{"id":1338,"date":"2022-09-21T16:33:00","date_gmt":"2022-09-21T07:33:00","guid":{"rendered":"https:\/\/www.hagisol.co.jp\/techblog\/?p=1338"},"modified":"2023-06-15T14:31:52","modified_gmt":"2023-06-15T05:31:52","slug":"post-1338","status":"publish","type":"post","link":"https:\/\/www.hagisol.co.jp\/techblog\/?p=1338","title":{"rendered":"WAF\u3068\u306f\u3000SSD\u306b\u66f8\u304d\u8fbc\u3080\u52b9\u7387\u306e\u91cd\u8981\u6027"},"content":{"rendered":"\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/www.hagisol.co.jp\/form\/contact.php\"><strong>\u304a\u554f\u3044\u5408\u308f\u305b<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<h2 id=\"outline__1\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u3053\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u3066\u3044\u308b\u88fd\u54c1<\/mark><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/www.hagisol.co.jp\/products\/storage\" target=\"_blank\">\u7523\u696d\u7528\u30b9\u30c8\u30ec\u30fc\u30b8\u88fd\u54c1<\/a><\/li>\n<\/ul>\n\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading has-vivid-cyan-blue-color has-text-color\">WAF\u3068\u306f<\/h2>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u6982\u8981<\/strong><\/p>\n\n\n\n<p>WAF\uff08Write Amplification Factor\uff09\u306f\u3001\u65e5\u672c\u8a9e\u3060\u3068\u300c\u66f8\u304d\u8fbc\u307f\u52b9\u7387\u300d\u3068\u8a33\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u30e6\u30fc\u30b6\u30fc\u69d8\uff08\u30db\u30b9\u30c8\uff09\u304c\u66f8\u304d\u8fbc\u307f\u305f\u3044\u30c7\u30fc\u30bf\u91cf\u3068\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u30c7\u30d0\u30a4\u30b9\uff08\u30c7\u30d0\u30a4\u30b9\u5185\u306eNAND Flash\u30e1\u30e2\u30ea\uff09\u306b\u5b9f\u969b\u306b\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3063\u305f\u30c7\u30fc\u30bf\u91cf\u306b\u30ae\u30e3\u30c3\u30d7\u304c\u3042\u308a\u3001\u3053\u306e\u66f8\u304d\u8fbc\u307f\u91cf\u306e\u6bd4\u7387\u3092WAF\u3068\u8a00\u3044\u307e\u3059\u3002<br>\u5168\u304f\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u3058\u306a\u3044\u72b6\u614b\u3092WAF\uff1d1\u3068\u3057\u3066\u3001WAF\uff1d2\u30fb\uff13\u30fb\uff14\uff5e\u3068\u6570\u5b57\u304c\u5927\u304d\u304f\u306a\u308b\u307b\u3069\u66f8\u304d\u8fbc\u307f\u52b9\u7387\u304c\u60aa\u3044\u3068\u3044\u3046\u3053\u3068\u304c\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u5f71\u97ff<\/strong><\/p>\n\n\n\n<p>SSD\u3092\u4ee3\u8868\u3068\u3057\u305fNAND Flash\u30e1\u30e2\u30ea\uff08NAND\uff09\u3092\u4f7f\u7528\u3057\u305f\u30c7\u30d0\u30a4\u30b9\u306f\u88fd\u54c1\u306e\u66f8\u304d\u63db\u3048\u56de\u6570\u306b\u4e0a\u9650\u304c\u3042\u308b\u30c7\u30d0\u30a4\u30b9\u3067\u3059\u3002<br>\u5b9f\u969b\u306b\u306f\u30db\u30b9\u30c8\u304c\u66f8\u304d\u8fbc\u307f\u305f\u3044\u30c7\u30fc\u30bf\u4ee5\u5916\u306b\u3082\u69d8\u3005\u306a\u30c7\u30fc\u30bf\u304c\u66f8\u304d\u8fbc\u307e\u308c\u308b\u305f\u3081\u3001\u88fd\u54c1\u3092\u5e02\u5834\u3067\u4f7f\u7528