{"id":13775,"date":"2024-04-11T00:28:24","date_gmt":"2024-04-10T18:28:24","guid":{"rendered":"https:\/\/dtasiagroup.com\/data-replication-what-is-it-and-what-are-the-advantages-of-using-it\/"},"modified":"2024-05-15T14:51:49","modified_gmt":"2024-05-15T08:51:49","slug":"data-replication-nhan-ban-du-lieu-la-gi-va-nhung-loi-ich-khi-su-dung","status":"publish","type":"post","link":"https:\/\/dtasiagroup.com\/vi\/data-replication-nhan-ban-du-lieu-la-gi-va-nhung-loi-ich-khi-su-dung\/","title":{"rendered":"Data replication: Nh\u00e2n b\u1ea3n d\u1eef li\u1ec7u l\u00e0 g\u00ec v\u00e0 nh\u1eefng l\u1ee3i \u00edch khi s\u1eed d\u1ee5ng?"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3430 aligncenter\" src=\"https:\/\/s38063.pcdn.co\/wp-content\/uploads\/2024\/02\/Blog-DataReplication-IM-JY-89381B.png\" sizes=\"(max-width: 1100px) 100vw, 1100px\" srcset=\"https:\/\/s38063.pcdn.co\/wp-content\/uploads\/2024\/02\/Blog-DataReplication-IM-JY-89381B.png 1100w, https:\/\/s38063.pcdn.co\/wp-content\/uploads\/2024\/02\/Blog-DataReplication-IM-JY-89381B-300x136.png 300w, https:\/\/s38063.pcdn.co\/wp-content\/uploads\/2024\/02\/Blog-DataReplication-IM-JY-89381B-1024x465.png 1024w, https:\/\/s38063.pcdn.co\/wp-content\/uploads\/2024\/02\/Blog-DataReplication-IM-JY-89381B-768x349.png 768w\" alt=\"\" width=\"1100\" height=\"500\" \/><\/p>\n<p>Data replication \u0111\u00e3 chuy\u1ec3n t\u1eeb \u201cc\u00f3 th\u00ec t\u1ed1t\u201d tr\u1edf th\u00e0nh \u201cxu th\u1ebf ch\u1ee7 \u0111\u1ea1o\u201d cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng nh\u01b0 T\u00ednh kh\u1ea3 d\u1ee5ng cao (High Availability) v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i (Disaster Recovery). \u0110\u1ed3ng th\u1eddi, c\u00e1c c\u00f4ng ty nh\u1eadn th\u1ea5y nhu c\u1ea7u sao ch\u00e9p ho\u1eb7c di chuy\u1ec3n d\u1eef li\u1ec7u v\u00ec nhi\u1ec3u l\u00fd do kh\u00e1c, bao g\u1ed3m hi\u1ec7u su\u1ea5t v\u00e0 chuy\u1ec3n \u0111\u1ed5i c\u00e1c transactional data th\u00e0nh c\u00e1c event .<\/p>\n<p><strong>Data replication l\u00e0 g\u00ec?<\/strong><\/p>\n<p>Data replication l\u00e0 qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt c\u00e1c b\u1ea3n sao d\u1eef li\u1ec7u t\u1ea1i nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m kh\u00e1c nhau. M\u1ee5c ti\u00eau c\u1ee7a vi\u1ec7c n\u00e0y l\u00e0 gi\u1eef cho d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n lu\u00f4n s\u1eb5n s\u00e0ng khi c\u00f3 ng\u01b0\u1eddi c\u1ea7n s\u1eed d\u1ee5ng d\u1eef li\u1ec7u \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh v\u00e0 c\u1ea3 nh\u1eefng kh\u00e1ch h\u00e0ng \u0111ang c\u1ea7n \u0111\u1ec3 th\u1ef1c hi\u1ec7n giao d\u1ecbch.<\/p>\n<p><strong>Data replication ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/p>\n<div class=\"flex-1 overflow-hidden\">\n<div class=\"react-scroll-to-bottom--css-vmgqj-79elbk h-full\">\n<div class=\"react-scroll-to-bottom--css-vmgqj-1n7m0yu\">\n<div class=\"flex flex-col text-sm pb-9\">\n<div class=\"w-full text-token-text-primary\" dir=\"auto\" data-testid=\"conversation-turn-27\">\n<div class=\"px-4 py-2 justify-center text-base md:gap-6 m-auto\">\n<div class=\"flex flex-1 text-base mx-auto gap-3 juice:gap-4 juice:md:gap-6 md:px-5 lg:px-1 xl:px-5 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem]\">\n<div class=\"relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex-col gap-1 md:gap-3\">\n<div class=\"flex flex-grow flex-col max-w-full\">\n<div class=\"min-h-[20px] text-message flex flex-col items-start gap-3 whitespace-pre-wrap break-words [.text-message+&amp;]:mt-5 overflow-x-auto\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"c3a13dd0-09d1-4066-a950-cf806bebce92\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p>Data\u00a0 ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch duy tr\u00ec s\u1ef1 \u0111\u1ed3ng b\u1ed9 gi\u1eefa d\u1eef li\u1ec7u ngu\u1ed3n (source data) v\u00e0 d\u1eef li\u1ec7u \u0111\u00edch (target data). \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 b\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o v\u00e0o d\u1eef li\u1ec7u ngu\u1ed3n \u0111\u1ec1u \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh trong d\u1eef li\u1ec7u \u0111\u00edch.