{"id":3192,"date":"2025-10-15T02:23:38","date_gmt":"2025-10-15T02:23:38","guid":{"rendered":"https:\/\/nbaem.com\/?p=3192"},"modified":"2025-10-15T02:30:26","modified_gmt":"2025-10-15T02:30:26","slug":"how-do-magnetic-discs-work","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/how-do-magnetic-discs-work\/","title":{"rendered":"C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u0129a t\u1eeb t\u1eeb t\u00ednh"},"content":{"rendered":"<p>B\u1ea1n \u0111\u00e3 t\u1eebng t\u1ef1 h\u1ecfi <strong>c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u0129a t\u1eeb t\u1eeb t\u00ednh<\/strong>\u2014v\u00e0 t\u1ea1i sao ch\u00fang l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a l\u01b0u tr\u1eef d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i? N\u1ebfu b\u1ea1n t\u00f2 m\u00f2 v\u1ec1 khoa h\u1ecdc \u0111\u1eb1ng sau <strong>\u1ed5 c\u1ee9ng<\/strong>, vai tr\u00f2 c\u1ee7a <strong>mi\u1ec1n t\u1eeb<\/strong>, ho\u1eb7c \u0111i\u1ec1u g\u00ec khi\u1ebfn m\u1ed9t \u0111\u0129a quay v\u00e0 l\u01b0u tr\u1eef t\u1ec7p c\u1ee7a b\u1ea1n, b\u1ea1n \u0111ang \u1edf \u0111\u00fang n\u01a1i. Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n s\u1ebd kh\u00e1m ph\u00e1 nh\u1eefng b\u00ed m\u1eadt c\u1ee7a <strong>nguy\u00ean l\u00fd l\u01b0u tr\u1eef t\u1eeb t\u00ednh<\/strong>, kh\u00e1m ph\u00e1 c\u00e1ch nh\u1eefng <strong>l\u1edbp ph\u1ee7 ferromagnetic nh\u1ecf b\u00e9<\/strong> gi\u1eef h\u00e0ng t\u1ef7 bit, v\u00e0 th\u1ea5y t\u1ea1i sao t\u1eeb t\u00ednh v\u1eabn l\u00e0 ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng cho m\u1ecdi th\u1ee9 t\u1eeb laptop \u0111\u1ebfn trung t\u00e2m d\u1eef li\u1ec7u to\u00e0n c\u1ea7u. D\u00f9 b\u1ea1n l\u00e0 sinh vi\u00ean, ng\u01b0\u1eddi \u0111am m\u00ea c\u00f4ng ngh\u1ec7 hay k\u1ef9 s\u01b0, h\u00e3y chu\u1ea9n b\u1ecb cho nh\u1eefng c\u00e2u tr\u1ea3 l\u1eddi r\u00f5 r\u00e0ng v\u00e0 nh\u1eefng hi\u1ec3u bi\u1ebft th\u1ef1c t\u1ebf\u2014c\u00f9ng v\u1edbi c\u00e1c m\u1eb9o chuy\u00ean gia t\u1eeb NBAEM, nh\u00e0 cung c\u1ea5p uy t\u00edn c\u1ee7a Trung Qu\u1ed1c v\u1ec1 <strong>v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/strong>. H\u00e3y \u0111i th\u1eb3ng v\u00e0o th\u1ebf gi\u1edbi b\u00ed \u1ea9n c\u1ee7a \u0111\u0129a t\u1eeb!<\/p>\n<h2>\u0110\u0129a t\u1eeb l\u00e0 g\u00ec? \u0110\u1ecbnh ngh\u0129a c\u01a1 b\u1ea3n<\/h2>\n<div id=\"attachment_3191\" style=\"width: 612px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-3191\" class=\"size-full wp-image-3191\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/How_do_magnetic_discs_work_jNPRFRpAw.webp\" alt=\"\u0111\u0129a t\u1eeb\" width=\"602\" height=\"451\" srcset=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/How_do_magnetic_discs_work_jNPRFRpAw-16x12.webp 16w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/How_do_magnetic_discs_work_jNPRFRpAw-200x150.webp 200w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/How_do_magnetic_discs_work_jNPRFRpAw-300x225.webp 300w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/How_do_magnetic_discs_work_jNPRFRpAw-400x300.webp 400w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/How_do_magnetic_discs_work_jNPRFRpAw-600x450.webp 600w, https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/How_do_magnetic_discs_work_jNPRFRpAw.webp 602w\" sizes=\"(max-width: 602px) 100vw, 602px\" \/><p id=\"caption-attachment-3191\" class=\"wp-caption-text\">\u0111\u0129a t\u1eeb<\/p><\/div>\n<p>B\u1ea1n \u0111\u00e3 t\u1eebng t\u1ef1 h\u1ecfi l\u00e0m th\u1ebf n\u00e0o m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n l\u01b0u tr\u1eef \u1ea3nh, t\u00e0i li\u1ec7u v\u00e0 tr\u00f2 ch\u01a1i ch\u01b0a? \u0110\u0129a t\u1eeb ch\u00ednh l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi. Ch\u00fang l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a b\u1ed9 nh\u1edb ph\u1ee5 trong h\u1ea7u h\u1ebft c\u00e1c m\u00e1y t\u00ednh, s\u1eed d\u1ee5ng khoa h\u1ecdc th\u00f4ng minh \u0111\u1ec3 gi\u1eef d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n an to\u00e0n v\u00e0 s\u1eb5n s\u00e0ng b\u1ea5t c\u1ee9 khi n\u00e0o b\u1ea1n c\u1ea7n.