{"id":4780,"date":"2020-03-22T14:27:03","date_gmt":"2020-03-22T14:27:03","guid":{"rendered":"https:\/\/www.thegioimaychu.vn\/blog\/?p=4780"},"modified":"2020-03-24T03:51:20","modified_gmt":"2020-03-24T03:51:20","slug":"so-sanh-qlc-va-tlc-nand-cai-nao-tot-nhat-cho-nhu-cau-luu-tru-cua-ban","status":"publish","type":"post","link":"https:\/\/thegioimaychu.vn\/blog\/tong-hop\/so-sanh-qlc-va-tlc-nand-cai-nao-tot-nhat-cho-nhu-cau-luu-tru-cua-ban-p4780\/","title":{"rendered":"So s\u00e1nh QLC v\u00e0 TLC NAND: C\u00e1i n\u00e0o t\u1ed1t nh\u1ea5t cho nhu c\u1ea7u l\u01b0u tr\u1eef c\u1ee7a b\u1ea1n?\u00a0"},"content":{"rendered":"<style>.iblink{color:#975!important;}.iblink:hover{color:orange!important;}<\/style><p>B\u1ed9 nh\u1edb flash QLC t\u1ed1t nh\u1ea5t cho h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 thao t\u00e1c \u0111\u1ecdc (Read) nhi\u1ec1u, trong khi TLC ph\u00f9 h\u1ee3p v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c n\u1eb7ng v\u1ec1 thao t\u00e1c ghi (Write). H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 s\u1ef1 kh\u00e1c nhau c\u1ee7a QLC so v\u1edbi TLC NAND v\u00e0 c\u00e1ch ch\u00fang c\u00f9ng t\u1ed3n t\u1ea1i trong trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n<p>C\u00e1c chuy\u00ean gia CNTT c\u00f3 xu h\u01b0\u1edbng xem s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a c\u00f4ng ngh\u1ec7 m\u1ed9t c\u00e1ch ri\u00eang l\u1ebb &#8211; lu\u00f4n lu\u00f4n \u0111i theo m\u1ed9t h\u01b0\u1edbng \u0111\u1ec3 c\u1ea3i thi\u1ec7n nhi\u1ec1u h\u01a1n, tuy nhi\u00ean \u0111i\u1ec1u \u0111\u00f3 th\u1ec3 hi\u1ec7n s\u1ef1 gi\u1edbi h\u1ea1n nh\u1ea5t \u0111\u1ecbnh.\u00a0Nghe c\u00f3 v\u1ebb h\u1ee3p l\u00fd: Kh\u00f4ng ai t\u1ea1o ra TV CRT, \u0111i\u1ec7n tho\u1ea1i quay s\u1ed1 c\u1ed1 \u0111\u1ecbnh ho\u1eb7c m\u00e1y cassette n\u1eefa v\u00ec kh\u00f4ng c\u00f3 th\u1ecb tr\u01b0\u1eddng n\u00e0o cho ch\u00fang v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 thay th\u1ebf v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n<p>Tuy nhi\u00ean, \u0111\u00f4i khi c\u00f3 ch\u1ed7 cho nhi\u1ec1u th\u1ebf h\u1ec7 c\u1ee7a c\u00f9ng m\u1ed9t c\u00f4ng ngh\u1ec7 c\u01a1 b\u1ea3n t\u1ed3n t\u1ea1i v\u00ec nh\u1eefng kh\u00e1c bi\u1ec7t th\u1ee9 y\u1ebfu nh\u01b0 hi\u1ec7u su\u1ea5t, \u0111\u1ed9 tin c\u1eady, \u0111\u1ed9 b\u1ec1n, tu\u1ed5i th\u1ecd v\u00e0 chi ph\u00ed.