{"id":579776,"date":"2023-12-28T03:11:27","date_gmt":"2023-12-28T03:11:27","guid":{"rendered":"https:\/\/proxyelite.info\/glossary\/redundancy\/"},"modified":"2023-12-28T03:11:27","modified_gmt":"2023-12-28T03:11:27","slug":"redundancy","status":"publish","type":"glossary","link":"https:\/\/proxyelite.info\/vi\/glossary\/redundancy\/","title":{"rendered":"D\u01b0"},"content":{"rendered":"<p>D\u1ef1 ph\u00f2ng, trong b\u1ed1i c\u1ea3nh c\u00f4ng ngh\u1ec7 th\u00f4ng tin v\u00e0 h\u1ec7 th\u1ed1ng m\u1ea1ng, \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ef1 tr\u00f9ng l\u1eb7p c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n ho\u1eb7c ch\u1ee9c n\u0103ng quan tr\u1ecdng c\u1ee7a h\u1ec7 th\u1ed1ng v\u1edbi m\u1ee5c \u0111\u00edch t\u0103ng \u0111\u1ed9 tin c\u1eady, c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o sao l\u01b0u trong tr\u01b0\u1eddng h\u1ee3p x\u1ea3y ra l\u1ed7i.<\/p>\n<h2>Kh\u00e1m ph\u00e1 kh\u00e1i ni\u1ec7m v\u1ec1 s\u1ef1 d\u01b0 th\u1eeba<\/h2>\n<p>D\u1ef1 ph\u00f2ng l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n trong vi\u1ec7c thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u00e1ng tin c\u1eady, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng. N\u00f3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c t\u1ea1o ra m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 nhi\u1ec1u th\u00e0nh ph\u1ea7n h\u01a1n m\u1ee9c c\u1ea7n thi\u1ebft \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c ch\u1ee9c n\u0103ng c\u1ea7n thi\u1ebft trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng. Dung l\u01b0\u1ee3ng b\u1ed5 sung n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 cung c\u1ea5p ph\u01b0\u01a1ng \u00e1n d\u1ef1 ph\u00f2ng trong tr\u01b0\u1eddng h\u1ee3p m\u1ed9t ph\u1ea7n n\u00e0o \u0111\u00f3 c\u1ee7a h\u1ec7 th\u1ed1ng b\u1ecb l\u1ed7i ho\u1eb7c b\u1ecb qu\u00e1 t\u1ea3i. D\u1ef1 ph\u00f2ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u01b0\u1edbi nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau nh\u01b0 ph\u1ea7n c\u1ee9ng, ph\u1ea7n m\u1ec1m ho\u1eb7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u d\u1ef1 ph\u00f2ng.<\/p>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a d\u1ef1 ph\u00f2ng<\/h2>\n<ol>\n<li><strong>Dung sai l\u1ed7i<\/strong>: D\u1ef1 ph\u00f2ng r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i, trong \u0111\u00f3 h\u1ec7 th\u1ed1ng ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng, c\u00f3 th\u1ec3 \u1edf m\u1ee9c \u0111\u1ed9 gi\u1ea3m h\u01a1n l\u00e0 h\u1ecfng ho\u00e0n to\u00e0n khi m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n c\u1ee7a n\u00f3 g\u1eb7p tr\u1ee5c tr\u1eb7c.<\/li>\n<li><strong>T\u00ednh s\u1eb5n s\u00e0ng cao<\/strong>: C\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u1ef1 ph\u00f2ng c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u00ednh s\u1eb5n s\u00e0ng cao h\u01a1n, \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng lu\u00f4n ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c khi c\u1ea7n.<\/li>\n<li><strong>C\u00e2n b\u1eb1ng t\u1ea3i<\/strong>: C\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1 ph\u00f2ng c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c tr\u00ean nhi\u1ec1u th\u00e0nh ph\u1ea7n, ng\u0103n kh\u00f4ng cho b\u1ea5t k\u1ef3 b\u1ed9 ph\u1eadn n\u00e0o b\u1ecb qu\u00e1 t\u1ea3i.<\/li>\n<li><strong>T\u00ednh to\u00e0n v\u1eb9n v\u00e0 sao l\u01b0u d\u1eef li\u1ec7u<\/strong>: Trong l\u01b0u tr\u1eef v\u00e0 qu\u1ea3n l\u00fd d\u1eef li\u1ec7u, t\u00ednh n\u0103ng d\u1ef1 ph\u00f2ng s\u1ebd b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u kh\u1ecfi b\u1ecb m\u1ea5t v\u00e0 h\u1ecfng.