\u3059\u308b\u524d\u306b\u3001\u52b9\u7387\u306e\u826f\u3044\u66f8\u304d\u8fbc\u307f\u304c\u3067\u304d\u3066\u3044\u308b\u304b\uff1f\u3000\u60f3\u5b9a\u3057\u305f\u671f\u9593\u30c7\u30d0\u30a4\u30b9\u306e\u5bff\u547d\u304c\u6301\u3064\u304b\uff1f\u3000\u306a\u3069\u4e8b\u524d\u306b\u691c\u8a0e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br>\u3053\u306e\u3068\u304dWAF\u3092\u610f\u8b58\u3057\u305f\u4f7f\u3044\u65b9\u3092\u3059\u308b\u3053\u3068\u3067\u3001\u60f3\u5b9a\u3057\u3066\u3044\u305f\u88fd\u54c1\u5bff\u547d\u3068\u5b9f\u4f7f\u7528\u4e0a\u306e\u88fd\u54c1\u5bff\u547d\u306e\u4e56\u96e2\u3092\u6291\u3048\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u8a08\u7b97\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<p>\u30cf\u30ae\u30ef\u30e9\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u30ba\u88fd\u306eSSD\u306f\u30c7\u30d0\u30a4\u30b9\u306e\u69d8\u3005\u306a\u60c5\u5831\u3092SAMRT\u60c5\u5831\u3068\u3057\u3066\u51fa\u529b\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<br>WAF\u3092\u8a08\u7b97\u3059\u308b\u5834\u5408\u306f\u3001ID236\u300c\u30db\u30b9\u30c8\u304cWrite\u3057\u305f\u7dcf\u30bb\u30af\u30bf\u6570\u300d\u3068ID247\u300cNAND\u306bWrite\u3057\u305f\u7dcf\u30bb\u30af\u30bf\u6570\u300d\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002\u203b1<br>\u30db\u30b9\u30c8\u304c\u30c7\u30d0\u30a4\u30b9\u306b\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3063\u305f\u30bb\u30af\u30bf\u6570\u3092\u3001\u30c7\u30d0\u30a4\u30b9\uff08SSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\uff09\u304cNAND\u306b\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3063\u305f\u30bb\u30af\u30bf\u6570\u3067\u5272\u308b\u3053\u3068\u3067\u3001WAF\u304c\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>WAF \uff1d ID247 \u00f7 ID236<\/strong><\/p>\n\n\n\n<p class=\"has-small-font-size\">\u203b1\uff1a\u88fd\u54c1\u30b7\u30ea\u30fc\u30ba\u306b\u3088\u308a\u8868\u793a\u3055\u308c\u308bSMART\u60c5\u5831\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3054\u3056\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\">WAF\u306e\u8a08\u7b97\u4f8b<\/h2>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u4f8b<\/strong><\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306b\u3001\u3042\u308b\u30c7\u30d0\u30a4\u30b9\u3088\u308a\u51fa\u529b\u3057\u305fSMART\u60c5\u5831\u3092\u629c\u7c8b\u3057\u307e\u3057\u305f\u3002<br>\uff08\u4e0d\u8981\u306a\u60c5\u5831\u306f\u524a\u9664\u3057\u3066\u3044\u307e\u3059\u3002\u3054\u4e86\u627f\u304f\u3060\u3055\u3044\u3002\uff09<\/p>\n\n\n\n<p>ID236\uff1a33,830\u30ab\u30a6\u30f3\u30c8\u306b\u5bfe\u3057\u3001ID247\uff1a 44,460\u30ab\u30a6\u30f3\u30c8\u3067\u3042\u308b\u3053\u3068\u304b\u3089\u3001WAF\u306f1.3\u7a0b\u3068\u306a\u308b\u306e\u3067\u3001\u30c7\u30d0\u30a4\u30b9\u306b\u5bfe\u3059\u308b\u66f8\u304d\u8fbc\u307f\u52b9\u7387\u304c\u975e\u5e38\u306b\u826f\u3044\u72b6\u614b\u3068\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">ID<\/th><th>\u9805\u76ee<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u751f\u306e\u5024<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">232<\/td><td>\u30c7\u30fc\u30bf\u79fb\u52d5\u56de\u6570<\/td><td