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>T\u00f9y thu\u1ed9c v\u00e0o t\u1eebng chi\u1ebfn l\u01b0\u1ee3c data replication c\u1ee5 th\u1ec3, c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u00edch c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 gi\u1ed1ng v\u1edbi ngu\u1ed3n (sao ch\u00e9p to\u00e0n b\u1ed9 c\u01a1 s\u1edf d\u1eef li\u1ec7u &#8211; full-database replication) c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ph\u00e2ng c\u1ee7a ngu\u1ed3n (partial replication). N\u1ebfu m\u1ee5c ti\u00eau c\u1ee7a b\u1ea1n l\u00e0 t\u00ednh kh\u1ea3 d\u1ee5ng cao (high availability) ho\u1eb7c kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i (disaster recovery) th\u00ec vi\u1ec7c duy tr\u00ec c\u00e1c b\u1ea3n sao \u0111\u1ea7y \u0111\u1ee7 l\u00e0 \u0111i\u1ec1u h\u1ee3p l\u00fd. \u0110\u1ec3 ph\u00e2n t\u00edch, b\u00e1o c\u00e1o ho\u1eb7c theo d\u00f5i, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c tr\u00ean c\u01a1 s\u1edf d\u1eef li\u1ec7u ngu\u1ed3n b\u1eb1ng c\u00e1ch sao ch\u00e9p c\u00e1c t\u1eadp h\u1ee3p con, theo khu v\u1ef1c, ch\u1ee9c n\u0103ng kinh doanh ho\u1eb7c event, c\u1ee7a d\u1eef li\u1ec7u t\u1eeb ngu\u1ed3n \u0111\u1ebfn nhi\u1ec1u \u0111\u00edch kh\u00e1c nhau.<\/p>\n<p>C\u00e1c b\u1ea3n sao d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft cho vi\u1ec7c sao ch\u00e9p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau.<\/p>\n<p>\u0110\u01a1n gi\u1ea3n nh\u1ea5t trong s\u1ed1 n\u00e0y l\u00e0 \u1ea3nh ch\u1ee5p ho\u1eb7c b\u1ea3n sao d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u1ea5y t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m n\u00e0o \u0111\u00f3. Ki\u1ec3u sao ch\u00e9p n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 sao l\u01b0u ho\u1eb7c trong tr\u01b0\u1eddng h\u1ee3p d\u1eef li\u1ec7u t\u1ea1i \u0111\u00edch c\u00f3 th\u1ec3 c\u0169 h\u01a1n d\u1eef li\u1ec7u t\u1ea1i ngu\u1ed3n. Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a snapshot l\u00e0 ch\u00fang ch\u1ec9 l\u00e0 \u1ea3nh ch\u1ee5p nhanh ho\u1eb7c h\u00ecnh \u1ea3nh d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3. N\u1ebfu d\u1eef li\u1ec7u ngu\u1ed3n thay \u0111\u1ed5i, nh\u1eefng thay \u0111\u1ed5i \u0111\u00f3 s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh t\u1ea1i \u0111\u00edch (target) cho \u0111\u1ebfn khi c\u00f3 b\u1ea3n snapshot ti\u1ebfp theo. Ngo\u00e0i ra, snapshot th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ee5p tr\u00ean to\u00e0n b\u1ed9 c\u01a1 s\u1edf d\u1eef li\u1ec7u, vi\u1ec7c n\u00e0y c\u00f3 th\u1ec3 t\u1ed1n th\u1eddi gian.<\/p>\n<p>M\u1ed9t k\u1ef9 thu\u1eadt kh\u00e1c \u0111\u00f4i khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho vi\u1ec7c sao ch\u00e9p l\u00e0 sao ch\u00e9p h\u1ee3p nh\u1ea5t (merge replication). Merge replication li\u00ean quan \u0111\u1ebfn vi\u1ec7c ghi l\u1ea1i c\u00e1c thay \u0111\u1ed5i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i ngu\u1ed3n v\u00e0 sau \u0111\u00f3 \u00e1p d\u1ee5ng nh\u1eefng thay \u0111\u1ed5i \u0111\u00f3 d\u01b0\u1edbi d\u1ea1ng m\u1ed9t l\u00f4 (batch) v\u00e0o \u0111\u00edch. V\u00ec d\u1eef li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd nhi\u1ec1u l\u1ea7n, n\u00ean c\u00f3 th\u1ec3 x\u1ea3y ra c\u00e1c v\u1ea5n \u0111\u1ec1\u00a0 hi\u1ec7u su\u1ea5t v\u1edbi merge replication.<\/p>\n<p>H\u00ecnh th\u1ee9c sao ch\u00e9p ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng hi\u1ec7n nay l\u00e0 sao ch\u00e9p giao d\u1ecbch (transactional replication). Trong h\u00ecnh th\u1ee9c sao ch\u00e9p n\u00e0y, c\u00e1c thay \u0111\u1ed5i ho\u1eb7c giao d\u1ecbch \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o ngu\u1ed3n \u0111\u01b0\u1ee3c ghi l\u1ea1i v\u00e0 sau \u0111\u00f3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o \u0111\u00edch. Transactional replication c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00e1c thay \u0111\u1ed5i t\u1eeb ngu\u1ed3n \u0111\u1ebfn \u0111\u00edch g\u1ea7n nh\u01b0 trong th\u1eddi gian th\u1ef1c, h\u1ea7u h\u1ebft th\u1eddi gian ch\u1edd \u0111\u1ee3i l\u00e0 th\u1eddi gian d\u1eef li\u1ec7u di chuy\u1ec3n t\u1eeb ngu\u1ed3n \u0111\u1ebfn \u0111\u00edch. \u0110i\u1ec1u n\u00e0y gi\u1ea3i quy\u1ebft c\u00e1c th\u00e1ch th\u1ee9c v\u1ec1 \u0111\u1ed9 tr\u1ec5 so v\u1edbi c\u00e1ch th\u1ee9c snapshot ho\u1eb7c merge replication.<\/p>\n<p><strong>L\u1ee3i \u00edch c\u1ee7a data replication l\u00e0 g\u00ec?\u00a0<\/strong><\/p>\n<p>B\u1ea1n s\u1ebd ph\u1ea3i ng\u1ea1c nhi\u00ean v\u1ec1 l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u1edf nhi\u1ec1u n\u01a1i c\u00f9ng m\u1ed9t l\u00fac.