\u00a0\u0110\u00f3 l\u00e0 tr\u01b0\u1eddng h\u1ee3p v\u1edbi b\u1ed9 nh\u1edb flash NAND, trong \u0111\u00f3 s\u1ef1 ph\u00e1t tri\u1ec3n Single-Level Cell (SLC) sang multi-level cell, Trible-Level Cell (TLC)\u00a0v\u00e0 gi\u1edd l\u00e0 c\u00f4ng ngh\u1ec7 l\u01b0u tr\u1eef Quad-Level Cell (QLC) \u0111\u00e3 mang l\u1ea1i \u0111\u1ee7 kho\u1ea3ng c\u00e1ch hi\u1ec7u su\u1ea5t gi\u1eefa ch\u00fang, cho ph\u00e9p kh\u00f4ng gian cho c\u00e1c \u0111\u1ecbnh d\u1ea1ng flash NAND kh\u00e1c nhau c\u00f9ng t\u1ed3n t\u1ea1i trong trung t\u00e2m d\u1eef li\u1ec7u hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p>\u1ede \u0111\u00e2y, ch\u00fang t\u00f4i t\u1eadp trung v\u00e0o hai c\u00f4ng ngh\u1ec7 m\u1eadt \u0111\u1ed9 cao nh\u1ea5t, QLC so v\u1edbi TLC.\u00a0B\u1ea1n c\u00f3 th\u1ec3 ngh\u0129 r\u1eb1ng v\u00ec QLC, v\u1edbi b\u1ed1n bit tr\u00ean m\u1ed7i cell, l\u00e0 ph\u1ea7n ph\u00e1t tri\u1ec3n m\u1edf r\u1ed9ng l\u00e0m t\u0103ng m\u1eadt \u0111\u1ed9 b\u1ed9 nh\u1edb flash l\u00ean 33%, n\u00f3 c\u00f3 th\u1ec3 thay th\u1ebf ho\u00e0n to\u00e0n TLC, v\u1edbi ba bit cho m\u1ed7i cell, cho vi\u1ec7c s\u1eed d\u1ee5ng SSD dung l\u01b0\u1ee3ng cao.\u00a0Tuy nhi\u00ean, c\u00f4ng ngh\u1ec7 TLC \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n v\u1ec1 \u0111\u1ed9 b\u1ec1n v\u00e0 hi\u1ec7u su\u1ea5t \u0111\u1ec3 t\u1ea1o ra \u00fd ngh\u0129a cho c\u1ea3 hai lo\u1ea1i NAND.\u00a0Ti\u1ebfp theo ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 s\u1ef1 c\u1ea1nh tranh gi\u1eefa QLC v\u00e0 TLC v\u00e0 l\u00fd do t\u1ea1i sao b\u1ea1n c\u00f3 th\u1ec3 mu\u1ed1n c\u1ea3 hai lo\u1ea1i trong <a class=\"iblink\" href=\"\/storage\/\">h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef<\/a> c\u1ee7a m\u00ecnh.<\/p>\n<p><a href=\"https:\/\/thegioimaychu.vn\/blog\/wp-content\/uploads\/2020\/03\/tgmc-blog-5e7774fdf178f-e1584887183394.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4809\" src=\"https:\/\/thegioimaychu.vn\/blog\/wp-content\/uploads\/2020\/03\/tgmc-blog-5e7774fdf178f-e1584887183394.png\" alt=\"\" width=\"464\" height=\"379\" srcset=\"https:\/\/thegioimaychu.vn\/blog\/wp-content\/uploads\/2020\/03\/tgmc-blog-5e7774fdf178f-e1584887183394.png 464w, https:\/\/thegioimaychu.vn\/blog\/wp-content\/uploads\/2020\/03\/tgmc-blog-5e7774fdf178f-e1584887183394-300x245.png 300w\" sizes=\"auto, (max-width: 464px) 100vw, 464px\" \/><\/a><\/p>\n<h3>Th\u00f4ng l\u01b0\u1ee3ng so v\u1edbi s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i v\u1ec1 \u0111\u1ed9 b\u1ec1n<\/h3>\n<p>C\u00f4ng ngh\u1ec7 b\u1ed9 nh\u1edb hi\u1ebfm khi cung c\u1ea5p cho b\u1ea1n m\u1ed9t c\u00e1i g\u00ec \u0111\u00f3 m\u00e0 kh\u00f4ng m\u1ea5t m\u00e1t g\u00ec;\u00a0\u0111\u1ea9y c\u00e1c ranh gi\u1edbi theo m\u1ed9t h\u01b0\u1edbng th\u01b0\u1eddng hy sinh c\u00e1c t\u00ednh n\u0103ng v\u00e0 hi\u1ec7u su\u1ea5t \u1edf m\u1ed9t chi\u1ec1u kh\u00e1c.