<\/p>\n<h3>\u0110\u0129a t\u1eeb l\u00e0 g\u00ec<\/h3>\n<p>\u0110\u0129a t\u1eeb l\u00e0 m\u1ed9t lo\u1ea1i <strong>thi\u1ebft b\u1ecb l\u01b0u tr\u1eef ph\u1ee5<\/strong>. N\u00f3 s\u1eed d\u1ee5ng c\u00e1c \u0111\u0129a tr\u00f2n ph\u1ee7 l\u1edbp <strong>v\u1eadt li\u1ec7u s\u1eaft t\u1eeb<\/strong>\u2014ngh\u0129 \u0111\u1ebfn oxit s\u1eaft ho\u1eb7c h\u1ee3p kim kh\u00e1c. Nh\u1eefng \u0111\u0129a n\u00e0y quay v\u1edbi t\u1ed1c \u0111\u1ed9 cao trong khi m\u1ed9t <strong>\u0111\u1ea7u \u0111\u1ecdc ghi nh\u1ecf<\/strong> l\u01a1 l\u1eedng ph\u00eda tr\u00ean ch\u00fang, thay \u0111\u1ed5i c\u00e1c mi\u1ec1n t\u1eeb \u0111\u1ec3 l\u01b0u tr\u1eef t\u1ec7p c\u1ee7a b\u1ea1n d\u01b0\u1edbi d\u1ea1ng 1 v\u00e0 0. N\u00f3 gi\u1ed1ng nh\u01b0 m\u1ed9t chi\u1ebfc m\u00e1y h\u00e1t \u0111\u0129a cao c\u1ea5p, nh\u01b0ng d\u00e0nh cho d\u1eef li\u1ec7u.<\/p>\n<p>&nbsp;<\/p>\n<h3>L\u1ecbch s\u1eed ph\u00e1t tri\u1ec3n c\u1ee7a \u0110\u0129a t\u1eeb t\u1eeb t\u00ednh<\/h3>\n<p>C\u00e2u chuy\u1ec7n b\u1eaft \u0111\u1ea7u v\u00e0o n\u0103m 1956 v\u1edbi RAMAC c\u1ee7a IBM \u2014 \u1ed5 \u0111\u0129a c\u1ee9ng \u0111\u1ea7u ti\u00ean. N\u00f3 c\u00f3 k\u00edch th\u01b0\u1edbc b\u1eb1ng m\u1ed9t chi\u1ebfc t\u1ee7 l\u1ea1nh v\u00e0 ch\u1ec9 l\u01b0u tr\u1eef \u0111\u01b0\u1ee3c v\u00e0i megabyte. Nh\u1ea3y \u0111\u1ebfn ng\u00e0y nay: <strong>\u1ed5 \u0111\u0129a c\u1ee9ng (HDD)<\/strong> v\u1eeba v\u1eb7n trong l\u00f2ng b\u00e0n tay v\u00e0 c\u00f3 th\u1ec3 ch\u1ee9a terabyte d\u1eef li\u1ec7u. <strong>\u0111\u0129a m\u1ec1m<\/strong> tr\u01b0\u1edbc \u0111\u00e2y r\u1ea5t ph\u1ed5 bi\u1ebfn \u0111\u1ec3 di chuy\u1ec3n t\u1eadp tin, nh\u01b0ng ch\u00fang ch\u1ec9 ch\u1ee9a v\u00e0i megabyte v\u00e0 hi\u1ec7n nay h\u1ea7u nh\u01b0 \u0111\u00e3 tr\u1edf th\u00e0nh qu\u00e1 kh\u1ee9.<\/p>\n<ul>\n<li><strong>\u1ed4 \u0111\u0129a c\u1ee9ng:<\/strong> Dung l\u01b0\u1ee3ng l\u1edbn, t\u1ed1c \u0111\u1ed9 nhanh, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho l\u01b0u tr\u1eef l\u00e2u d\u00e0i<\/li>\n<li><strong>\u0110\u0129a m\u1ec1m:<\/strong> Di \u0111\u1ed9ng, dung l\u01b0\u1ee3ng nh\u1ecf, ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e1 kh\u1ee9<\/li>\n<\/ul>\n<h3>T\u1ea1i sao \u0110\u0129a t\u1eeb l\u1ea1i quan tr\u1ecdng<\/h3>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao \u0111\u0129a t\u1eeb v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u \u0111\u1ec3 l\u01b0u tr\u1eef:<\/p>\n<ul>\n<li><strong>Dung l\u01b0\u1ee3ng cao ph\u00f9 h\u1ee3p v\u1edbi t\u00fai ti\u1ec1n:<\/strong> B\u1ea1n c\u00f3 nhi\u1ec1u kh\u00f4ng gian l\u01b0u tr\u1eef so v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn kh\u00e1c<\/li>\n<li><strong>\u0110\u00e1ng tin c\u1eady:<\/strong> Ch\u00fang gi\u1eef d\u1eef li\u1ec7u an to\u00e0n ngay c\u1ea3 khi m\u1ea5t \u0111i\u1ec7n (<strong>phi bi\u1ebfn \u0111\u1ed5i<\/strong>)<\/li>\n<li><strong>Thi\u1ebft y\u1ebfu:<\/strong> C\u00f3 m\u1eb7t trong m\u1ecdi th\u1ee9 t\u1eeb m\u00e1y t\u00ednh c\u00e1 nh\u00e2n \u0111\u1ebfn trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 h\u1ec7 th\u1ed1ng sao l\u01b0u<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, \u0111\u0129a t\u1eeb k\u1ebft h\u1ee3p <strong>c\u01a1 h\u1ecdc \u1ed5 c\u1ee9ng<\/strong> v\u00e0 <strong>nguy\u00ean l\u00fd l\u01b0u tr\u1eef t\u1eeb t\u00ednh<\/strong> \u0111\u1ec3 l\u00e0m cho vi\u1ec7c l\u01b0u tr\u1eef l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u tr\u1edf n\u00ean d\u1ec5 d\u00e0ng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed. D\u00f9 b\u1ea1n \u0111ang l\u01b0u \u1ea3nh gia \u0111\u00ecnh hay \u0111i\u1ec1u h\u00e0nh m\u1ed9t doanh nghi\u1ec7p, c\u00e1c thi\u1ebft b\u1ecb n\u00e0y l\u00e0 ph\u1ea7n quan tr\u1ecdng c\u1ee7a cu\u1ed9c s\u1ed1ng k\u1ef9 thu\u1eadt s\u1ed1 hi\u1ec7n \u0111\u1ea1i.