<\/p>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t l\u1ee3i \u00edch kh\u00e1c: d\u00e0nh cho c\u00e1c d\u1ef1 \u00e1n t\u00edch h\u1ee3p d\u1eef li\u1ec7u. Khi b\u1ea1n t\u1eadp h\u1ee3p m\u1ed9t l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u ngu\u1ed3n, vi\u1ec7c g\u1eedi d\u1eef li\u1ec7u t\u1eeb t\u1ea5t c\u1ea3 c\u00e1c ngu\u1ed3n \u0111\u00f3 \u0111\u1ebfn \u0111\u00edch sao ch\u00e9p (replication target) s\u1ebd gi\u00fap d\u1eef li\u1ec7u s\u1ea3n xu\u1ea5t (production data) lu\u00f4n s\u1eb5n c\u00f3. Trong khi \u0111\u00f3, c\u00e1c c\u00f4ng c\u1ee5 t\u00edch h\u1ee3p t\u1ed5ng h\u1ee3p d\u1eef li\u1ec7u t\u1eeb c\u00e1c kho l\u01b0u tr\u1eef kh\u00e1c nhau v\u00e0 cung c\u1ea5p d\u1eef li\u1ec7u \u0111\u00f3 cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng v\u00e0 vi\u1ec7c ph\u00e2n t\u00edch.<\/p>\n<p>&#8220;Being data-driven&#8221; c\u00f3 ngh\u0129a l\u00e0 lo\u1ea1i b\u1ecf c\u00e0ng nhi\u1ec1u r\u00e0o c\u1ea3n gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00e0ng t\u1ed1t. <a href=\"https:\/\/www.quest.com\/products\/shareplex\/\">Data replication<\/a> l\u00e0 m\u1ed9t b\u01b0\u1edbc ti\u1ebfn l\u1edbn h\u01b0\u1edbng t\u1edbi vi\u1ec7c \u0111\u01b0a d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n \u0111\u1ebfn nhi\u1ec1u n\u01a1i m\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u1ea7n.<\/p>\n<p><strong>V\u00ed d\u1ee5 v\u1ec1 data replication<\/strong><\/p>\n<p>Doanh nghi\u1ec7p c\u1ee7a b\u1ea1n c\u00e0ng ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o d\u1eef li\u1ec7u, vi\u1ec7c \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 m\u1ed9t \u0111i\u1ec3m l\u1ed7i \u0111\u01a1n l\u1ebb (single point of failure) c\u00e0ng tr\u1edf n\u00ean quan tr\u1ecdng. Khi b\u1ea1n sao ch\u00e9p d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh \u0111\u1ebfn c\u00e1c \u0111\u00edch \u1edf c\u00e1c th\u00e0nh ph\u1ed1 kh\u00e1c ho\u1eb7c m\u00fai gi\u1edd kh\u00e1c, b\u1ea1n gi\u00fap ng\u01b0\u1eddi d\u00f9ng v\u00e0 kh\u00e1ch h\u00e0ng c\u1ee7a m\u00ecnh trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ecd lu\u00f4n c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0o n\u00f3.<\/p>\n<ul>\n<li>C\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean CNTT th\u01b0\u1eddng chuy\u1ec3n sang data \u0111\u1ec3 ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda. V\u1edbi d\u1eef li\u1ec7u c\u1ee7a h\u1ecd \u0111\u01b0\u1ee3c duy tr\u00ec an to\u00e0n \u1edf hai ho\u1eb7c ba \u0111\u1ecba \u0111i\u1ec3m kh\u00e1c nhau, h\u1ecd \u00edt b\u1ecb t\u1ed5n th\u1ea5t h\u01a1n khi kinh doanh gi\u00e1n \u0111o\u1ea1n trong tr\u01b0\u1eddng h\u1ee3p h\u1ec7 th\u1ed1ng b\u1ecb x\u00e2m ho\u1eb7c th\u1ea3m h\u1ecda x\u1ea3y ra t\u1ea1i b\u1ea5t k\u1ef3 \u0111\u1ecba \u0111i\u1ec3m n\u00e0o. V\u00e0 v\u00ec b\u1ea3n sao lu\u00f4n \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt n\u00ean t\u00ednh li\u00ean t\u1ee5c trong kinh doanh ch\u1ec9 l\u00e0 v\u1ea5n \u0111\u1ec1 chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb ngu\u1ed3n b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a (disabled source) \u0111\u1ebfn trang \u0111\u00edch (target site).<\/li>\n<li>Trong th\u1eddi \u0111\u1ea1i m\u00e0 c\u01a1 s\u1edf kh\u00e1ch h\u00e0ng v\u00e0 nh\u00f3m ph\u00e1t tri\u1ec3n l\u00e0m vi\u1ec7c theo gi\u1edd \u0111\u1ecba, c\u00e1c b\u1ea3n sao c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111a d\u1ea1ng v\u1ec1 m\u1eb7t \u0111\u1ecba l\u00fd (geo-diverse database) gi\u00fap gi\u1eef d\u1eef li\u1ec7u g\u1ea7n v\u1edbi nh\u1eefng ng\u01b0\u1eddi c\u1ea7n n\u00f3. Sao ch\u00e9p d\u1eef li\u1ec7u l\u00e0 m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c h\u1eefu \u00edch \u0111\u1ec3 kh\u1eafc ph\u1ee5c \u0111\u1ed9 tr\u1ec5 m\u1ea1ng v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t truy c\u1eadp c\u1ee5c b\u1ed9.<\/li>\n<li>Ph\u00e2n t\u00edch th\u1eddi gian th\u1ef1c l\u00e0 \u0111i\u1ec1u kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 t\u1ea1o n\u00ean l\u1ee3i th\u1ebf c\u1ea1nh tranh, v\u00ec v\u1eady, c\u00e1c nh\u00e0 qu\u1ea3n l\u00fd ng\u00e0nh kinh doanh mu\u1ed1n ch\u1ea1y c\u00e1c truy v\u1ea5n v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean c\u00e1c giao d\u1ecbch hi\u1ec7n t\u1ea1i (current transactions). \u0110\u1ec3 gi\u1eef cho c\u00e1c truy v\u1ea5n \u0111\u00f3 kh\u00f4ng g\u00e2y g\u00e1nh n\u1eb7ng cho ngu\u1ed3n, qu\u1ea3n tr\u1ecb vi\u00ean t\u1ea1o v\u00e0 duy tr\u00ec c\u00e1c b\u1ea3n sao \u0111\u1ec3 c\u00e1c nh\u00e0 ph\u00e2n t\u00edch s\u1eed d\u1ee5ng v\u00e0 gi\u1ea3m t\u1ea3i c\u00f4ng vi\u1ec7c kh\u1ecfi c\u01a1 s\u1edf d\u1eef li\u1ec7u s\u1ea3n xu\u1ea5t (production database).