\u00a0S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a\u00a0c\u00f4ng ngh\u1ec7 t\u1ebf b\u00e0o\u00a0b\u1ed9 nh\u1edb (memory cell) flash\u00a0NAND\u00a0\u0111\u00e3 d\u1eabn \u0111\u1ebfn s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i m\u1eadt \u0111\u1ed9 cao h\u01a1n th\u00f4ng qua vi\u1ec7c \u0111\u00f3ng g\u00f3i nhi\u1ec1u bit tr\u00ean m\u1ed7i cell g\u00e2y ra th\u00f4ng l\u01b0\u1ee3ng I\/O ch\u1eadm h\u01a1n, \u0111\u1ed9 tr\u1ec5 \u0111\u1ecdc cao h\u01a1n v\u00e0 \u0111\u1ed9 b\u1ec1n th\u1ea5p h\u01a1n.<\/p>\n<p>S\u1ef1 \u0111\u00e1nh \u0111\u1ed5i gi\u1eefa th\u00f4ng l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 b\u1ec1n so v\u1edbi dung l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed l\u00e0 l\u00fd do m\u1ed9t s\u1ed1 <a class=\"iblink\" href=\"\/storage\/\">h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef<\/a> v\u1eabn s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb SLC.\u00a0\u0110\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb SLC l\u00e0m cho ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c x\u1eed l\u00fd giao d\u1ecbch t\u1ea7n su\u1ea5t cao.\u00a0Tuy nhi\u00ean, c\u00e1c l\u1edbp \u1ee9ng d\u1ee5ng m\u1edbi trong machine learning, ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1edbn v\u00e0 media streaming y\u00eau c\u1ea7u ng\u00e0y c\u00e0ng t\u0103ng s\u1ed1 l\u01b0\u1ee3ng workloads, ch\u1ee7 y\u1ebfu l\u00e0 \u0111\u1ecdc d\u1eef li\u1ec7u thay v\u00ec ghi, gi\u1ea3m thi\u1ec3u\u00a0t\u1ea7m quan tr\u1ecdng c\u1ee7a \u0111\u1ed9 b\u1ec1n flash\u00a0.<\/p>\n<h3>QLC so v\u1edbi TLC: Xu h\u01b0\u1edbng gi\u1ea3m DWPD (Drive Writes per day)<\/h3>\n<p>Theo c\u00f4ng ty nghi\u00ean c\u1ee9u Forward Insights, \u00edt h\u01a1n 20% s\u1ed1 SSD \u0111\u01b0\u1ee3c b\u00e1n trong n\u0103m ngo\u00e1i \u0111\u01b0\u1ee3c ghi nh\u1eadn nhi\u1ec1u h\u01a1n m\u1ed9t DWPD.\u00a0\u0110\u1ebfn n\u0103m 2023, \u01b0\u1edbc t\u00ednh r\u1eb1ng 85% \u1ed5 \u0111\u0129a \u0111\u01b0\u1ee3c b\u00e1n s\u1ebd l\u00e0 c\u00e1c m\u1eabu c\u00f3 th\u1eddi l\u01b0\u1ee3ng c\u00f4ng b\u1ed1 th\u1ea5p t\u1ea1i 01 DWPD ho\u1eb7c \u00edt h\u01a1n.\u00a0DWPD \u0111o t\u1ed5ng l\u01b0\u1ee3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ghi v\u00e0o \u1ed5 \u0111\u0129a t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u1ed5ng dung l\u01b0\u1ee3ng c\u1ee7a n\u00f3 v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ec9 ra \u0111\u1ed9 b\u1ec1n \u1ed5 \u0111\u0129a \u0111\u01b0\u1ee3c b\u1ea3o \u0111\u1ea3m trong n\u0103m n\u0103m.\u00a0\u1ed4 \u0111\u0129a 1 TB \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh \u1edf 01 DWPD c\u00f3 th\u1ec3 duy tr\u00ec trung b\u00ecnh 1 TB d\u1eef li\u1ec7u ghi m\u1ed7i ng\u00e0y trong 5 n\u0103m.<\/p>\n<p>Xu h\u01b0\u1edbng \u00edt DWPD c\u1ee7ng c\u1ed1 tr\u01b0\u1eddng h\u1ee3p cho c\u00e1c \u1ed5 \u0111\u0129a QLC.