<\/p>\n<h2>Khoa h\u1ecdc \u0111\u1eb1ng sau \u0111\u0129a t\u1eeb t\u00ednh C\u00e1ch Magnetism L\u01b0u tr\u1eef D\u1eef li\u1ec7u<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/Magnetic_Data_Storage_Physics_and_Materials_bRCK51.webp\" alt=\"V\u1eadt l\u00fd v\u00e0 V\u1eadt li\u1ec7u L\u01b0u tr\u1eef D\u1eef li\u1ec7u T\u1eeb t\u00ednh\" \/><\/p>\n<p>\u0110\u0129a t\u1eeb ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng t\u1eeb t\u00ednh \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch m\u1ecdi th\u1ee9 h\u1ee3p l\u1ea1i:<\/p>\n<ul>\n<li><strong>Mi\u1ec1n t\u1eeb:<\/strong> M\u1ed7i \u0111\u0129a trong \u1ed5 c\u1ee9ng \u0111\u01b0\u1ee3c ph\u1ee7 m\u1ed9t l\u1edbp m\u1ecfng v\u1eadt li\u1ec7u ferromagnetic, nh\u01b0 oxit s\u1eaft. B\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c v\u00f9ng nh\u1ecf g\u1ecdi l\u00e0 mi\u1ec1n t\u1eeb. M\u1ed7i mi\u1ec1n c\u00f3 th\u1ec3 b\u1ecb magnet h\u00f3a theo m\u1ed9t trong hai h\u01b0\u1edbng, \u0111\u1ea1i di\u1ec7n cho d\u1eef li\u1ec7u nh\u1ecb ph\u00e2n \u2014 ho\u1eb7c l\u00e0 \u201c0\u201d ho\u1eb7c l\u00e0 \u201c1\u201d.<\/li>\n<li><strong>L\u01b0u tr\u1eef nh\u1ecb ph\u00e2n:<\/strong> Khi b\u1ea1n l\u01b0u m\u1ed9t t\u1ec7p, \u0111\u1ea7u \u0111\u1ecdc ghi thay \u0111\u1ed5i h\u01b0\u1edbng c\u1ee7a c\u00e1c mi\u1ec1n n\u00e0y, m\u00e3 h\u00f3a d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n th\u00e0nh h\u00e0ng tri\u1ec7u bit t\u1eeb t\u00ednh nh\u1ecf b\u00e9.<\/li>\n<li><strong>Hysteresis:<\/strong> V\u1eadt li\u1ec7u t\u1eeb gi\u1eef tr\u1ea1ng th\u00e1i c\u1ee7a n\u00f3 ngay c\u1ea3 khi ngu\u1ed3n \u0111i\u1ec7n t\u1eaft. T\u00ednh ch\u1ea5t n\u00e0y, g\u1ecdi l\u00e0 hysteresis, l\u00e0 l\u00fd do gi\u1eef cho c\u00e1c t\u1ec7p c\u1ee7a b\u1ea1n an to\u00e0n cho \u0111\u1ebfn khi b\u1ea1n quy\u1ebft \u0111\u1ecbnh thay \u0111\u1ed5i ho\u1eb7c x\u00f3a ch\u00fang.<\/li>\n<li><strong>L\u1edbp ph\u1ee7 t\u1eeb t\u00ednh:<\/strong> H\u1ea7u h\u1ebft c\u00e1c \u0111\u0129a trong \u1ed5 c\u1ee9ng s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 oxit s\u1eaft ho\u1eb7c h\u1ee3p kim m\u1edbi h\u01a1n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ec1n v\u00e0 gi\u1eef d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady. C\u00e1c l\u1edbp ph\u1ee7 n\u00e0y \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng gi\u1eef \u0111i\u1ec7n t\u00edch t\u1eeb v\u00e0 ch\u1ed1ng m\u00e0i m\u00f2n.<\/li>\n<li><strong>C\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb:<\/strong> \u0110\u1ea7u \u0111\u1ecdc ghi s\u1eed d\u1ee5ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb \u2014 gi\u1ed1ng nh\u01b0 \u0111\u1ecbnh lu\u1eadt Faraday m\u00f4 t\u1ea3 \u2014 \u0111\u1ec3 \u0111\u1ecdc v\u00e0 ghi d\u1eef li\u1ec7u. Khi \u0111\u1ea7u qua v\u00f9ng mi\u1ec1n t\u1eeb, n\u00f3 c\u1ea3m nh\u1eadn s\u1ef1 thay \u0111\u1ed5i trong tr\u01b0\u1eddng t\u1eeb (\u0111\u1ea3o chi\u1ec1u flux) v\u00e0 chuy\u1ec3n \u0111\u1ed5i ch\u00fang th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n m\u00e0 m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 hi\u1ec3u.<\/li>\n<\/ul>\n<p><strong>Th\u00f4ng tin nhanh cho kh\u00e1ch h\u00e0ng:<\/strong><\/p>\n<ul>\n<li>\u0110\u0129a t\u1eeb \u0111\u01b0\u1ee3c tin c\u1eady \u0111\u1ec3 l\u01b0u tr\u1eef m\u1ecdi th\u1ee9 t\u1eeb \u1ea3nh gia \u0111\u00ecnh \u0111\u1ebfn c\u00e1c t\u1ec7p doanh nghi\u1ec7p quan tr\u1ecdng.<\/li>\n<li>T\u00ednh ch\u1ea5t kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u c\u1ee7a ch\u00fang c\u00f3 ngh\u0129a l\u00e0 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n v\u1eabn c\u00f2n \u0111\u00f3, ngay c\u1ea3 khi m\u00e1y t\u00ednh t\u1eaft.<\/li>\n<li>C\u00e1c ti\u1ebfn b\u1ed9 trong l\u01b0u tr\u1eef t\u1eeb t\u00ednh, nh\u01b0 ghi theo ph\u01b0\u01a1ng vu\u00f4ng g\u00f3c, ti\u1ebfp t\u1ee5c th\u00fac \u0111\u1ea9y dung l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 tin c\u1eady cho ng\u01b0\u1eddi d\u00f9ng to\u00e0n c\u1ea7u.<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, \u0111\u0129a t\u1eeb s\u1eed d\u1ee5ng khoa h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh \u0111\u1ec3 gi\u1eef d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n an to\u00e0n, b\u1ea3o m\u1eadt v\u00e0 truy c\u1eadp d\u1ec5 d\u00e0ng b\u1ea5t c\u1ee9 khi n\u00e0o b\u1ea1n c\u1ea7n.