<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i d\u1ef1 ph\u00f2ng<\/h2>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<th>V\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>D\u1ef1 ph\u00f2ng ph\u1ea7n c\u1ee9ng<\/td>\n<td>S\u1eed d\u1ee5ng nhi\u1ec1u th\u00e0nh ph\u1ea7n v\u1eadt l\u00fd \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00f9ng m\u1ed9t ch\u1ee9c n\u0103ng.<\/td>\n<td>Nhi\u1ec1u m\u00e1y ch\u1ee7, li\u00ean k\u1ebft m\u1ea1ng tr\u00f9ng l\u1eb7p.<\/td>\n<\/tr>\n<tr>\n<td>D\u1ef1 ph\u00f2ng ph\u1ea7n m\u1ec1m<\/td>\n<td>Sao ch\u00e9p t\u00e0i nguy\u00ean ho\u1eb7c quy tr\u00ecnh ph\u1ea7n m\u1ec1m.<\/td>\n<td>Ch\u1ea1y c\u00f9ng m\u1ed9t \u1ee9ng d\u1ee5ng tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7.<\/td>\n<\/tr>\n<tr>\n<td>D\u1eef li\u1ec7u d\u1ef1 ph\u00f2ng<\/td>\n<td>L\u01b0u tr\u1eef c\u00f9ng m\u1ed9t d\u1eef li\u1ec7u \u1edf nhi\u1ec1u v\u1ecb tr\u00ed.<\/td>\n<td>H\u1ec7 th\u1ed1ng RAID, ph\u1ea3n chi\u1ebfu d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n<tr>\n<td>D\u1ef1 ph\u00f2ng \u0111\u1ecba l\u00fd<\/td>\n<td>Ph\u00e2n ph\u1ed1i t\u00e0i nguy\u00ean tr\u00ean c\u00e1c v\u1ecb tr\u00ed v\u1eadt l\u00fd kh\u00e1c nhau.<\/td>\n<td>Trung t\u00e2m d\u1eef li\u1ec7u n\u1eb1m \u1edf c\u00e1c khu v\u1ef1c kh\u00e1c nhau.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u1ee8ng d\u1ee5ng v\u00e0 th\u00e1ch th\u1ee9c<\/h2>\n<h3>C\u00e1c \u1ee9ng d\u1ee5ng<\/h3>\n<ul>\n<li><strong>H\u1ec7 th\u1ed1ng m\u1ea1ng<\/strong>: \u0110\u1ea3m b\u1ea3o t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a m\u1ea1ng li\u00ean t\u1ee5c.<\/li>\n<li><strong>C\u00e1c trung t\u00e2m d\u1eef li\u1ec7u<\/strong>: Duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n v\u00e0 s\u1eb5n c\u00f3 c\u1ee7a d\u1eef li\u1ec7u.<\/li>\n<li><strong>Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed<\/strong>: Cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn nh\u1ea5t qu\u00e1n v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/li>\n<\/ul>\n<h3>Nh\u1eefng th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li><strong>\u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/strong>: H\u1ec7 th\u1ed1ng d\u1ef1 ph\u00f2ng c\u00f3 th\u1ec3 ph\u1ee9c t\u1ea1p \u0111\u1ec3 thi\u1ebft l\u1eadp v\u00e0 qu\u1ea3n l\u00fd. <em>Gi\u1ea3i ph\u00e1p<\/em>: S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 qu\u1ea3n l\u00fd t\u1ef1 \u0111\u1ed9ng.<\/li>\n<li><strong>Tr\u1ecb gi\u00e1<\/strong>: S\u1ef1 d\u01b0 th\u1eeba th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn chi ph\u00ed b\u1ed5 sung. <em>Gi\u1ea3i ph\u00e1p<\/em>: Ph\u00e2n t\u00edch chi ph\u00ed-l\u1ee3i \u00edch \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ee9c d\u1ef1 ph\u00f2ng t\u1ed1i \u01b0u.<\/li>\n<\/ul>\n<h2>Ph\u00e2n t\u00edch so s\u00e1nh<\/h2>\n<table>\n<thead>\n<tr>\n<th>T\u00ednh n\u0103ng<\/th>\n<th>D\u01b0<\/th>\n<th>H\u1ec7 th\u1ed1ng kh\u00f4ng d\u01b0 th\u1eeba<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0111\u1ed9 tin c\u1eady<\/td>\n<td>Cao<\/td>\n<td>Trung b\u00ecnh \u0111\u1ebfn th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>Tr\u1ecb gi\u00e1<\/td>\n<td>\u0110\u1ea7u t\u01b0 ban \u0111\u1ea7u cao h\u01a1n<\/td>\n<td>\u0110\u1ea7u t\u01b0 ban \u0111\u1ea7u th\u1ea5p h\u01a1n<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/td>\n<td>Ph\u1ee9c t\u1ea1p h\u01a1n<\/td>\n<td>\u0110\u01a1n gi\u1ea3n h\u01a1n<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/td>\n<td>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng cao<\/td>\n<td>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng h\u1ea1n ch\u1ebf<\/td>\n<\/tr>\n<tr>\n<td>Hi\u1ec7u su\u1ea5t<\/td>\n<td>C\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 c\u00f3 hi\u1ec7u su\u1ea5t cao h\u01a1n<\/td>\n<td>Ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u01a1n l\u1ebb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai<\/h2>\n<p>D\u1ef1 ph\u00f2ng d\u1ef1 ki\u1ebfn s\u1ebd ph\u00e1t tri\u1ec3n v\u1edbi nh\u1eefng ti\u1ebfn b\u1ed9 trong c\u00f4ng ngh\u1ec7. Xu h\u01b0\u1edbng trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Qu\u1ea3n l\u00fd d\u1ef1 ph\u00f2ng t\u1ef1 \u0111\u1ed9ng<\/strong>: S\u1eed d\u1ee5ng AI v\u00e0 h\u1ecdc m\u00e1y \u0111\u1ec3 qu\u1ea3n l\u00fd hi\u1ec7u qu\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1 ph\u00f2ng.<\/li>\n<li><strong>D\u1ef1 ph\u00f2ng d\u1ef1a tr\u00ean \u0111\u00e1m m\u00e2y<\/strong>: T\u0103ng c\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y \u0111\u1ec3 d\u1ef1 ph\u00f2ng d\u1eef li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng.<\/li>\n<li><strong>D\u1ef1 ph\u00f2ng ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng<\/strong>: Ph\u00e1t tri\u1ec3n c\u00e1c c\u00e1ch ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng h\u01a1n \u0111\u1ec3 duy tr\u00ec c\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1 ph\u00f2ng.<\/li>\n<\/ul>\n<h2>Vai tr\u00f2 c\u1ee7a m\u00e1y ch\u1ee7 proxy trong d\u1ef1 ph\u00f2ng<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c tri\u1ec3n khai d\u1ef1 ph\u00f2ng trong h\u1ec7 th\u1ed1ng m\u1ea1ng. Ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3:<\/p>\n<ul>\n<li><strong>C\u00e2n b\u1eb1ng t\u1ea3i<\/strong>: Ph\u00e2n ph\u1ed1i y\u00eau c\u1ea7u tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7.<\/li>\n<li><strong>C\u01a1 ch\u1ebf chuy\u1ec3n \u0111\u1ed5i d\u1ef1 ph\u00f2ng<\/strong>: T\u1ef1 \u0111\u1ed9ng \u0111\u1ecbnh tuy\u1ebfn l\u1ea1i l\u01b0u l\u01b0\u1ee3ng trong tr\u01b0\u1eddng h\u1ee3p m\u00e1y ch\u1ee7 b\u1ecb l\u1ed7i.<\/li>\n<li><strong>T\u0103ng c\u01b0\u1eddng an ninh<\/strong>: Th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung, ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t v\u00f9ng \u0111\u1ec7m gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 ch\u00ednh.<\/li>\n<\/ul>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin chi ti\u1ebft v\u00e0 th\u00f4ng tin c\u1eadp nh\u1eadt v\u1ec1 d\u1ef1 ph\u00f2ng, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ul>\n<li><a target=\"_new\" rel=\"noopener\">Techopedia: S\u1ef1 d\u01b0 th\u1eeba<\/a><\/li>\n<li><a target=\"_new\" rel=\"noopener\">B\u00e1ch khoa to\u00e0n th\u01b0 v\u1ec1 m\u1ea1ng: T\u00ecm hi\u1ec3u v\u1ec1 s\u1ef1 d\u01b0 th\u1eeba<\/a><\/li>\n<li><a target=\"_new\" rel=\"noopener\">SearchDisasterRecovery: L\u1eadp k\u1ebf ho\u1ea1ch d\u1ef1 ph\u00f2ng<\/a><\/li>\n<\/ul>","protected":false},"featured_media":579777,"menu_order":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-579776","glossary","type-glossary","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/proxyelite.info\/vi\/wp-json\/wp\/v2\/glossary\/579776","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/proxyelite.info\/vi\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/proxyelite.info\/vi\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":0,"href":"https:\/\/proxyelite.info\/vi\/wp-json\/wp\/v2\/glossary\/579776\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/proxyelite.info\/vi\/wp-json\/wp\/v2\/media\/579777"}],"wp:attachment":[{"href":"https:\/\/proxyelite.info\/vi\/wp-json\/wp\/v2\/media?parent=579776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}