\u00a0Ch\u00fang c\u00f3 \u0111\u1ed9 b\u1ec1n ng\u1eafn nh\u1ea5t so v\u1edbi b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb flash hi\u1ec7n t\u1ea1i n\u00e0o do dung sai ch\u1eb7t ch\u1ebd v\u1ec1 n\u1ea1p cho t\u1eebng tr\u1ea1ng th\u00e1i bit trong m\u1ed9t \u00f4 nh\u1edb c\u00f9ng v\u1edbi kho\u1ea3ng c\u00e1ch ch\u1eb7t h\u01a1n v\u00e0 c\u1ed5ng c\u00e1ch \u0111i\u1ec7n m\u1ecfng h\u01a1n trong c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t flash h\u00e0ng \u0111\u1ea7u.<\/p>\n<p><a href=\"https:\/\/thegioimaychu.vn\/blog\/wp-content\/uploads\/2020\/03\/tgmc-blog-5e7774ff0c11a-e1584887215759.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4810\" src=\"https:\/\/thegioimaychu.vn\/blog\/wp-content\/uploads\/2020\/03\/tgmc-blog-5e7774ff0c11a-e1584887215759.png\" alt=\"\" width=\"506\" height=\"375\" srcset=\"https:\/\/thegioimaychu.vn\/blog\/wp-content\/uploads\/2020\/03\/tgmc-blog-5e7774ff0c11a-e1584887215759.png 506w, https:\/\/thegioimaychu.vn\/blog\/wp-content\/uploads\/2020\/03\/tgmc-blog-5e7774ff0c11a-e1584887215759-300x222.png 300w\" sizes=\"auto, (max-width: 506px) 100vw, 506px\" \/><\/a><\/p>\n<p>B\u1ea1n ph\u1ea3i c\u1ea9n th\u1eadn khi so s\u00e1nh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt DWPD gi\u1eefa c\u00e1c lo\u1ea1i thi\u1ebft b\u1ecb, b\u1edfi v\u00ec \u0111\u00f3 l\u00e0 th\u01b0\u1edbc \u0111o t\u01b0\u01a1ng \u0111\u1ed1i v\u1ec1 t\u01b0\u01a1ng quan v\u1edbi t\u1ed5ng dung l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a.\u00a0Nh\u01b0 Micron Technology\u00a0ch\u1ec9 ra, SSD TLC 960 GB \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 \u1edf m\u1ee9c 1 DWPD c\u00f3 \u0111\u1ed9 b\u1ec1n t\u1ed5ng th\u1ec3 t\u01b0\u01a1ng t\u1ef1 v\u1edbi SSD QLC 1,92 TB \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 \u1edf m\u1ee9c 0,5 DWPD cho m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c c\u1ee5 th\u1ec3.\u00a0M\u1eb7c d\u00f9 th\u00f4ng s\u1ed1 QLC DPWD th\u1ea5p h\u01a1n, nh\u01b0ng t\u1ed5ng l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ghi m\u1ed7i ng\u00e0y l\u00e0 nh\u01b0 nhau cho hai thi\u1ebft b\u1ecb.\u00a0Do \u0111\u00f3, \u0111\u1ed1i v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c h\u1ea7u nh\u01b0 ch\u1ec9 \u0111\u1ecdc d\u1eef li\u1ec7u, thi\u1ebft b\u1ecb QLC l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n v\u00ec c\u00f4ng su\u1ea5t t\u0103ng l\u00ean.<\/p>\n<h3>QLC v\u00e0 TLC b\u1ed5 sung cho nhau nh\u01b0 th\u1ebf n\u00e0o<\/h3>\n<p>Th\u1ecb tr\u01b0\u1eddng QLC t\u1eadp trung v\u00e0o c\u00e1c &#8220;Read&#8221; workloads l\u00e0 ch\u00ednh;\u00a0n\u00f3 kh\u00f4ng c\u1ed1 g\u1eafng thay th\u1ebf c\u00e1c thi\u1ebft b\u1ecb TLC, m\u00e0 l\u00e0 \u0111\u1ec3 thay th\u1ebf <a class=\"iblink\" href=\"\/linh-kien-may-chu\/hdd\/\">\u1ed5 c\u1ee9ng HDD<\/a>.