 nh\u1edb logic \u0111\u1ec7m Adaptive Memory trong khi Toshiba, Western Digital c\u0169ng c\u00f3 c\u00f4ng ngh\u1ec7 b\u1ed9 nh\u1edb t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng thay v\u00e0o \u0111\u00f3 l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p SSD v\u00e0 HDD trong c\u00f9ng \u1ed5 v\u1eadt l\u00ed. D\u00f9 s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 n\u00e0o th\u00ec gi\u1ea3i thu\u1eadt x\u1eed l\u00ed v\u1eabn \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c theo d\u00f5i m\u1ee9c \u0111\u1ed9 s\u1eed d\u1ee5ng t\u1eadp tin c\u1ee7a h\u1ec7 \u0111i\u1ec1u h\u00e0nh, ph\u1ea7n m\u1ec1m \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh l\u01b0u ch\u00fang \u1edf SSD hay HDD.<\/p>\n<p><div class=\"image-autosize image-align-none\"><a href=\"\/sites\/default\/files\/images\/2013\/2\/1\/img-1359693810-5.jpg\"  class=\"fancybox\"><img decoding=\"async\" alt=\"\u1ea2nh\" src=\"https:\/\/vtcdn.com\/sites\/default\/files\/imagecache\/med\/images\/2013\/2\/1\/img-1359693810-5.jpg\" \/><\/a><\/p>\n<div class=\"image-caption\">Momentus XT, \u1ed5 c\u1ee9ng lai c\u1ee7a Seagate \u00e1p d\u1ee5ng c\u00f4ng ngh\u1ec7 b\u1ed9 nh\u1edb logic \u0111\u1ec7m Adaptive Memory.<\/div>\n<\/div>\n<p>L\u00fac \u0111\u1ea7u khi b\u1ed9 nh\u1edb flash ch\u01b0a c\u00f3 g\u00ec, t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t \u1ed5 c\u1ee9ng lai v\u1eabn t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng, nh\u01b0ng sau th\u1eddi gian s\u1eed d\u1ee5ng, t\u1ed1c \u0111\u1ed9 truy c\u1eadp s\u1ebd d\u1ea7n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, hi\u1ec7u su\u1ea5t n\u00e2ng l\u00ean th\u1ea5y r\u00f5. Th\u1eed nghi\u1ec7m c\u1ee7a PC World M\u1ef9 tr\u00ean \u1ed5 c\u1ee9ng lai Seagate Momentus XT 750 GB v\u1edbi 8 GB SSD cho th\u1ea5y sau 6 l\u1ea7n th\u1eed nghi\u1ec7m, th\u1eddi gian kh\u1edfi \u0111\u1ed9ng h\u1ec7 th\u1ed1ng gi\u1ea3m d\u1ea7n t\u1eeb 35 gi\u00e2y xu\u1ed1ng c\u00f2n 31 gi\u00e2y, \u0111i\u1ec3m WorldBench 7 t\u0103ng t\u1eeb 112 l\u00ean 116 \u0111i\u1ec3m. M\u1ee9c c\u1ea3i thi\u1ec7n th\u1eddi gian kh\u1edfi \u0111\u1ed9ng h\u1ec7 th\u1ed1ng \u0111\u1ea1t 12%, \u0111i\u1ec3m WorldBench 7 t\u0103ng 4%. X\u00e9t v\u1ec1 l\u00e2u d\u00e0i, \u1ed5 lai s\u1ebd d\u1ea7n c\u1ea3i thi\u1ec7n hi\u1ec7u n\u0103ng t\u1ed5ng th\u1ec3 h\u1ec7 th\u1ed1ng trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/p>\n<h4>L\u1ef1a ch\u1ecdn n\u00e0o cho b\u1ea1n<\/h4>\n<p>Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u00ean, x\u00e9t t\u1ec9 l\u1ec7 gi\u1eefa dung l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed th\u00ec \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn h\u1ea5p d\u1eabn. C\u00e1c \u1ed5 c\u1ee9ng dung l\u01b0\u1ee3ng t\u1eeb 500 GB tr\u1edf xu\u1ed1ng l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p v\u1edbi ng\u01b0\u1eddi d\u00f9ng gia \u0111\u00ecnh v\u00e0 v\u0103n ph\u00f2ng cho nhu c\u1ea7u h\u1ecdc t\u1eadp, l\u00e0m vi\u1ec7c v\u00e0 gi\u1ea3i tr\u00ed \u0111\u01a1n gi\u1ea3n. \u1ed4 c\u1ee9ng dung l\u01b0\u1ee3ng h\u00e0ng terabyte tr\u1edf l\u00ean th\u00edch h\u1ee3p cho trung t\u00e2m d\u1eef li\u1ec7u (data center) ho\u1eb7c m\u00e1y t\u00ednh gi\u1ea3i tr\u00ed \u0111a ph\u01b0\u01a1ng ti\u1ec7n (HTPC) c\u1ea7n kh\u00f4ng gian l\u01b0u tr\u1eef l\u1edbn.