<\/p>\n<h2>C\u1ea5u t\u1ea1o c\u1ee7a m\u1ed9t \u1ed5 \u0111\u0129a \u0111\u0129a t\u1eeb b\u00ean trong c\u01a1 ch\u1ebf<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/Hard_disk_drive_internal_structure_and_components_.webp\" alt=\"C\u1ea5u tr\u00fac b\u00ean trong v\u00e0 th\u00e0nh ph\u1ea7n c\u1ee7a \u1ed5 c\u1ee9ng\" \/><\/p>\n<p>H\u00e3y ph\u00e2n t\u00edch c\u00e1ch m\u1ed9t \u1ed5 \u0111\u0129a \u0111\u0129a t\u1eeb t\u00ednh \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u00e0 ho\u1ea1t \u0111\u1ed9ng b\u00ean trong. C\u01a1 ch\u1ebf l\u00e0 y\u1ebfu t\u1ed1 l\u00e0m cho \u1ed5 c\u1ee9ng (HDD) \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 l\u01b0u tr\u1eef t\u1ea5t c\u1ea3 c\u00e1c t\u1ec7p, h\u00ecnh \u1ea3nh v\u00e0 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n.<\/p>\n<h3>L\u1eafp r\u00e1p v\u00e0 C\u1ea5u tr\u00fac \u0110\u0129a quay<\/h3>\n<ul>\n<li><strong>\u0110\u0129a quay:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c \u0111\u0129a ph\u1eb3ng, tr\u00f2n \u0111\u01b0\u1ee3c x\u1ebfp ch\u1ed3ng b\u00ean trong \u1ed5 \u0111\u0129a. M\u1ed7i \u0111\u0129a \u0111\u01b0\u1ee3c ph\u1ee7 m\u1ed9t l\u1edbp m\u1ecfng v\u1eadt li\u1ec7u t\u1eeb t\u00ednh \u2014 th\u01b0\u1eddng l\u00e0 oxit s\u1eaft ho\u1eb7c h\u1ee3p kim t\u01b0\u01a1ng t\u1ef1.<\/li>\n<li><strong>C\u00e1c l\u1edbp:<\/strong> C\u00e1c \u0111\u0129a c\u00f3 nhi\u1ec1u l\u1edbp \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u1ec1n, bao g\u1ed3m l\u1edbp ph\u1ee7 t\u1eeb t\u00ednh v\u00e0 c\u00e1c b\u1ec1 m\u1eb7t b\u1ea3o v\u1ec7.<\/li>\n<li><strong>Ch\u1ed3ng \u0111\u0129a nhi\u1ec1u \u0111\u0129a:<\/strong> H\u1ea7u h\u1ebft c\u00e1c \u1ed5 c\u1ee9ng hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng nhi\u1ec1u \u0111\u0129a x\u1ebfp ch\u1ed3ng l\u00ean nhau. Nhi\u1ec1u \u0111\u0129a h\u01a1n c\u00f3 ngh\u0129a l\u00e0 nhi\u1ec1u dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef h\u01a1n.<\/li>\n<\/ul>\n<h3>C\u00f4ng ngh\u1ec7 \u0110\u1ea7u \u0111\u1ecdc Ghi<\/h3>\n<ul>\n<li><strong>\u0110\u1ea7u \u0111\u1ecdc Ghi:<\/strong> Nh\u1eefng thi\u1ebft b\u1ecb nh\u1ecf b\u00e9 n\u00e0y n\u1ed5i tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a t\u1eebng \u0111\u0129a. C\u00e1c \u0111\u1ea7u s\u1eed d\u1ee5ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb \u0111\u1ec3 ghi d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i t\u1eeb h\u00f3a c\u1ee7a b\u1ec1 m\u1eb7t \u0111\u0129a, v\u00e0 \u0111\u1ecdc d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch c\u1ea3m nh\u1eadn s\u1ef1 thay \u0111\u1ed5i c\u1ee7a d\u00f2ng t\u1eeb tr\u01b0\u1eddng.<\/li>\n<li><strong>\u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u0110\u1ea7u:<\/strong> C\u00e1c \u0111\u1ea7u di chuy\u1ec3n v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c tuy\u1ec7t v\u1eddi, nh\u1edd v\u00e0o h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ti\u00ean ti\u1ebfn.<\/li>\n<\/ul>\n<h3>C\u00e1nh tay C\u01a1 c\u1ea5u v\u00e0 \u0110\u1ed9ng c\u01a1 Tr\u1ee5c ch\u00ednh<\/h3>\n<ul>\n<li><strong>C\u00e1nh tay C\u01a1 c\u1ea5u:<\/strong> Ph\u1ea7n n\u00e0y di chuy\u1ec3n c\u00e1c \u0111\u1ea7u \u0111\u1ecdc ghi qua c\u00e1c \u0111\u0129a quay. N\u00f3 nhanh v\u00e0 ch\u00ednh x\u00e1c, cho ph\u00e9p c\u00e1c \u0111\u1ea7u ti\u1ebfp c\u1eadn b\u1ea5t k\u1ef3 ph\u1ea7n n\u00e0o c\u1ee7a \u0111\u0129a m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/li>\n<li><strong>\u0110\u1ed9ng c\u01a1 Tr\u1ee5c ch\u00ednh:<\/strong> \u0110\u1ed9ng c\u01a1 n\u00e0y quay c\u00e1c \u0111\u0129a v\u1edbi t\u1ed1c \u0111\u1ed9 cao \u2014 th\u01b0\u1eddng l\u00e0 5.400 ho\u1eb7c 7.200 v\u00f2ng\/ph\u00fat (RPM) trong c\u00e1c \u1ed5 \u0111\u0129a d\u00e0nh cho ng\u01b0\u1eddi ti\u00eau d\u00f9ng. Quay nhanh h\u01a1n c\u00f3 ngh\u0129a l\u00e0 truy c\u1eadp d\u1eef li\u1ec7u nhanh h\u01a1n.