{"id":5991,"date":"2012-11-20T00:01:24","date_gmt":"2012-11-19T15:01:24","guid":{"rendered":"http:\/\/arison.jp\/blog\/?p=5991"},"modified":"2018-03-21T09:26:48","modified_gmt":"2018-03-21T00:26:48","slug":"high-availability","status":"publish","type":"post","link":"https:\/\/arison.jp\/blog\/2012\/11\/20\/high-availability\/","title":{"rendered":"\u706b\u66dc\u65e5\u306b\u53ef\u7528\u6027\u3092\u8003\u3048\u308b"},"content":{"rendered":"<p>\u9ad8\u53ef\u7528\u6027\u3010HA\u3011\u30cf\u30a4\u30a2\u30d9\u30a4\u30e9\u30d3\u30ea\u30c6\u30a3\uff08High availability\uff09<\/p>\n<p>\u9ad8\u3044\u53ef\u7528\u6027\u3092\u6301\u3064\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30b7\u30b9\u30c6\u30e0\u306e\u3053\u3068\u3002<\/p>\n<p>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30b7\u30b9\u30c6\u30e0\u306e\u53ef\u7528\u6027\u306f\u3001<br \/>\n\u30b7\u30b9\u30c6\u30e0\u6545\u969c\u304c\u751f\u3058\u308b\u307e\u3067\u3067\u306e\u5e73\u5747\u6642\u9593\u300cMTBF\u300d(Mean Time Between Failure\uff1a\u5e73\u5747\u6545\u969c\u9593\u9694)\u3068\u3001<br \/>\n\u30b7\u30b9\u30c6\u30e0\u306b\u6545\u969c\u304c\u751f\u3058\u3066\u304b\u3089\u5fa9\u65e7\u307e\u3067\u306e\u5e73\u5747\u6240\u8981\u6642\u9593\u300cMTTR\u300d(Mean Time To Repair\uff1a\u5e73\u5747\u4fee\u5fa9\u9593\u9694)\u3067\u8a08\u3089\u308c\u308b\u3002<br \/>\n\u4e21\u8005\u306e\u548c\u306b\u5bfe\u3059\u308bMTBF\u306e\u5272\u5408\u306f\u7a3c\u50cd\u7387\u3068\u547c\u3070\u308c\u3001\u7a3c\u50cd\u7387\u304c\u9ad8\u3044\u307b\u3069\u9ad8\u53ef\u7528\u6027\u3067\u3042\u308b\u3068\u8a00\u3048\u308b\u3002<br \/>\n<!--more--><\/p>\n<p>\u4f01\u696d\u306e\u57fa\u5e79\u30b7\u30b9\u30c6\u30e0\u306f24\u6642\u9593365\u65e5\u4f11\u307f\u306a\u304f\u7a3c\u52d5\u3059\u308b\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u300199.99%\u308499.999%\u3068\u3044\u3063\u305f\u9ad8\u3044\u7a3c\u50cd\u7387\u304c\u5fc5\u8981\u3068\u3055\u308c\u308b\u3002<br \/>\n\u7a3c\u50cd\u7387\u3092\u9ad8\u3081\u308b\u306b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u30c0\u30a6\u30f3\u3092\u8d77\u3053\u308a\u306b\u304f\u304f\u3057\u3001\u307e\u305f\u3001\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u3092\u6700\u5c0f\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<br \/>\n\u5177\u4f53\u7684\u306b\u306f\u3001\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u3084\u591a\u91cd\u5316\u3001\u81ea\u52d5\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u30db\u30c3\u30c8\u30b9\u30ef\u30c3\u30d7\u306a\u3069\u306e\u6280\u8853\u304c\u4f7f\u308f\u308c\u308b\u3002<\/p>\n<p>24\u6642\u9593365\u65e5<br \/>\n\u7a3c\u50cd\u738799.99%(\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6642\u9593\u3092\u9664\u304f)<br \/>\n\uff08\u53c2\u8003\uff1a\u505c\u6b62\u8a31\u5bb9\u6642\u9593\uff09<br \/>\n\u7a3c\u50cd\u7387 99.9  %\u306e\u5834\u5408\uff1a 8.76 \u6642\u9593<br \/>\n\u7a3c\u50cd\u7387 99.99 %\u306e\u5834\u5408\uff1a52.56 \u5206<br \/>\n\u7a3c\u50cd\u7387 99.999%\u306e\u5834\u5408\uff1a 5.256\u5206<\/p>\n<p>\u3048\u3063\u3068\u3001<strong>99.99%\u306e\u7a3c\u50cd\u7387\u3063\u30661\u5e74\u9593\u30671\u6642\u9593\u3057\u304b\u505c\u6b62\u8a31\u5bb9\u6642\u9593\u306a\u3044<\/strong>\u3093\u3060\u3002<\/p>\n<p>\u3053\u308c\u306f\u30de\u30b8\u3067\u534a\u7aef\u306a\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9ad8\u53ef\u7528\u6027\u3010HA\u3011\u30cf\u30a4\u30a2\u30d9\u30a4\u30e9\u30d3\u30ea\u30c6\u30a3\uff08High availability\uff09 \u9ad8\u3044\u53ef\u7528\u6027\u3092\u6301\u3064\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30b7\u30b9\u30c6\u30e0\u306e\u3053\u3068\u3002 \u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30b7\u30b9\u30c6\u30e0\u306e\u53ef\u7528\u6027\u306f\u3001 \u30b7\u30b9\u30c6\u30e0\u6545\u969c\u304c\u751f\u3058\u308b\u307e\u3067\u3067\u306e\u5e73\u5747\u6642\u9593\u300cMTBF\u300d(Mean Ti [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":24077,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,4],"tags":[208],"class_list":["post-5991","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-work","category-diary","tag-security"],"_links":{"self":[{"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/posts\/5991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/comments?post=5991"}],"version-history":[{"count":0,"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/posts\/5991\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/media\/24077"}],"wp:attachment":[{"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/media?parent=5991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/categories?post=5991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/arison.jp\/blog\/wp-json\/wp\/v2\/tags?post=5991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}