class=\"has-text-align-center\" data-align=\"center\">3958<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">235<\/td><td>HostRead\u30bb\u30af\u30bf\u6570 ( 65536\u30bb\u30af\u30bf\u6bce\u306b1\u56de\u30ab\u30a6\u30f3\u30c8)<\/td><td class=\"has-text-align-center\" data-align=\"center\">54399<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">236<\/td><td>HostWrite\u30bb\u30af\u30bf\u6570 ( 65536\u30bb\u30af\u30bf\u6bce\u306b1\u56de\u30ab\u30a6\u30f3\u30c8)<\/td><td class=\"has-text-align-center\" data-align=\"center\">33830<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">238<\/td><td>GC\u304c\u767a\u751f\u3057\u305f\u56de\u6570<\/td><td class=\"has-text-align-center\" data-align=\"center\">3941<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">239<\/td><td>Refresh\u304c\u767a\u751f\u3057\u305f\u56de\u6570<\/td><td class=\"has-text-align-center\" data-align=\"center\">17<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">241<\/td><td>\u6d88\u53bb\u56de\u6570(Max.)<\/td><td class=\"has-text-align-center\" data-align=\"center\">26<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">246<\/td><td>FlashRead\u30bb\u30af\u30bf\u6570<br>( 65536\u30bb\u30af\u30bf\u6bce\u306b1\u56de\u30ab\u30a6\u30f3\u30c8)<\/td><td class=\"has-text-align-center\" data-align=\"center\">37247<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">247<\/td><td>FlashWrite\u30bb\u30af\u30bf\u6570<br>( 65536\u30bb\u30af\u30bf\u6bce\u306b1\u56de\u30ab\u30a6\u30f3\u30c8)<\/td><td class=\"has-text-align-center\" data-align=\"center\">44460<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">249<\/td><td>\u6d88\u53bb\u56de\u6570(Min.)<\/td><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">251<\/td><td>SWL\u304c\u767a\u751f\u3057\u305f\u56de\u6570<\/td><td class=\"has-text-align-center\" data-align=\"center\">0<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">255<\/td><td>\u6d88\u53bb\u56de\u6570(Ave.)<\/td><td class=\"has-text-align-center\" data-align=\"center\">7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading has-vivid-cyan-blue-color has-text-color\">WAF\u304c\u60aa\u5316\u3059\u308b\u8981\u56e0<\/h2>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u6982\u8981<\/strong><\/p>\n\n\n\n<p>\u6b21\u306bWAF\u304c\u60aa\u5316\u3059\u308b\u8981\u56e0\u3092\u6319\u3052\u3066\u3054\u8aac\u660e\u3044\u305f\u3057\u307e\u3059\u3002\u30db\u30b9\u30c8\u3067\u5bfe\u5fdc\u53ef\u80fd\u306a\u90e8\u5206\u3082\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3054\u5354\u529b\u3044\u305f\u3060\u304f\u3068\u30c7\u30d0\u30a4\u30b9\u306b\u512a\u3057\u3044\u4f7f\u3044\u65b9\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u8981\u56e01\uff1a\u30c7\u30d0\u30a4\u30b9\u5185\u90