<\/li>\n<\/ul>\n<p>H\u00ecnh \u1ea3nh d\u01b0\u1edbi \u0111\u00e2y m\u00f4 t\u1ea3 ki\u1ebfn tr\u00fac sao ch\u00e9p d\u1ef1a tr\u00ean nh\u1eadt k\u00fd (log-based replication architecture), v\u1edbi d\u1eef li\u1ec7u truy\u1ec1n t\u1eeb ngu\u1ed3n t\u1edbi \u0111\u00edch v\u00e0 cloud.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-513 size-full\" src=\"https:\/\/s38063.pcdn.co\/wp-content\/uploads\/2021\/09\/data-replication14.png\" sizes=\"(max-width: 542px) 100vw, 542px\" srcset=\"https:\/\/s38063.pcdn.co\/wp-content\/uploads\/2021\/09\/data-replication14.png 542w, https:\/\/s38063.pcdn.co\/wp-content\/uploads\/2021\/09\/data-replication14-300x130.png 300w\" alt=\"Data replication \u2014 log-based replication architecture\" width=\"542\" height=\"235\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Sao ch\u00e9p \u0111\u1ed3ng b\u1ed9 v\u00e0 sao ch\u00e9p kh\u00f4ng \u0111\u1ed3ng b\u1ed9 (Synchronous vs. asynchronous replication)<\/strong><\/p>\n<p>Sao ch\u00e9p d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u1ed3ng b\u1ed9, trong \u0111\u00f3 d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u v\u1ecb tr\u00ed lu\u00f4n \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a v\u00e0 m\u1ed9t thay \u0111\u1ed5i kh\u00f4ng \u0111\u01b0\u1ee3c coi l\u00e0 ho\u00e0n t\u1ea5t cho \u0111\u1ebfn khi n\u00f3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n xong tr\u00ean c\u1ea3 ngu\u1ed3n v\u00e0 \u0111\u00edch; ho\u1eb7c kh\u00f4ng \u0111\u1ed3ng b\u1ed9, khi c\u00e1c thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi ngu\u1ed3n v\u00e0 \u0111\u00edch l\u00e0 \u0111\u1ed9c l\u1eadp v\u00e0 c\u00e1c thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi \u0111\u00edch c\u00f3 th\u1ec3 b\u1ecb tr\u00ec ho\u00e3n.<\/p>\n<p>Th\u00f4ng th\u01b0\u1eddng, vi\u1ec7c sao ch\u00e9p \u0111\u1ed3ng b\u1ed9 s\u1ebd t\u1ed1n nhi\u1ec1u t\u00e0i nguy\u00ean h\u01a1n v\u00e0 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u1eafc ngh\u1ebdn hi\u1ec7u su\u1ea5t. Sao ch\u00e9p \u0111\u1ed3ng b\u1ed9 thi\u1ebft l\u1eadp m\u1ed9t t\u00ecnh hu\u1ed1ng \u201ccam k\u1ebft hai giai \u0111o\u1ea1n\u201d, trong \u0111\u00f3 d\u1eef li\u1ec7u s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c coi l\u00e0 s\u1eb5n s\u00e0ng \u1edf t\u1ea5t c\u1ea3 cho \u0111\u1ebfn khi d\u1eef li\u1ec7u s\u1eb5n s\u00e0ng \u1edf m\u1ecdi v\u1ecb. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t khi x\u1eed l\u00fd giao d\u1ecbch tr\u1ef1c tuy\u1ebfn ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng nh\u1ea1y c\u1ea3m v\u1edbi th\u1eddi gian kh\u00e1c. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng n\u1eb1m c\u00e1ch xa nhau, v\u00ec d\u1eef li\u1ec7u ch\u01b0a th\u1ec3 di chuy\u1ec3n nhanh h\u01a1n t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng.<\/p>\n<p>Sao ch\u00e9p \u0111\u1ed3ng b\u1ed9 th\u01b0\u1eddng ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi h\u1eadu qu\u1ea3 c\u1ee7a vi\u1ec7c d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a ho\u1eb7c b\u1ecb m\u1ea5t cao h\u01a1n chi ph\u00ed li\u00ean quan. Th\u00f4ng th\u01b0\u1eddng, khi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ghi m\u1ed9t l\u1ea7n, n\u00f3 \u0111\u01b0\u1ee3c coi l\u00e0 an to\u00e0n, v\u00e0 c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn m\u1ed9t kho\u1ea3ng tr\u1ec5 ng\u1eafn gi\u1eefa ngu\u1ed3n v\u00e0 \u0111\u00edch. V\u1edbi ph\u1ea7n m\u1ec1m v\u00e0 ph\u1ea7n c\u1ee9ng t\u1ed1i \u01b0u h\u00f3a ng\u00e0y nay, sao ch\u00e9p kh\u00f4ng \u0111\u1ed3ng b\u1ed9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>T\u1ea1i sao data replication l\u1ea1i quan tr\u1ecdng?<\/strong><\/p>\n<p><a href=\"https:\/\/www.quest.com\/solutions\/replication\/\">C\u00f4ng ngh\u1ec7 sao ch\u00e9p d\u1eef li\u1ec7u<\/a>\u00a0cho ph\u00e9p t\u1ed5 ch\u1ee9c c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng c\u01a1 s\u1edf d\u1eef li\u1ec7u \u1edf hai, n\u0103m ho\u1eb7c nhi\u1ec1u n\u01a1i c\u00f9ng m\u1ed9t l\u00fac.