<\/li>\n<\/ul>\n<h3>T\u1ed5 ch\u1ee9c \u0110\u01b0\u1eddng v\u00e0 Sector<\/h3>\n<ul>\n<li><strong>\u0110\u01b0\u1eddng:<\/strong> D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong c\u00e1c v\u00f2ng tr\u00f2n \u0111\u1ed3ng t\u00e2m g\u1ecdi l\u00e0 \u0111\u01b0\u1eddng ray tr\u00ean m\u1ed7i \u0111\u0129a.<\/li>\n<li><strong>Ng\u00e0nh:<\/strong> M\u1ed7i \u0111\u01b0\u1eddng ray \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c ng\u00e0nh, l\u00e0 \u0111\u01a1n v\u1ecb l\u01b0u tr\u1eef nh\u1ecf nh\u1ea5t cho c\u00e1c t\u1eadp tin.<\/li>\n<li><strong>Tr\u1ee5c:<\/strong> M\u1ed9t tr\u1ee5c l\u00e0 nh\u00f3m c\u00e1c \u0111\u01b0\u1eddng ray x\u1ebfp ch\u1ed3ng l\u00ean nhau theo chi\u1ec1u d\u1ecdc qua t\u1ea5t c\u1ea3 c\u00e1c \u0111\u0129a, gi\u00fap \u0111\u1ea7u \u0111\u1ecdc truy c\u1eadp d\u1eef li\u1ec7u li\u00ean quan m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/li>\n<li><strong>\u0110\u01a1n v\u1ecb d\u1eef li\u1ec7u:<\/strong> Vi\u1ec7c t\u1ed5 ch\u1ee9c th\u00e0nh c\u00e1c \u0111\u01b0\u1eddng ray, ng\u00e0nh v\u00e0 tr\u1ee5c gi\u00fap \u1ed5 c\u1ee9ng qu\u1ea3n l\u00fd t\u1eadp tin hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1eef th\u1eddi gian truy c\u1eadp th\u1ea5p.<\/li>\n<\/ul>\n<p><strong>T\u00f3m l\u1ea1i:<\/strong> C\u01a1 ch\u1ebf b\u00ean trong \u1ed5 \u0111\u0129a t\u1eeb t\u00ednh\u2014c\u00e1c \u0111\u0129a, \u0111\u1ea7u \u0111\u1ecdc, \u0111\u1ed9ng c\u01a1 v\u00e0 c\u00e1ch b\u1ed1 tr\u00ed d\u1eef li\u1ec7u th\u00f4ng minh\u2014l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 gi\u00fap c\u00e1c \u1ed5 n\u00e0y cung c\u1ea5p b\u1ed9 nh\u1edb ph\u1ee5 dung l\u01b0\u1ee3ng l\u1edbn, \u0111\u00e1ng tin c\u1eady v\u1edbi m\u1ee9c gi\u00e1 ph\u00f9 h\u1ee3p cho kh\u00e1ch h\u00e0ng h\u00e0ng ng\u00e0y t\u1ea1i Vi\u1ec7t Nam.<\/p>\n<h2>C\u00e1c b\u01b0\u1edbc \u0111\u1ecdc v\u00e0 ghi d\u1eef li\u1ec7u tr\u00ean \u0111\u0129a t\u1eeb t\u1eeb t\u00ednh<\/h2>\n<p>H\u00e3y ph\u00e2n t\u00edch c\u00e1ch c\u00e1c \u0111\u0129a t\u1eeb t\u00ednh th\u1ef1c s\u1ef1 x\u1eed l\u00fd d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. D\u00f9 l\u00e0 \u1ed5 c\u1ee9ng (HDD) trong m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n ho\u1eb7c \u0111\u0129a m\u1ec1m c\u0169, c\u00e1ch ch\u00fang \u0111\u1ecdc v\u00e0 ghi kh\u00e1 gi\u1ed1ng nhau, ch\u1ec9 kh\u00e1c v\u1ec1 m\u1ee9c \u0111\u1ed9 c\u00f4ng ngh\u1ec7.<\/p>\n<h3>Kh\u1edfi t\u1ea1o v\u00e0 Hi\u1ec7u ch\u1ec9nh \u0110\u1ea7u \u0111\u1ecdc<\/h3>\n<ul>\n<li>Khi b\u1ea1n b\u1eadt m\u00e1y t\u00ednh, \u0111\u0129a quay v\u00e0 c\u00e1c \u0111\u1ea7u \u0111\u1ecdc ghi hi\u1ec7u ch\u1ec9nh.<\/li>\n<li>C\u1ea7n c\u00e1nh tay truy\u1ec1n \u0111\u1ed9ng di chuy\u1ec3n c\u00e1c \u0111\u1ea7u \u0111\u1ebfn v\u1ecb tr\u00ed \u201c\u0111\u1ea7u ra\u201d \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ecdi th\u1ee9 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u0111\u0129a.<\/li>\n<li>B\u01b0\u1edbc n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 truy c\u1eadp d\u1eef li\u1ec7u ch\u00ednh x\u00e1c v\u00e0 ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng l\u1edbp ph\u1ee7 ferromagnetic tr\u00ean \u0111\u0129a.<\/li>\n<\/ul>\n<h3>Ghi d\u1eef li\u1ec7u, c\u0103n ch\u1ec9nh v\u00f9ng d\u1eef li\u1ec7u v\u00e0 s\u1eeda l\u1ed7i<\/h3>\n<ul>\n<li>\u0110\u1ec3 ghi d\u1eef li\u1ec7u, \u0111\u1ea7u \u0111\u1ecdc t\u1ea1o ra m\u1ed9t tr\u01b0\u1eddng t\u1eeb \u0111\u1ec3 \u0111\u1ea3o chi\u1ec1u c\u00e1c v\u00f9ng nh\u1ecf g\u1ecdi l\u00e0 mi\u1ec1n t\u1eeb tr\u00ean \u0111\u0129a.<\/li>\n<li>M\u1ed7i mi\u1ec1n \u0111\u1ea1i di\u1ec7n cho m\u1ed9t bit\u2014ho\u1eb7c l\u00e0 0 ho\u1eb7c l\u00e0 1\u2014d\u1ef1a tr\u00ean s\u1ef1 ph\u00e2n c\u1ef1c c\u1ee7a mi\u1ec1n d\u1eef li\u1ec7u.<\/li>\n<li>C\u00e1c \u1ed5 \u0111\u0129a hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng m\u00e3 s\u1eeda l\u1ed7i \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 s\u1eeda l\u1ed7i trong qu\u00e1 tr\u00ecnh ghi, gi\u1eef cho t\u1eadp tin c\u1ee7a b\u1ea1n an to\u00e0n.<\/li>\n<\/ul>\n<h3>\u0110\u1ecdc d\u1eef li\u1ec7u, \u0111\u1ea3o chi\u1ec1u d\u00f2ng t\u1eeb v\u00e0 gi\u1ea3i m\u00e3 t\u00edn hi\u1ec7u<\/h3>\n<ul>\n<li>Khi \u0111\u1ecdc, \u0111\u1ea7u \u0111\u1ecdc ph\u00e1t hi\u1ec7n c\u00e1c thay \u0111\u1ed5i (\u0111\u1ea3o chi\u1ec1u flux) trong tr\u01b0\u1eddng t\u1eeb khi \u0111\u0129a quay.