\u00a0\u0110\u00e2y l\u00e0 l\u00fd do c\u1ee7a Micron \u0111\u1ec3 ti\u1ebfp t\u1ee5c s\u1ea3n xu\u1ea5t c\u1ea3 hai lo\u1ea1i thi\u1ebft b\u1ecb.\u00a0Micron \u0111\u00e3 \u0111\u01b0a ra m\u1ed9t l\u1eadp lu\u1eadn thuy\u1ebft ph\u1ee5c r\u1eb1ng TLC v\u00e0 QLC l\u00e0 b\u1ed5 sung cho nhau, v\u1edbi QLC l\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng gi\u1eefa l\u01b0u tr\u1eef flash TLC v\u00e0 \u0111\u0129a t\u1eeb HDD.\u00a0Th\u1eadt v\u1eady, Micron \u0111\u01b0a ra tr\u01b0\u1eddng h\u1ee3p n\u00e0y b\u1edfi v\u00ec SSD kh\u00f4ng b\u1ecb hao m\u00f2n khi \u0111\u1ecdc d\u1eef li\u1ec7u, trong khi \u0111\u00f3, v\u1ec1 \u0111\u1ed9 b\u1ec1n th\u00ec QLC v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi \u1ed5 c\u1ee9ng cho c\u00e1c workloads m\u00e0 trong \u0111\u00f3 c\u00f3 t\u1ef7 l\u1ec7 cao c\u00e1c l\u1ea7n chuy\u1ec3n d\u1eef li\u1ec7u tu\u1ea7n t\u1ef1 v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn.<\/p>\n<p>Ch\u00fang ta c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 ch\u00ednh x\u00e1c h\u01a1n c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m workloads ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi c\u00e1c \u1ed5 \u0111\u0129a QLC so v\u1edbi TLC b\u1eb1ng c\u00e1ch xem x\u00e9t k\u1ef9 c\u00e1c I\/O pattern c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau.\u00a0Theo m\u00f4 h\u00ecnh cung c\u1ea5p b\u1edfi Micron, c\u00e1c \u1ed5 \u0111\u0129a QLC l\u00e0 t\u1ed1t nh\u1ea5t cho\u00a0workload \u0111\u1ecdc nhi\u1ec1u\u00a0cho \u0111\u1ebfn khi h\u1ed7n h\u1ee3p \u0111\u1ecdc\/ghi \u0111\u1ea1t kho\u1ea3ng 70\/30 cho truy\u1ec1n d\u1eef li\u1ec7u nh\u1ecf ho\u1eb7c ng\u1eabu nhi\u00ean, v\u1edbi t\u1ef7 l\u1ec7 \u0111\u1ea1t 50-50 cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 ghi tu\u1ea7n t\u1ef1 l\u1edbn.\u00a0Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c \u1ed5 \u0111\u0129a TLC t\u1ed1t h\u01a1n cho workload c\u00f3 thao t\u00e1c ghi chi\u1ebfm \u01b0u th\u1ebf, ngo\u1ea1i tr\u1eeb thi\u1ec3u s\u1ed1 c\u00e1c \u1ee9ng d\u1ee5ng giao d\u1ecbch t\u1ea7n su\u1ea5t cao c\u00f3 th\u1ec3 y\u00eau c\u1ea7u \u1ed5 SLC c\u00f3 th\u1ec3 x\u1eed l\u00fd 5 ho\u1eb7c 10 DWPD.<\/p>\n<p>M\u1ed9t c\u00e1ch ng\u1eabu nhi\u00ean, nhi\u1ec1u \u1ee9ng d\u1ee5ng doanh nghi\u1ec7p c\u00f3 t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng nhanh nh\u1ea5t v\u00e0 m\u1ee9c t\u0103ng cao nh\u1ea5t c\u00f3 s\u1ef1 v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 s\u1ed1 li\u1ec7u \u0111\u1ecdc so v\u1edbi ghi.