<\/p>\n<p>So, why is replication so important? I\u2019ll explain how you can replicate data to your advantage in three important areas:<\/p>\n<p>V\u1eady, t\u1ea1i sao sao ch\u00e9p d\u1eef li\u1ec7u l\u1ea1i quan tr\u1ecdng \u0111\u1ebfn v\u1eady? T\u00f4i s\u1ebd gi\u1ea3i th\u00edch cho b\u1ea1n l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c sao ch\u00e9p d\u1eef li\u1ec7u trong ba l\u0129nh v\u1ef1c quan tr\u1ecdng sau:<\/p>\n<ul>\n<li>Ph\u00e2n t\u00edch v\u00e0 b\u00e1o<\/li>\n<li>N\u00e2ng c\u1ea5p v\u00e0 di chuy\u1ec3n<\/li>\n<li>T\u00ednh s\u1eb5n s\u00e0ng cao v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda (High availability and disaster recover)<\/li>\n<li>Chuy\u1ec3n \u0111\u1ed5i giao d\u1ecbch th\u00e0nh s\u1ef1 ki\u1ec7n (Translate transactions into event)<\/li>\n<\/ul>\n<p><strong>Ph\u00e2n t\u00edch v\u00e0 b\u00e1o c\u00e1o<\/strong><\/p>\n<p>B\u1ea1n n\u00f3i: \u201cSao ch\u00e9p kh\u00f4ng ph\u1ea3i l\u00e0 v\u1ea5n \u0111\u1ec1 l\u1edbn\u201d. \u201cT\u00f4i c\u00f3 th\u1ec3 g\u1eedi m\u1ed9t t\u1ec7p d\u1eef li\u1ec7u qua email cho 20 ng\u01b0\u1eddi. Sau \u0111\u00f3, t\u00f4i s\u1ebd c\u00f3 d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh \u1edf 20 n\u01a1i c\u00f9ng l\u00fac.\u201d<\/p>\n<p>\u0110\u00fang. Nh\u01b0ng \u0111i\u1ec1u g\u00ec s\u1ebd x\u1ea3y ra n\u1ebfu \u0111\u00f3 l\u00e0 d\u1eef li\u1ec7u b\u00e1n h\u00e0ng lu\u00f4n thay \u0111\u1ed5i t\u1eeb trang th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed c\u1ee7a b\u1ea1n ho\u1eb7c d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c d\u1ef1a tr\u00ean ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng c\u1ee7a c\u00f4ng ty b\u1ea1n? V\u00e0o th\u1eddi \u0111i\u1ec3m ng\u01b0\u1eddi nh\u1eadn m\u1edf t\u1ec7p d\u1eef li\u1ec7u v\u00e0 b\u1eaft \u0111\u1ea7u ph\u00e2n t\u00edch, h\u1ecd s\u1ebd l\u00e0m vi\u1ec7c v\u1edbi d\u1eef li\u1ec7u c\u0169. \u0110i\u1ec1u n\u00e0y gi\u1ed1ng nh\u01b0 \u0111\u1ecdc m\u1ed9t t\u1edd b\u00e1o gi\u1ea5y: H\u1ecd nghi\u00ean c\u1ee9u d\u1eef li\u1ec7u trong t\u1ec7p c\u00e0ng l\u00e2u th\u00ec d\u1eef li\u1ec7u c\u00e0ng \u00edt \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt. B\u1ea1n s\u1ebd ph\u1ea3i g\u1eedi t\u1ec7p c\u1eadp nh\u1eadt m\u1ed7i khi c\u00f3 giao d\u1ecbch m\u1edbi ho\u1eb7c giao d\u1ecbch b\u1ecb thay \u0111\u1ed5i.<\/p>\n<p>B\u00ean c\u1ea1nh \u0111\u00f3, vi\u1ec7c g\u1eedi m\u1ed9t t\u1ec7p d\u1eef li\u1ec7u kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng t\u1ed1t. N\u00f3 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi b\u1ea3ng t\u00ednh 100KB ho\u1eb7c 700KB ch\u1ee9a \u0111\u1ea7y d\u1eef li\u1ec7u, nh\u01b0ng c\u01a1 s\u1edf d\u1eef li\u1ec7u 500GB th\u00ec sao? B\u1ea1n kh\u00f4ng th\u1ec3 g\u1eedi n\u00f3 \u0111i m\u1ed7i gi\u1edd.<\/p>\n<p>\u201cTrong tr\u01b0\u1eddng h\u1ee3p \u0111\u00f3,\u201d b\u1ea1n n\u00f3i, \u201ct\u00f4i s\u1ebd cho ph\u00e9p m\u1ecdi ng\u01b0\u1eddi \u0111\u0103ng nh\u1eadp v\u00e0 truy v\u1ea5n production database. Sau \u0111\u00f3, t\u1ea5t c\u1ea3 ch\u00fang t\u00f4i s\u1ebd truy v\u1ea5n v\u00e0 ph\u00e2n t\u00edch ch\u00ednh x\u00e1c c\u00f9ng m\u1ed9t d\u1eef li\u1ec7u t\u1ea1i c\u00f9ng m\u1ed9t th\u1eddi \u0111i\u1ec3m.\u201d<\/p>\n<p>V\u00e2ng, b\u1eb1ng c\u00e1ch \u0111\u00f3 s\u1ebd kh\u00f4ng c\u00f3 ai s\u1eed d\u1ee5ng d\u1eef li\u1ec7u c\u0169.<\/p>\n<p>Tuy nhi\u00ean sau \u0111\u00f3 b\u1ea1n s\u1ebd ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi v\u1ea5n \u0111\u1ec1 t\u1eafc ngh\u1ebdn trong c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh. C\u00e1c b\u00e1o c\u00e1o m\u00e0 b\u1ea1n ch\u1ea1y s\u1ebd c\u1ea1nh tranh v\u1edbi t\u00e0i nguy\u00ean c\u1ee7a m\u00e1y ch\u1ee7 nh\u01b0 b\u1ed9 nh\u1edb v\u00e0 chu k\u1ef3 CPU v\u1edbi c\u00e1c b\u00e1o c\u00e1o m\u00e0 t\u1ea5t c\u1ea3 c\u00e1c nh\u00e0 ph\u00e2n t\u00edch kh\u00e1c \u0111ang ch\u1ea1y. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c gi\u1ea3m hi\u1ec7u su\u1ea5t v\u00e0 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch d\u1eef li\u1ec7u. V\u00e0 t\u1ea5t c\u1ea3 nh\u1eefng b\u00e1o c\u00e1o \u0111\u00f3 s\u1ebd c\u1ea1nh tranh v\u1edbi c\u00e1c transaction c\u1ee7a nh\u1eefng kh\u00e1ch h\u00e0ng ng\u01b0\u1eddi tr\u1ea3 l\u01b0\u01a1ng cho b\u1ea1n v\u00e0 gi\u00fap c\u00f4ng ty duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng kinh doanh.