<\/li>\n<li>Nh\u1eefng thay \u0111\u1ed5i n\u00e0y \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n, sau \u0111\u00f3 \u0111\u01b0\u1ee3c gi\u1ea3i m\u00e3 tr\u1edf l\u1ea1i th\u00e0nh d\u1eef li\u1ec7u nh\u1ecb ph\u00e2n.<\/li>\n<li>Qu\u00e1 tr\u00ecnh d\u1ef1a tr\u00ean m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u \u0111i\u1ec7n t\u1eeb ch\u00ednh x\u00e1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady.<\/li>\n<\/ul>\n<h3>Ph\u01b0\u01a1ng ph\u00e1p truy c\u1eadp Ng\u1eabu nhi\u00ean so v\u1edbi Theo th\u1ee9 t\u1ef1<\/h3>\n<ul>\n<li><strong>Truy c\u1eadp ng\u1eabu nhi\u00ean:<\/strong> \u0110\u1ea7u \u0111\u1ecdc c\u00f3 th\u1ec3 nh\u1ea3y \u0111\u1ebfn b\u1ea5t k\u1ef3 v\u1ecb tr\u00ed n\u00e0o tr\u00ean \u0111\u0129a, r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 m\u1edf t\u1ec7p ho\u1eb7c ch\u1ea1y ph\u1ea7n m\u1ec1m.<\/li>\n<li><strong>Truy c\u1eadp theo th\u1ee9 t\u1ef1:<\/strong> D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1ecdc theo th\u1ee9 t\u1ef1, ph\u00f9 h\u1ee3p cho c\u00e1c chuy\u1ec3n \u0111\u1ed5i l\u1edbn nh\u01b0 sao l\u01b0u d\u1eef li\u1ec7u.<\/li>\n<li>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ed5 c\u1ee9ng v\u00e0 b\u1ed1 tr\u00ed c\u00e1c \u0111\u01b0\u1eddng ray v\u00e0 sector tr\u00ean \u0111\u0129a \u0111\u00f3ng vai tr\u00f2 l\u1edbn trong vi\u1ec7c v\u1eadn h\u00e0nh nhanh v\u00e0 m\u01b0\u1ee3t m\u00e0 c\u1ee7a c\u00e1c ho\u1ea1t \u0111\u1ed9ng n\u00e0y.<\/li>\n<\/ul>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t T\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u v\u00e0 \u0110\u1ed9 tr\u1ec5<\/h3>\n<ul>\n<li><strong>T\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u:<\/strong> Nhanh ch\u00f3ng d\u1eef li\u1ec7u di chuy\u1ec3n t\u1eeb \u0111\u0129a \u0111\u1ebfn m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n nh\u01b0 th\u1ebf n\u00e0o.<\/li>\n<li><strong>\u0110\u1ed9 tr\u1ec5:<\/strong> Th\u1eddi gian \u0111\u1ec3 \u0111\u1ea7u \u0111\u1ecdc t\u00ecm \u0111\u00fang v\u1ecb tr\u00ed tr\u00ean \u0111\u0129a.<\/li>\n<li>T\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u cao h\u01a1n v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1ea5p h\u01a1n \u0111\u1ed3ng ngh\u0129a v\u1edbi hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n, \u0111\u1eb7c bi\u1ec7t cho c\u00e1c t\u00e1c v\u1ee5 \u0111\u00f2i h\u1ecfi cao nh\u01b0 ch\u01a1i game ho\u1eb7c ch\u1ec9nh s\u1eeda video.<\/li>\n<\/ul>\n<p>B\u1ea1n mu\u1ed1n t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c mi\u1ec1n t\u1eeb t\u00ednh? Xem h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/nbaem.com\/vi\/what-is-magnetic-moment\/\" target=\"_blank\" rel=\"noopener\"><strong><span style=\"color: #ff6600;\">\u0111i\u1ec3m t\u1eeb t\u00ednh<\/span><\/strong><\/a> \u0111\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 khoa h\u1ecdc \u0111\u1eb1ng sau l\u01b0u tr\u1eef t\u1eeb t\u00ednh.<\/p>\n<p>T\u00f3m l\u1ea1i, \u0111\u0129a t\u1eeb t\u00ednh s\u1eed d\u1ee5ng c\u01a1 ch\u1ebf ch\u00ednh x\u00e1c v\u00e0 v\u1eadt l\u00fd th\u00f4ng minh \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 truy xu\u1ea5t d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady v\u00e0 nhanh ch\u00f3ng. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang \u0111\u00e3 tr\u1edf th\u00e0nh thi\u1ebft b\u1ecb ph\u1ed5 bi\u1ebfn trong m\u1ecdi l\u0129nh v\u1ef1c t\u1eeb m\u00e1y ch\u1ee7 doanh nghi\u1ec7p \u0111\u1ebfn m\u00e1y t\u00ednh gia \u0111\u00ecnh.<\/p>\n<h2>\u01afu \u0111i\u1ec3m, H\u1ea1n ch\u1ebf v\u00e0 \u1ee8ng d\u1ee5ng Th\u1ef1c t\u1ebf c\u1ee7a \u0110\u0129a t\u1eeb t\u00ednh<\/h2>\n<h3>T\u1ea1i sao \u0110\u0129a t\u1eeb Magnet v\u1eabn c\u00f2n ph\u00f9 h\u1ee3p<\/h3>\n<p>\u0110\u0129a t\u1eeb magnet\u2014nh\u01b0 \u1ed5 c\u1ee9ng HDD v\u00e0 th\u1eadm ch\u00ed c\u1ea3 \u0111\u0129a m\u1ec1m c\u0169\u2014l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong th\u1ebf gi\u1edbi l\u01b0u tr\u1eef d\u1eef li\u1ec7u. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang quan tr\u1ecdng:<\/p>\n<p><strong>\u01afu \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li><strong>L\u01b0u tr\u1eef gi\u00e1 c\u1ea3 ph\u1ea3i ch\u0103ng:<\/strong> \u0110\u0129a t\u1eeb magnet cung c\u1ea5p nhi\u1ec1u kh\u00f4ng gian l\u01b0u tr\u1eef v\u1edbi s\u1ed1 ti\u1ec1n b\u1ea1n b\u1ecf ra. \u0110i\u1ec1u n\u00e0y l\u00e0m cho ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn ho\u00e0n h\u1ea3o \u0111\u1ec3 l\u01b0u tr\u1eef h\u00e0ng t\u1ea5n t\u1ec7p, h\u00ecnh \u1ea3nh v\u00e0 video m\u00e0 kh\u00f4ng t\u1ed1n k\u00e9m qu\u00e1 nhi\u1ec1u.<\/li>\n<li><strong>Dung l\u01b0\u1ee3ng l\u1edbn:<\/strong> C\u00e1c \u1ed5 HDD hi\u1ec7n \u0111\u1ea1i c\u00f3 th\u1ec3 l\u01b0u tr\u1eef h\u00e0ng terabyte d\u1eef li\u1ec7u, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho c\u1ea3 ng\u01b0\u1eddi d\u00f9ng gia \u0111\u00ecnh v\u00e0 doanh nghi\u1ec7p l\u1edbn.<\/li>\n<li><strong>Kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u khi t\u1eaft ngu\u1ed3n:<\/strong> D\u1eef li\u1ec7u v\u1eabn gi\u1eef nguy\u00ean v\u1ecb tr\u00ed ngay c\u1ea3 khi m\u1ea5t \u0111i\u1ec7n, v\u00ec v\u1eady b\u1ea1n kh\u00f4ng lo m\u1ea5t t\u1ec7p \u0111\u1ed9t ng\u1ed9t.<\/li>\n<li><strong>T\u01b0\u01a1ng th\u00edch r\u1ed9ng r\u00e3i:<\/strong> H\u1ea7u h\u1ebft c\u00e1c m\u00e1y t\u00ednh v\u00e0 m\u00e1y ch\u1ee7 \u0111\u1ec1u c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u0129a t\u1eeb magnet, v\u00ec v\u1eady ch\u00fang l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n \u0111\u1ec3 n\u00e2ng c\u1ea5p v\u00e0 sao l\u01b0u d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<h3>Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a \u0110\u0129a t\u1eeb Magnet<\/h3>\n<p>C\u00f3 m\u1ed9t v\u00e0i \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd n\u1ebfu b\u1ea1n \u0111ang xem x\u00e9t l\u01b0u tr\u1eef b\u1eb1ng \u0111\u0129a t\u1eeb magnet:<\/p>\n<ul>\n<li><strong>M\u00e0i m\u00f2n c\u01a1 h\u1ecdc:<\/strong> V\u00ec c\u00e1c \u1ed5 n\u00e0y c\u00f3 c\u00e1c b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng (nh\u01b0 \u0111\u0129a quay v\u00e0 tay actuator), ch\u00fang c\u00f3 th\u1ec3 b\u1ecb m\u00f2n theo th\u1eddi gian.<\/li>\n<li><strong>T\u1ed1c \u0111\u1ed9:<\/strong> \u0110\u0129a t\u1eeb magnet ch\u1eadm h\u01a1n so v\u1edbi \u1ed5 SSD khi \u0111\u1ecdc v\u00e0 ghi d\u1eef li\u1ec7u.<\/li>\n<li><strong>D\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng:<\/strong> Ch\u00fang nh\u1ea1y c\u1ea3m v\u1edbi r\u01a1i, va \u0111\u1eadp v\u00e0 c\u1ea3 t\u1eeb tr\u01b0\u1eddng m\u1ea1nh. H\u01b0 h\u1ecfng v\u1eadt l\u00fd ho\u1eb7c t\u1eeb tr\u01b0\u1eddng c\u00f3 th\u1ec3 g\u00e2y m\u1ea5t d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<h3>C\u00e1ch \u0111\u0129a t\u1eeb magnet \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ng\u00e0y nay<\/h3>\n<p>\u0110\u0129a t\u1eeb t\u1eeb t\u00ednh xu\u1ea5t hi\u1ec7n kh\u1eafp n\u01a1i, \u0111\u1eb7c bi\u1ec7t trong khu v\u1ef1c c\u00f3 nhu c\u1ea7u l\u01b0u tr\u1eef d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn:<\/p>\n<ul>\n<li><strong>Trung t\u00e2m d\u1eef li\u1ec7u:<\/strong> Ch\u00fang cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho l\u01b0u tr\u1eef \u0111\u00e1m m\u00e2y, d\u1ecbch v\u1ee5 ph\u00e1t tr\u1ef1c tuy\u1ebfn v\u00e0 sao l\u01b0u doanh nghi\u1ec7p nh\u1edd v\u00e0o chi ph\u00ed th\u1ea5p v\u00e0 dung l\u01b0\u1ee3ng cao.<\/li>\n<li><strong>M\u00e1y t\u00ednh c\u00e1 nh\u00e2n:<\/strong> Nhi\u1ec1u m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n v\u00e0 m\u1ed9t s\u1ed1 laptop v\u1eabn s\u1eed d\u1ee5ng HDD \u0111\u1ec3 l\u01b0u tr\u1eef c\u00e1c t\u1ec7p l\u1edbn, tr\u00f2 ch\u01a1i v\u00e0 th\u01b0 vi\u1ec7n ph\u01b0\u01a1ng ti\u1ec7n.<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng lai:<\/strong> M\u1ed9t s\u1ed1 c\u1ea5u h\u00ecnh k\u1ebft h\u1ee3p SSD (\u0111\u1ec3 t\u1ed1c \u0111\u1ed9) v\u00e0 HDD (\u0111\u1ec3 dung l\u01b0\u1ee3ng), mang l\u1ea1i s\u1ef1 k\u1ebft h\u1ee3p t\u1ed1t nh\u1ea5t c\u1ee7a c\u1ea3 hai th\u1ebf gi\u1edbi.