<\/p>\n<p><div class=\"image-autosize image-align-none\"><a href=\"\/sites\/default\/files\/images\/2013\/2\/1\/img-1359693810-6.jpg\"  class=\"fancybox\"><img decoding=\"async\" alt=\"\u1ea2nh\" src=\"https:\/\/vtcdn.com\/sites\/default\/files\/imagecache\/med\/images\/2013\/2\/1\/img-1359693810-6.jpg\" \/><\/a><\/p>\n<div class=\"image-caption\">Th\u1ecb tr\u01b0\u1eddng SSD lu\u00f4n c\u00f3 s\u1ef1 c\u1ea1nh tranh kh\u1ed1c li\u1ec7t gi\u1eefa c\u00e1c th\u01b0\u01a1ng hi\u1ec7u.<\/div>\n<\/div>\n<p>SSD v\u1edbi \u01b0u th\u1ebf v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng s\u1ed1c t\u1ed1t s\u1ebd th\u00edch h\u1ee3p cho ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng xuy\u00ean di chuy\u1ec3n. Tuy nhi\u00ean, do chi ph\u00ed s\u1ea3n xu\u1ea5t b\u1ed9 nh\u1edb flash kh\u00e1 cao n\u00ean c\u00e1c h\u00e3ng th\u01b0\u1eddng gi\u1edbi h\u1ea1n dung l\u01b0\u1ee3ng SSD \u0111\u1ec3 c\u00f3 gi\u00e1 th\u00e0nh h\u1ee3p l\u00ed. Ch\u1eb3ng h\u1ea1n SSD dung l\u01b0\u1ee3ng 128 GB c\u00f3 gi\u00e1 trung b\u00ecnh kho\u1ea3ng 2,5 tri\u1ec7u \u0111\u1ed3ng, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng m\u1ee9c gi\u00e1 HDD 3,5 inch dung l\u01b0\u1ee3ng 2 TB cho desktop ho\u1eb7c HDD 2,5 inch dung l\u01b0\u1ee3ng 1 TB cho laptop. N\u1ebfu s\u1eed d\u1ee5ng laptop, b\u1ea1n \u0111\u1ecdc n\u00ean ch\u1ecdn SSD dung l\u01b0\u1ee3ng 128 ho\u1eb7c 256 GB t\u00f9y t\u00ednh ch\u1ea5t c\u00f4ng vi\u1ec7c trong khi v\u1edbi desktop, b\u1ea1n n\u00ean d\u00f9ng SSD 128 GB l\u00e0m ph\u00e2n v\u00f9ng h\u1ec7 th\u1ed1ng (ph\u00e2n v\u00f9ng c\u00e0i \u0111\u1eb7t h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 ph\u1ea7n m\u1ec1m) trong khi v\u1eabn s\u1eed d\u1ee5ng \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng \u0111\u1ec3 l\u01b0u d\u1eef li\u1ec7u.<\/p>\n<p>C\u00e1c \u1ed5 c\u1ee9ng lai hi\u1ec7n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo chu\u1ea9n 2,5 inch, ph\u00f9 h\u1ee3p cho m\u00e1y t\u00ednh x\u00e1ch tay v\u00ec s\u1ef1 nh\u1ecf g\u1ecdn, t\u1ed1c \u0111\u1ed9 nhanh h\u01a1n \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng nh\u01b0ng v\u1eabn \u0111\u1ea3m b\u1ea3o dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef l\u1edbn. Seagate, Samsung, Toshiba v\u00e0 Western Digital c\u0169ng \u0111\u00e3 l\u1ea7n l\u01b0\u1ee3t c\u00f4ng b\u1ed1 c\u00e1c m\u1eabu \u1ed5 c\u1ee9ng lai c\u1ee7a h\u00e3ng tuy nhi\u00ean nh\u1eefng s\u1ea3n ph\u1ea9m \u0111\u1ea7u ti\u00ean ch\u1ec9 mang t\u00ednh ch\u1ea5t \u201ctr\u00ecnh di\u1ec5n\u201d, ch\u01b0a \u0111\u01b0\u1ee3c b\u00e1n ch\u00ednh th\u1ee9c t\u1ea1i Vi\u1ec7t Nam.<\/p>\n<p>Theo S\u1ed1 Ho\u00e1<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng truy\u1ec1n th\u1ed1ng (HDD) ng\u00e0y c\u00e0ng l\u1edbn, \u1ed5 t\u0129nh (SSD) th\u00ec \u0111ang d\u1ea7n ph\u1ed5 bi\u1ebfn trong khi \u1ed5 lai (HHD) k\u1ebft h\u1ee3p \u01b0u \u0111i\u1ec3m c\u1ee7a HDD v\u00e0 SSD c\u0169ng h\u1ee9a h\u1eb9n t\u01b0\u01a1ng lai h\u1ea5p d\u1eabn kh\u00f4ng k\u00e9m.<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[189],"class_list":["post-161","post","type-post","status-publish","format-standard","hentry","category-thiet-bi-luu-tru","tag-thiet-bi-luu-tru"],"views":380,"_links":{"self":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/161","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/comments?post=161"}],"version-history":[{"count":0,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/posts\/161\/revisions"}],"wp:attachment":[{"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/media?parent=161"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/categories?post=161"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tapchicntt.com\/rest-api\/wp\/v2\/tags?post=161"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}