<\/p>\n<div class=\"flex flex-grow flex-col max-w-full\">\n<div class=\"min-h-[20px] text-message flex flex-col items-start whitespace-pre-wrap break-words [.text-message+&amp;]:mt-5 juice:w-full juice:items-end overflow-x-auto gap-3\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"b1d09e8b-5340-43df-a585-1f1b06ffe3e8\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p>Sao ch\u00e9p d\u1eef li\u1ec7u l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 h\u01a1n, tinh t\u1ebf h\u01a1n \u0111\u1ec3 \u0111\u01b0a d\u1eef li\u1ec7u g\u1ea7n th\u1eddi gian th\u1ef1c t\u1edbi c\u00e1c nh\u00e0 ph\u00e2n t\u00edch s\u1eed d\u1ee5ng ch\u00fang.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>N\u00e2ng c\u1ea5p v\u00e0 di chuy\u1ec3n<\/strong><\/p>\n<p>Trong trung t\u00e2m d\u1eef li\u1ec7u, vi\u1ec7c th\u1ef1c hi\u1ec7n c\u00e1c qu\u00e1 tr\u00ecnh di chuy\u1ec3n ho\u1eb7c n\u00e2ng c\u1ea5p l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi c\u1ee7a vi\u1ec7c qu\u1ea3n l\u00fd h\u1ea1 t\u1ea7ng IT. Tuy nhi\u00ean, trong qu\u00e1 tr\u00ecnh n\u00e0y, s\u1ef1 li\u00ean t\u1ee5c c\u1ee7a ho\u1ea1t \u0111\u1ed9ng kinh doanh l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. Kh\u00e1ch h\u00e0ng v\u00e0 ng\u01b0\u1eddi d\u00f9ng mong mu\u1ed1n c\u00f3 th\u1ec3 truy c\u1eadp d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng g\u1eb7p b\u1ea5t k\u1ef3 gi\u00e1n \u0111o\u1ea1n n\u00e0o, h\u1ecd kh\u00f4ng quan t\u00e2m \u0111\u1ebfn vi\u1ec7c h\u1ec7 th\u1ed1ng \u0111ang tr\u1ea3i qua c\u00e1c qu\u00e1 tr\u00ecnh c\u1ea3i ti\u1ebfn hay thay \u0111\u1ed5i.<\/p>\n<p>&#8220;Kh\u00f4ng v\u1ea5n \u0111\u1ec1 g\u00ec,&#8221; b\u1ea1n n\u00f3i. &#8220;Khi ch\u00fang t\u00f4i di chuy\u1ec3n\/n\u00e2ng c\u1ea5p, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 sao l\u01b0u c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh v\u00e0 kh\u00f4i ph\u1ee5c ch\u00fang \u0111\u1ebfn \u0111\u00edch. Khi ch\u00fang t\u00f4i c\u00f3 t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u \u1edf hai n\u01a1i, ch\u00fang t\u00f4i s\u1ebd b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh di chuy\u1ec3n\/n\u00e2ng c\u1ea5p. Sau \u0111\u00f3, ngay khi ho\u00e0n th\u00e0nh, ch\u00fang t\u00f4i s\u1ebd ch\u1ec9 \u0111\u1ecbnh t\u1ea5t c\u1ea3 ng\u01b0\u1eddi d\u00f9ng c\u1ee7a m\u00ecnh \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng m\u1edbi.<\/p>\n<p>Nh\u01b0ng c\u00f2n t\u1ea5t c\u1ea3 c\u00e1c giao d\u1ecbch \u0111\u00e3 \u0111\u01b0\u1ee3c thay \u0111\u1ed5i v\u00e0 th\u00eam v\u00e0o trong th\u1eddi gian ch\u1edd \u0111\u1ee3i th\u00ec sao? B\u1ea1n s\u1ebd m\u1ea5t m\u1ed9t th\u1eddi gian \u0111\u1ec3 l\u00e0m cho m\u00f4i tr\u01b0\u1eddng m\u1edbi \u0111\u1ed3ng b\u1ed9 v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u0169. V\u00e0 b\u1ea1n s\u1ebd l\u00e0m g\u00ec n\u1ebfu g\u1eb7p v\u1ea5n \u0111\u1ec1 \u1edf m\u00f4i tr\u01b0\u1eddng m\u1edbi? B\u1ea1n s\u1ebd ph\u1ea3i kh\u00f4i ph\u1ee5c m\u1ecdi th\u1ee9 v\u1ec1 v\u1ecb tr\u00ed c\u0169 r\u1ed3i th\u1eed l\u1ea1i. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 ho\u1ea1t \u0111\u1ed9ng kinh doanh li\u00ean t\u1ee5c &#8211; \u0111\u00f3 l\u00e0 s\u1ef1 gi\u00e1n \u0111o\u1ea1n v\u00e0 ti\u1ebfp t\u1ee5c trong ho\u1ea1t \u0111\u1ed9ng kinh doanh.<\/p>\n<p>Sao ch\u00e9p d\u1eef li\u1ec7u cho ph\u00e9p b\u1ea1n duy tr\u00ec b\u1ea3n sao ch\u00ednh x\u00e1c, theo th\u1eddi gian th\u1ef1c c\u1ee7a d\u1eef li\u1ec7u s\u1ea3n xu\u1ea5t \u0111\u1ec3 <a href=\"https:\/\/www.quest.com\/products\/shareplex\/migrations-and-upgrades.aspx\">n\u00e2ng c\u1ea5p v\u00e0 di chuy\u1ec3n c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/a> m\u00e0 kh\u00f4ng g\u1eb7p b\u1ea5t c\u1ee9 r\u1ee7i ro n\u00e0o. N\u00f3 gi\u1eef cho ngu\u1ed3n v\u00e0 \u0111\u00edch \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a cho \u0111\u1ebfn khi th\u1eed nghi\u1ec7m ho\u00e0n t\u1ea5t, l\u00fac \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 tin chuy\u1ec3n ng\u01b0\u1eddi d\u00f9ng sang m\u00f4i tr\u01b0\u1eddng m\u1edbi \u0111\u00e3 \u0111\u01b0\u1ee3c n\u00e2ng c\u1ea5p.