<\/li>\n<\/ul>\n<h3>Ti\u1ebfp theo cho c\u00f4ng ngh\u1ec7 \u0111\u0129a t\u1eeb t\u1eeb t\u00ednh<\/h3>\n<p>S\u00e1ng t\u1ea1o ch\u01b0a d\u1eebng l\u1ea1i. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng g\u00ec \u0111ang ch\u1edd \u0111\u1ee3i trong t\u01b0\u01a1ng lai:<\/p>\n<ul>\n<li><strong>HAMR (Ghi \u0111\u0129a t\u1eeb h\u1ed7 tr\u1ee3 nhi\u1ec7t):<\/strong> C\u00f4ng ngh\u1ec7 n\u00e0y s\u1eed d\u1ee5ng laser \u0111\u1ec3 l\u00e0m n\u00f3ng b\u1ec1 m\u1eb7t \u0111\u0129a, cho ph\u00e9p \u1ed5 \u0111\u0129a l\u01b0u tr\u1eef nhi\u1ec1u d\u1eef li\u1ec7u h\u01a1n trong c\u00f9ng m\u1ed9t kh\u00f4ng gian.<\/li>\n<li><strong>V\u1eadt li\u1ec7u b\u1ec1n v\u1eefng:<\/strong> C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111ang ph\u00e1t tri\u1ec3n l\u1edbp ph\u1ee7 v\u00e0 quy tr\u00ecnh th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng cho \u0111\u0129a t\u1eeb. N\u1ebfu b\u1ea1n t\u00f2 m\u00f2 v\u1ec1 <strong>nghi\u00ean c\u1ee9u v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/strong>, h\u00e3y xem <a href=\"https:\/\/nbaem.com\/vi\/recent-advances-in-magnetic-material-research\/\" target=\"_blank\" rel=\"noopener\">r<strong><span style=\"color: #ff6600;\">nh\u1eefng ti\u1ebfn b\u1ed9 g\u1ea7n \u0111\u00e2y trong nghi\u00ean c\u1ee9u v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/span><\/strong><\/a><strong><span style=\"color: #ff6600;\">.<\/span><\/strong><\/li>\n<li><strong>\u0110\u1ed9 b\u1ec1n t\u1ed1t h\u01a1n:<\/strong> C\u00e1c \u1ed5 \u0111\u0129a trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn \u0111\u1ec3 ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 h\u01b0 h\u1ecfng, gi\u00fap ch\u00fang t\u1ed3n t\u1ea1i l\u00e2u h\u01a1n trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/li>\n<\/ul>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam v\u1ec1 c\u00e1ch v\u1eadt li\u1ec7u t\u1eeb t\u00ednh \u0111ang \u0111\u1ecbnh h\u00ecnh c\u00f4ng ngh\u1ec7 m\u1edbi, h\u00e3y xem h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <strong><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/vi\/sustainability-in-magnetic-material-production\/\" target=\"_blank\" rel=\"noopener\">s\u1ef1 b\u1ec1n v\u1eefng trong s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u t\u1eeb t\u00ednh<\/a>.<\/span><\/strong><\/p>\n<p><strong>T\u00f3m l\u1ea1i:<\/strong> \u0110\u0129a t\u1eeb v\u1eabn l\u00e0 gi\u1ea3i ph\u00e1p l\u01b0u tr\u1eef hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed, dung l\u01b0\u1ee3ng cao cho c\u1ea3 nhu c\u1ea7u c\u00e1 nh\u00e2n v\u00e0 doanh nghi\u1ec7p, ngay c\u1ea3 khi c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi \u0111\u1ea9y gi\u1edbi h\u1ea1n c\u1ee7a nh\u1eefng g\u00ec c\u00f3 th\u1ec3.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u0129a t\u1eeb v\u1edbi h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 nguy\u00ean l\u00fd, \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 c\u00e1c v\u1eadt li\u1ec7u t\u1eeb t\u00ednh ch\u1ea5t l\u01b0\u1ee3ng cao NBAEMs \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady<\/p>","protected":false},"author":1,"featured_media":3191,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3192","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/10\/How_do_magnetic_discs_work_jNPRFRpAw.webp","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/3192","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/comments?post=3192"}],"version-history":[{"count":1,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/3192\/revisions"}],"predecessor-version":[{"id":3193,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/3192\/revisions\/3193"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/3191"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=3192"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=3192"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=3192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}