e8\u51e6\u7406<\/strong><\/p>\n\n\n\n<p>\u4ed6\u306e\u8a18\u4e8b\u3067\u3082\u304a\u4f1d\u3048\u3057\u3066\u3044\u308b\u901a\u308a\u3001NAND\u306f\u4e0a\u66f8\u304d\u3092\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u7279\u6027\u3092\u3082\u3063\u3066\u3044\u307e\u3059\u3002<br>\u305d\u306e\u70ba\u30c7\u30d0\u30a4\u30b9\u304c\u5185\u90e8\u51e6\u7406\u3092\u884c\u3046\u5834\u5408\u3001\u51e6\u7406\u5bfe\u8c61\u306e\u30c7\u30fc\u30bf\u3092\u65b0\u3057\u3044\u30da\u30fc\u30b8\uff08\u3082\u3057\u304f\u306f\u30d6\u30ed\u30c3\u30af\uff09\u306b\u66f8\u304d\u8fbc\u307f\u3001\u53e4\u3044\u30c7\u30fc\u30bf\u3092\u7121\u52b9\u5316\u3057\u307e\u3059\u3002NAND\u306b\u5bfe\u3057\u3066\u8ffd\u52a0\u306e\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3046\u306e\u3067WAF\u304c\u4e0a\u6607\u3059\u308b\u8981\u56e0\u306b\u306a\u308a\u307e\u3059\u3002<br>\u5185\u90e8\u51e6\u7406\u3068\u306f\u3001\u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3001\u30a6\u30a7\u30a2\u30ec\u30d9\u30ea\u30f3\u30b0\u3001\u30ea\u30d5\u30ec\u30c3\u30b7\u30e5\u306a\u3069\u3092\u6307\u3057\u307e\u3059\u3002<br>\u307e\u305fSMART\u60c5\u5831\u306a\u3069\u88fd\u54c1\u7ba1\u7406\u60c5\u5831\u306f\u3001\u30c7\u30d0\u30a4\u30b9\u304c\u306a\u306b\u304b\u3057\u3089\u306e\u60c5\u5831\u3092\u66f4\u65b0\u3057\u305f\u5834\u5408\u3001NAND\u306b\u8a18\u9332\u3057\u307e\u3059\u3002<br>\u3053\u3061\u3089\u306e\u9805\u76ee\u306b\u3064\u3044\u3066\u306f\u30c7\u30d0\u30a4\u30b9\u5185\u90e8\u306e\u51e6\u7406\u306e\u305f\u3081\u3001\u6b8b\u5ff5\u306a\u304c\u3089\u30e6\u30fc\u30b6\u30fc\u69d8\u5074\u3067\u5236\u5fa1\u3092\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u8981\u56e02\uff1a\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u306e\u66f8\u304d\u8fbc\u307f<\/strong><\/p>\n\n\n\n<p>\u30db\u30b9\u30c8\u304c\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u5834\u5408\u3001\u30c7\u30d0\u30a4\u30b9\u5074\u306b\u76f4\u63a5\u30c7\u30fc\u30bf\u3092\u66f8\u304f\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<br>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084OS\u306a\u3069\u3092\u7d4c\u7531\u3057\u3066\u66f8\u304d\u8fbc\u307f\u30c7\u30fc\u30bf\u304c\u30c7\u30d0\u30a4\u30b9\u5074\u306b\u9001\u3089\u308c\u3001\u9001\u3089\u308c\u305f\u30c7\u30fc\u30bf\u3092\u30c7\u30d0\u30a4\u30b9\u304cNAND\u3078\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002<br>\u305d\u306e\u969b\u3001\u5192\u982d\u3067\u89e6\u308c\u305f\u300c\u30e6\u30fc\u30b6\u30fc\u69d8\u304c\u66f8\u304d\u8fbc\u307f\u305f\u3044\u30c7\u30fc\u30bf\u91cf\u3068\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u30c7\u30d0\u30a4\u30b9\uff08\u30c7\u30d0\u30a4\u30b9\uff09\u306b\u5b9f\u969b\u306b\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3063\u305f\u30c7\u30fc\u30bf\u91cf\u306b\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u3058\u308b\u300d\u3068\u3044\u3063\u305f\u73fe\u8c61\u304c\u8d77\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading has-vivid-cyan-blue-color has-text-color\">\u30c7\u30fc\u30bf\u91cf\u306b\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u3058\u308b\u4f8b<\/h2>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u4f8b<\/strong><\/p>\n\n\n\n<p>\u4e0b\u8a18\u306e\u3088\u3046\u306a\u6761\u4ef6\u3092\u4eee\u5b9a\u3057\u307e\u3059\u3002<br>\u2460\u66f8\u304d\u8fbc\u307f\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u306f4KiB<br>\u24611\u30da\u30fc\u30b8\u6bce\u306b\u30c7\u30fc\u30bf\u3092\u7ba1\u7406\u3057\u3066\u3044\u308b<br>\u24621\u30da\u30fc\u30b8\u306e\u30b5\u30a4\u30ba\u306f16KiB<\/p>\n\n\n\n<p>\u30c7\u30d0\u30a4\u30b9\u306f1\u30da\u30fc\u30b8\u6bce\uff08\uff1d16KiB\uff09\u3067\u3057\u304b\u30c7\u30fc\u30bf\u3092\u7ba1\u7406\u3067\u304d\u306a\u3044\u306e\u3067\u3001\u30db\u30b9\u30c8\u304c4KiByte\u306e\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u3068\u3001\u5b9f\u969b\u306b\u306f\u30c7\u30d0\u30a4\u30b9\u306b\u306f16KiByte\u3068\u3057\u3066\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3044\u307e\u3059\u3002<br><br>\u3064\u307e\u308a\u3053\u306e\u5834\u5408\u306eWAF\u306f<br>WAF = 16KiB \/ 4KiB = <strong>4.0<\/strong><br>\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u304c4\u500d\u306b\u306a\u3063\u3066\u3044\u308b\u70ba\u3001\u52b9\u7387\u304c\u60aa\u3044\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3063\u3066\u3044\u308b\u3068\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<br><br>\u66f8\u304d\u8fbc\u307f\u52b9\u7387\u3092\u826f\u5316\u3055\u305b\u308b\u306b\u306f\u3001\u30c7\u30d0\u30a4\u30b9\u306b\u9069\u5207\u306a\u30b5\u30a4\u30ba\u306e\u30c7\u30fc\u30bf\u3067\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br>\u672c\u4f8b\u306e\u5834\u5408\u306f\u30db\u30b9\u30c8\u5074\u3067\u4e00\u5ea64KiB\uff0a4\u306e\u30c7\u30fc\u30bf\u306b\u307e\u3068\u3081\u3066\u30c7\u30d0\u30a4\u30b9\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u3067\u6539\u5584\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.hagisol.co.jp\/techblog\/wp-content\/uploads\/2022\/09\/image-1024x210.png\" alt=\"\" class=\"wp-image-1340\"\/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 id=\"outline__6\" class=\"wp-block-heading has-vivid-cyan-blue-color has-text-color\">TBW\u3068DWPD<\/h2>\n\n\n\n<p class=\"has-medium-font-size\"><strong>TBW(Total Byte Written)<\/strong><\/p>\n\n\n\n<p>\u305d\u306eSSD\u306b\u751f\u6daf\u66f8\u304d\u8fbc\u3080\u3053\u3068\u304c\u53ef\u80fd\u306a\u7dcf\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u3092\u8868\u3057\u307e\u3059\u3002<br>TBW=100TB\u306eSSD\u3067\u306fTotal\u3067100TB\u306e\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u3053\u3068\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u304c\u3001\u5b9f\u306f\u3053\u3053\u306b\u843d\u3068\u3057\u7a74\u304c\u3042\u308a\u307e\u3059\u3002\u30e1\u30fc\u30ab\u30fc\u304c\u63d0\u4f9b\u3059\u308bTBW\u306e\u5024\u306f\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u4e0b\u3067\u8a08\u6e2c\u3057\u305fWAF\u3092\u30d9\u30fc\u30b9\u306b\u8a08\u7b97\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br>\u524d\u8ff0\u306e\u3068\u304a\u308a\u4f7f\u7528\u65b9\u6cd5\u306b\u3088\u308aWAF\u306e\u5024\u306f\u7570\u306a\u308a\u307e\u3059\u306e\u3067\u3001TBW\u306e\u5024\u306e\u307f\u3092\u9d5c\u5451\u307f\u306b\u3059\u308b\u306e\u306f\u5371\u967a\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>TBW = \u30c7\u30d0\u30a4\u30b9\u5bb9\u91cf \u00d7 \u66f8\u304d\u63db\u3048\u4fdd\u8a3c\u6570 \u00f7 WAF<\/strong><\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>DWPD\uff08Drive Writes Per Day\uff09<\/strong><\/p>\n\n\n\n<p>\u4fdd\u8a3c\u671f\u9593\u5185\u306b\u304a\u3044\u3066\u30e6\u30fc\u30b6\u30fc\u304c1\u65e5\u30c9\u30e9\u30a4\u30d6\u306b\u66f8\u8fbc\u3080\u3053\u3068\u304c\u51fa\u6765\u308b\u56de\u6570\u3068\u306a\u308a\u307e\u3059\u3002<br>\u5bb9\u91cf240GB\u3001DWPD=2.0\u306e\u30c7\u30d0\u30a4\u30b9\u3067\u3042\u308c\u3070\u3001\u6bce\u65e5480GB\u306e\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u4f7f\u3044\u65b9\u3067\u3082\u88fd\u54c1\u4fdd\u8a3c\u671f\u9593\u5185\u3067\u306f\u5bff\u547d\u306b\u5230\u9054\u3057\u306a\u3044\u8a08\u7b97\u306b\u306a\u308a\u307e\u3059\u3002<br>\u3053\u306e\u5024\u3082\u3001TBW\u306e\u8aac\u660e\u3068\u540c\u69d8\u306b\u3001WAF\u306b\u3088\u3063\u3066\u5024\u304c\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p style=\"font-size:35px\"><strong>DWDP = TBW \u00f7(\u30c7\u30d0\u30a4\u30b9\u5bb9\u91cf \u00d7 \u88fd\u54c1\u4fdd\u8a3c\u65e5\u6570)<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 id=\"outline__7\" class=\"wp-block-heading has-vivid-cyan-blue-color has-text-color\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u7d50\u8ad6<\/strong><\/p>\n\n\n\n<p>\u300cSSD\u306e\u9078\u3073\u304b\u305f\u300d\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u3044\u3054\u8aac\u660e\u3092\u3057\u3066\u304a\u308a\u307e\u3059\u304c\u3001<br>\u540c\u3058\u30c7\u30d0\u30a4\u30b9\u3067\u3082\u3001\u4f7f\u3044\u65b9\uff08\uff1d\u30a2\u30af\u30bb\u30b9\u30d1\u30bf\u30fc\u30f3\uff09\u306b\u3088\u308a\u3001\u30c7\u30d0\u30a4\u30b9\u306b\u5bfe\u3059\u308b\u66f8\u304d\u8fbc\u307f\u52b9\u7387\u306f\u9055\u3044\u307e\u3059\u3002<br>\u305d\u306e\u70ba\u3001TBW\u3084DWDP\u306a\u3069\u306e\u5024\u306f\u3042\u304f\u307e\u3067\u3082\u76ee\u5b89\u3068\u3057\u3001\u5b9f\u904b\u7528\u306b\u6cbf\u3063\u305f\u8a08\u7b97\u3092\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>\u6b21\u56de<\/strong><\/p>\n\n\n\n<p>\u3042\u308c\u3053\u308c\u3068\u66f8\u3044\u3066\u307f\u307e\u3057\u305f\u304c\u3001\u6b21\u56de\u30b3\u30e9\u30e0\u3067\u306f\u3001\u540c\u4e00\u30c7\u30d0\u30a4\u30b9\u306b\u5bfe\u3057\u3066JEDEC\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u30fbSequential Write\u30fbRandom