<\/p>\n<p><strong>T\u00ednh kh\u1ea3 d\u1ee5ng cao (high availability) v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i (disaster recovery)<\/strong><\/p>\n<p>C\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean c\u01a1 s\u1edf d\u1eef li\u1ec7u ch\u1ecbu tr\u00e1ch nhi\u1ec7m \u0111\u1ea3m b\u1ea3o c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru \u0111\u1ed3ng th\u1eddi v\u1eabn ch\u00fa \u00fd \u0111\u1ebfn t\u00ednh kh\u1ea3 d\u1ee5ng cao, kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i v\u00e0 duy tr\u00ec \u0111\u1ed9 tin c\u1eady 99.999% th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng. Th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9t ng\u1ed9t d\u1eabn \u0111\u1ebfn s\u1ef1 m\u1ea5t m\u00e1t v\u1ec1 d\u1ecbch v\u1ee5, d\u1eef li\u1ec7u, ti\u1ec1n b\u1ea1c v\u00e0 kh\u00e1ch h\u00e0ng, v\u00ec v\u1eady c\u00f4ng vi\u1ec7c n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c duy tr\u00ec hi\u1ec7u qu\u1ea3 c\u1ee7a nhi\u1ec1u c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 n\u1ec1n t\u1ea3ng kh\u00e1c nhau. T\u00ednh kh\u1ea3 d\u1ee5ng cao \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u lu\u00f4n s\u1eb5n s\u00e0ng \u0111\u1ec3 s\u1ef1 d\u1ee5ng, v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i sau l\u00e0 bi\u1ec7n ph\u00e1p d\u1ef1 ph\u00f2ng l\u1edbn trong tr\u01b0\u1eddng h\u1ee3p d\u1eef li\u1ec7u \u0111\u1ed9t nhi\u00ean kh\u00f4ng c\u00f2n s\u1eb5n s\u00e0ng.<\/p>\n<p>&#8220;\u201cC\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a ch\u00fang t\u00f4i bao g\u1ed3m c\u00e1c c\u00f4ng c\u1ee5 t\u00edch h\u1ee3p s\u1eb5n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh kh\u1ea3 d\u1ee5ng cao,\u201d b\u1ea1n n\u00f3i, \u201cV\u00e0 ch\u00fang t\u00f4i s\u1eed d\u1ee5ng m\u1ed9t c\u00f4ng c\u1ee5 kh\u00e1c \u0111\u1ec3 duy tr\u00ec c\u00e1c b\u1ea3n sao t\u1eeb xa nh\u1eb1m ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda. \u0110\u00f3 l\u00e0 c\u00e1ch ch\u00fang t\u00f4i gi\u1eef d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh \u1edf nhi\u1ec1u n\u01a1i kh\u00e1c nhau.\u201d<\/p>\n<p>Tuy nhi\u00ean, c\u00e1c c\u00f4ng c\u1ee5 t\u00edch h\u1ee3p s\u1eb5n th\u01b0\u1eddng \u0111\u1eaft \u0111\u1ecf so v\u1edbi ch\u1ee9c n\u0103ng h\u1ea1n ch\u1ebf m\u00e0 ch\u00fang cung c\u1ea5p v\u00e0 m\u1ed9t s\u1ed1 v\u1eabn c\u00f3 &#8220;a single point of failure&#8221; \u2014 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u chung. N\u1ebfu c\u00f3 s\u1ef1 c\u1ed1 x\u1ea3y ra v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u00f3, h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n s\u1ebd b\u1ecb ng\u1eebng ho\u1ea1t \u0111\u1ed9ng trong khi b\u1ea1n kh\u00f4i ph\u1ee5c. Ngo\u00e0i ra, m\u1ed9t b\u1ea3n copy kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t b\u1ea3n sao ch\u00e9p th\u1ef1c s\u1ef1. M\u1ed9t b\u1ea3n copy ch\u1ec9 l\u00e0 m\u1ed9t \u1ea3nh ch\u1ee5p nhanh (snapshot), v\u00e0 snapshot c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u s\u1ebd tr\u1edf n\u00ean l\u1ed7i th\u1eddi ngay khi c\u00f3 m\u1ed9t giao d\u1ecbch m\u1edbi di\u1ec5n ra.<\/p>\n<p>M\u1eb7t kh\u00e1c, m\u1ed9t b\u1ea3n sao th\u1ef1c s\u1ef1 mang l\u1ea1i cho b\u1ea1n t\u00ednh s\u1eb5n s\u00e0ng cao. Sao ch\u00e9p c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n c\u00f3 c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f3 th\u1ec3 ngay l\u1eadp t\u1ee9c thay th\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00e1c trong tr\u01b0\u1eddng h\u1ee3p x\u1ea3y ra l\u1ed7i.<\/p>\n<p>V\u1edbi vi\u1ec7c sao ch\u00e9p d\u1eef li\u1ec7u, b\u1ea1n s\u1ebd \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u00ednh s\u1eb5n s\u00e0ng cao v\u00e0 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda. B\u1ea3n sao cho ph\u00e9p b\u1ea1n chuy\u1ec3n ng\u01b0\u1eddi d\u00f9ng sang h\u1ec7 th\u1ed1ng ph\u1ee5 trong th\u1eddi gian b\u1ea3o tr\u00ec ho\u1eb7c ng\u1eebng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 duy tr\u00ec production database c\u1ee7a b\u1ea1n. \u1ee8ng d\u1ee5ng c\u1ee7a b\u1ea1n kh\u00f4ng ph\u1ea3i \u0111\u1ee3i b\u1ea1n t\u1ea1o b\u1ea3n sao c\u1ee7a to\u00e0n b\u1ed9 c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u1eafc ph\u1ee5c th\u1ea3m h\u1ecda, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n s\u1ebd kh\u00f4ng b\u1ecb m\u1ea5t c\u00e1c giao d\u1ecbch. Th\u00eam v\u00e0o \u0111\u00f3, s\u1ea3n ph\u1ea9m c\u00f3 t\u00ednh kh\u1ea3 d\u1ee5ng cao ph\u00f9 h\u1ee3p cho ph\u00e9p b\u1ea1n s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u cho vi\u1ec7c ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda, gi\u00fap b\u1ea1n duy tr\u00ec t\u00ednh li\u00ean t\u1ee5c c\u1ee7a d\u1ecbch v\u1ee5 