\u00a0Bao g\u1ed3m:<\/p>\n<ul>\n<li>Ph\u00e2n t\u00edch d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c data lake ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng d\u1eef li\u1ec7u l\u1edbn \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n nh\u01b0 Hadoop;<\/li>\n<li>\u1ee8ng d\u1ee5ng AI s\u1eed d\u1ee5ng machine learning ho\u1eb7c <a class=\"iblink\" href=\"\/blog\/tag\/deep-learning\/\">deep learning<\/a>;<\/li>\n<li>C\u01a1 s\u1edf d\u1eef li\u1ec7u NoQuery;<\/li>\n<li>C\u00e1c kho l\u01b0u tr\u1eef \u0111\u1ed1i t\u01b0\u1ee3ng l\u1edbn s\u1eed d\u1ee5ng Ceph, Gluster, Luster,&#8230;<\/li>\n<li>Media streaming v\u00e0 c\u00e1c m\u1ea1ng l\u01b0\u1edbi ph\u00e2n ph\u1ed1i n\u1ed9i dung (CDN).<\/li>\n<\/ul>\n<blockquote><p>V\u1edbi l\u1ee3i th\u1ebf kh\u00e1 l\u1edbn v\u1ec1 dung l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed m\u1ed7i bit th\u1ea5p h\u01a1n, hy v\u1ecdng c\u00e1c thi\u1ebft b\u1ecb QLC s\u1ebd sinh s\u00f4i n\u1ea3y n\u1edf trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u doanh nghi\u1ec7p c\u00f9ng v\u1edbi c\u00e1c thi\u1ebft b\u1ecb TLC v\u00e0 SLC.<\/p><\/blockquote>\n<h3>V\u1ea5n \u0111\u1ec1 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng<\/h3>\n<p>Thi\u1ebft k\u1ebf c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb QLC, s\u1eed d\u1ee5ng c\u00e1c kh\u1ed1i b\u1ed9 nh\u1edb l\u1edbn h\u01a1n TLC, ph\u00f9 h\u1ee3p v\u1edbi I\/O v\u1edbi chuy\u1ec3n giao tu\u1ea7n t\u1ef1 kh\u1ed1i l\u1edbn, nh\u01b0ng l\u1ea1i kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi ki\u1ec3u I\/O ng\u1eabu nhi\u00ean nh\u1ecf \u0111i\u1ec3n h\u00ecnh c\u1ee7a nhi\u1ec1u lo\u1ea1i c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n<p>M\u1ed9t c\u00e1ch c\u00e1c h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n n\u00e0y l\u00e0 b\u1eb1ng c\u00e1ch gh\u00e9p m\u1ed9t m\u1ea3ng SSD QLC v\u1edbi b\u1ed9 \u0111\u1ec7m ghi non-volatile DIMM (NVDIMM) \u0111\u1ec3 th\u1ef1c hi\u1ec7n ghi k\u1ebft h\u1ee3p.\u00a0Vi\u1ec7c ghi ng\u1eabu nhi\u00ean nh\u1ecf \u0111\u01b0\u1ee3c \u0111\u1ec7m cho \u0111\u1ebfn khi t\u00edch l\u0169y \u0111\u1ee7 \u0111\u1ec3 l\u1ea5p \u0111\u1ea7y m\u1ed9t kh\u1ed1i d\u1eef li\u1ec7u v\u00e0 sau \u0111\u00f3 h\u1ec7 th\u1ed1ng ghi tu\u1ea7n t\u1ef1 ch\u00fang v\u00e0o m\u1ed9t \u1ed5 \u0111\u0129a ho\u1eb7c h\u1ec7 th\u1ed1ng t\u1ec7p d\u01b0\u1edbi d\u1ea1ng m\u1ed9t l\u1ea7n chuy\u1ec3n.\u00a0B\u1ed9 \u0111\u1ec7m NVDIMM c\u00f3 th\u1ec3 l\u00e0 c\u00e1c m\u00f4-\u0111un RAM \u0111\u1ed9ng d\u1ef1a tr\u00ean pin ho\u1eb7c t\u1ee5 \u0111i\u1ec7n, c\u00e1c\u00a0m\u00f4-\u0111un b\u1ed9 nh\u1edb li\u00ean t\u1ee5c non-volatile Optane ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 \u1ed5 \u0111\u0129a NVMe SLC ho\u1eb7c TLC c\u00f3 \u0111\u1ed9 b\u1ec1n cao.