Write\u306e\u30a2\u30af\u30bb\u30b9\u30d1\u30bf\u30fc\u30f3\u306e\u30a2\u30af\u30bb\u30b9\u3092\u884c\u3044\u66f8\u304d\u8fbc\u307f\u52b9\u7387\u304c\u3069\u306e\u7a0b\u5ea6\u5909\u5316\u3059\u308b\u304b\u691c\u8a3c\u3092\u884c\u3044\u307e\u3059\u3002<br><br>\u6b21\u56de\u3082\u3054\u671f\u5f85\u304f\u3060\u3055\u3044\uff01\uff01\uff01\uff01\uff01<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p style=\"font-size:12px\">\u4ed6\u793e\u5546\u6a19\u306b\u3064\u3044\u3066<br>\u8a18\u4e8b\u4e2d\u306b\u306f\u767b\u9332\u5546\u6a19\u30de\u30fc\u30af\u3092\u660e\u8a18\u3057\u3066\u304a\u308a\u307e\u305b\u3093\u304c\u3001\u8a18\u4e8b\u306b\u63b2\u8f09\u3055\u308c\u3066\u3044\u308b\u4f1a\u793e\u540d\u304a\u3088\u3073\u88fd\u54c1\u540d\u7b49\u306f\u4e00\u822c\u306b\u5404\u793e\u306e\u5546\u6a19\u307e\u305f\u306f\u767b\u9332\u5546\u6a19\u3067\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p style=\"font-size:12px\">\u8a18\u4e8b\u5185\u5bb9\u306b\u3064\u3044\u3066<br>\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9\u306f\u3001\u767a\u8868\u5f53\u6642\u306e\u60c5\u5831\u3067\u3059\u3002\u4e88\u544a\u306a\u304f\u5909\u66f4\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3042\u3089\u304b\u3058\u3081\u3054\u4e86\u627f\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"outline__8\" class=\"wp-block-heading has-vivid-cyan-blue-color has-text-color\">\u304a\u554f\u3044\u5408\u308f\u305b<\/h2>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/www.hagisol.co.jp\/form\/contact.php\"><strong>\u304a\u554f\u3044\u5408\u308f\u305b<\/strong><\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u300c\u66f8\u304d\u8fbc\u307f\u305f\u3044\u30c7\u30fc\u30bf\u91cf\u300d\u3068\u300c\u5b9f\u969b\u306b\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3063\u305f\u30c7\u30fc\u30bf\u91cf\u300d\u306b\u306f\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u3058\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u66f8\u304d\u8fbc\u307f\u30c7\u30fc\u30bf\u91cf\u306e\u6bd4\u7387(\u66f8\u304d\u8fbc\u307f\u52b9\u7387)\u3092WAF\u3068\u3044\u3044\u307e\u3059\u3002\u305d\u308c\u3067\u306f\u306a\u305c\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u3058\u3066\u3057\u307e\u3046\u306e\u304b\uff1f \u306b\u3064\u3044\u3066\u3054\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":9,"featured_media":1353,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,1],"tags":[23,24,35,29],"class_list":["post-1338","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stability","category-durability","tag-nvme-ssd","tag-sata-ssd","tag-35","tag-29"],"_links":{"self":[{"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/posts\/1338","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1338"}],"version-history":[{"count":21,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/posts\/1338\/revisions"}],"predecessor-version":[{"id":2642,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/posts\/1338\/revisions\/2642"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/media\/1353"}],"wp:attachment":[{"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}