m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft l\u1eadp m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u d\u1ef1 ph\u00f2ng ri\u00eang bi\u1ec7t<\/p>\n<p><strong>Chuy\u1ec3n c\u00e1c transaction th\u00e0nh event<\/strong><\/p>\n<p>Trong m\u00f4i tr\u01b0\u1eddng kinh doanh chuy\u1ec3n \u0111\u1ed9ng nhanh ng\u00e0y nay, ng\u00e0y c\u00e0ng c\u00f3 nhi\u1ec1u c\u00f4ng ty chuy\u1ec3n sang c\u00e1c d\u1ecbch v\u1ee5 ph\u00e1t tr\u1ef1c tuy\u1ebfn, ch\u1eb3ng h\u1ea1n nh\u01b0 Kafka ho\u1eb7c Azure Event Hub, \u0111\u1ec3 theo d\u00f5i c\u00e1c s\u1ef1 ki\u1ec7n \u0111ang di\u1ec5n ra trong th\u1eddi gian th\u1ef1c, t\u1ea1i x\u01b0\u1edfng s\u1ea3n xu\u1ea5t ho\u1eb7c s\u00e0n b\u00e1n h\u00e0ng. B\u1ea3n sao c\u00f3 th\u1ec3 bi\u1ebfn b\u1ea3n ghi b\u00e1n h\u00e0ng ho\u1eb7c m\u00e1y \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n th\u00e0nh m\u1ed9t s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd trong th\u1eddi gian th\u1ef1c, cho ph\u00e9p kh\u00e1ch h\u00e0ng th\u00eam ti\u1ec1n boa ho\u1eb7c m\u00e1y c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o tr\u00ec.<\/p>\n<p>Ngu\u1ed3n: <a href=\"https:\/\/blog.quest.com\/data-replication-what-is-it-and-what-are-the-advantages-of-using-it\/\">https:\/\/blog.quest.com\/data-replication-what-is-it-and-what-are-the-advantages-of-using-it\/<\/a><\/p>\n<p>&nbsp;<\/p>\n<p><strong>V\u1ec1 DT Asia<\/strong><\/p>\n<p>DT Asia \u0111\u01b0\u1ee3c th\u00e0nh l\u1eadp n\u0103m 2007 v\u1edbi s\u1ee9 m\u1ec7nh \u0111\u01b0a c\u00e1c gi\u1ea3i ph\u00e1p b\u1ea3o m\u1eadt CNTT ti\u00ean phong kh\u00e1c nhau t\u1eeb Hoa K\u1ef3, Ch\u00e2u \u00c2u v\u00e0 Israel gia nh\u1eadp th\u1ecb tr\u01b0\u1eddng.<\/p>\n<p>Hi\u1ec7n t\u1ea1i, DT Asia \u0111\u00e3 l\u00e0 m\u1ed9t nh\u00e0 ph\u00e2n ph\u1ed1i gi\u00e1 tr\u1ecb gia t\u0103ng trong khu v\u1ef1c \u0111\u1ed1i v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p an ninh m\u1ea1ng, cung c\u1ea5p c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn cho c\u00e1c t\u1ed5 ch\u1ee9c ch\u00ednh ph\u1ee7 tr\u1ecdng y\u1ebfu c\u0169ng nh\u01b0 c\u00e1c kh\u00e1ch h\u00e0ng t\u01b0 nh\u00e2n l\u1edbn bao g\u1ed3m c\u00e1c ng\u00e2n h\u00e0ng to\u00e0n c\u1ea7u v\u00e0 c\u00e1c c\u00f4ng ty trong danh s\u00e1ch Fortune 500. V\u1edbi c\u00e1c v\u0103n ph\u00f2ng v\u00e0 \u0111\u1ed1i t\u00e1c r\u1ed9ng kh\u1eafp trong khu v\u1ef1c Ch\u00e2u \u00c1 Th\u00e1i B\u00ecnh D\u01b0\u01a1ng, ch\u00fang t\u00f4i hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 th\u1ecb tr\u01b0\u1eddng v\u00e0 t\u1eeb \u0111\u00f3 mang \u0111\u1ebfn nh\u1eefng gi\u1ea3i ph\u00e1p b\u1ea3n \u0111\u1ecba h\u00f3a ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng qu\u1ed1c gia, t\u1eebng t\u1ed5 ch\u1ee9c.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Data replication \u0111\u00e3 chuy\u1ec3n t\u1eeb \u201cc\u00f3 th\u00ec t\u1ed1t\u201d tr\u1edf th\u00e0nh \u201cxu th\u1ebf ch\u1ee7 \u0111\u1ea1o\u201d cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng nh\u01b0 T\u00ednh kh\u1ea3 d\u1ee5ng cao (High Availability) v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i (Disaster Recovery). \u0110\u1ed3ng th\u1eddi, c\u00e1c c\u00f4ng ty nh\u1eadn th\u1ea5y nhu c\u1ea7u sao ch\u00e9p ho\u1eb7c di chuy\u1ec3n d\u1eef li\u1ec7u v\u00ec nhi\u1ec3u l\u00fd do kh\u00e1c, bao g\u1ed3m hi\u1ec7u su\u1ea5t v\u00e0 chuy\u1ec3n \u0111\u1ed5i c\u00e1c transactional data th\u00e0nh c\u00e1c event.<\/p>\n","protected":false},"author":11,"featured_media":13721,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79,63,62],"tags":[],"class_list":["post-13775","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bai-viet","category-announcements-vi","category-uncategorized-vi"],"_links":{"self":[{"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/posts\/13775","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/comments?post=13775"}],"version-history":[{"count":0,"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/posts\/13775\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/media\/13721"}],"wp:attachment":[{"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/media?parent=13775"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/categories?post=13775"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dtasiagroup.com\/vi\/wp-json\/wp\/v2\/tags?post=13775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}