<\/p>\n<p>C\u1ea3 Microsoft v\u00e0 Western Digital \u0111\u1ec1u c\u00f3 chi ti\u1ebft m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn \u0111\u1ec3 s\u1eed d\u1ee5ng QLC xung quanh kh\u00f4ng gian c\u1ee7a NVMe.\u00a0H\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef doanh nghi\u1ec7p s\u1eed d\u1ee5ng QLC hi\u1ec7n c\u00f3 s\u1eb5n, v\u1edbi Pure Storage s\u1ebd ph\u00e1t h\u00e0nh FlashArray\/\/C v\u00e0o qu\u00fd IV n\u0103m 2019.<\/p>\n<p>V\u1edbi l\u1ee3i th\u1ebf kh\u00e1 l\u1edbn v\u1ec1 dung l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed m\u1ed7i bit th\u1ea5p h\u01a1n, hy v\u1ecdng c\u00e1c thi\u1ebft b\u1ecb QLC s\u1ebd sinh s\u00f4i n\u1ea3y n\u1edf trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u doanh nghi\u1ec7p c\u00f9ng v\u1edbi c\u00e1c thi\u1ebft b\u1ecb TLC v\u00e0 SLC.\u00a0H\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef s\u1ebd qu\u1ea3n l\u00fd th\u00f4ng minh v\u1ecb tr\u00ed kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c theo c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 y\u00eau c\u1ea7u I\/O c\u1ee7a t\u1eebng \u1ee9ng d\u1ee5ng.<\/p>\n<div>____<br \/><b>B\u00e0i vi\u1ebft 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H&atilde;y c&ugrave;ng kh&aacute;m ph&aacute; s&#7921; kh&aacute;c nhau c&#7911;a QLC so v&#7899;i TLC NAND v&agrave; c&aacute;ch ch&uacute;ng c&ugrave;ng t&#7891;n t&#7841;i trong trung&#8230;<\/p>\n","protected":false},"author":2,"featured_media":4813,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[336,334,33,32,335],"class_list":["post-4780","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tong-hop","tag-nand-flash","tag-qlc","tag-ssd","tag-storage","tag-tlc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>So s\u00e1nh QLC v\u00e0 TLC NAND: C\u00e1i n\u00e0o t\u1ed1t nh\u1ea5t cho nhu c\u1ea7u l\u01b0u tr\u1eef c\u1ee7a b\u1ea1n?\u00a0 - 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\/so-sanh-qlc-va-tlc-nand-cai-nao-tot-nhat-cho-nhu-cau-luu-tru-cua-ban-p4780\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"So s\u00e1nh QLC v\u00e0 TLC NAND: C\u00e1i n\u00e0o t\u1ed1t nh\u1ea5t cho nhu c\u1ea7u l\u01b0u tr\u1eef c\u1ee7a b\u1ea1n?\u00a0 - Blog | TheGioiMayChu\" \/>\n<meta name=\"twitter:description\" content=\"B&#7897; nh&#7899; flash QLC t&#7889;t nh&#7845;t cho h&#7847;u h&#7871;t c&aacute;c &#7913;ng d&#7909;ng c&oacute; thao t&aacute;c &#273;&#7885;c (Read) nhi&#7873;u, trong khi TLC ph&ugrave; h&#7907;p v&#7899;i kh&#7889;i l&#432;&#7907;ng c&ocirc;ng vi&#7879;c n&#7863;ng v&#7873; thao t&aacute;c ghi (Write). 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