{"id":3549,"date":"2024-05-02T16:00:00","date_gmt":"2024-05-02T07:00:00","guid":{"rendered":"https:\/\/testhagisolcojp.gptw.net\/techblog\/?p=3549"},"modified":"2024-07-17T07:42:15","modified_gmt":"2024-07-16T22:42:15","slug":"power-loss-protection-plp","status":"publish","type":"post","link":"https:\/\/testhagisolcojp.gptw.net\/techblog\/?p=3549","title":{"rendered":"Power Loss Protection (PLP)"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large is-style-default\"><img decoding=\"async\" src=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/wp-content\/uploads\/2024\/02\/AdobeStock_537409681-1024x576.jpeg\" alt=\"\" class=\"wp-image-3550\"\/><\/figure>\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 href=\"https:\/\/testhagisolcojp.gptw.net\/products\/storage\" target=\"_blank\" rel=\"noreferrer noopener\">\u7523\u696d\u7528\u30b9\u30c8\u30ec\u30fc\u30b8\u88fd\u54c1(NVMe SSD, SATA SSD)<\/a><\/li>\n<\/ul>\n\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u304a\u3053\u3068\u308f\u308a<\/mark><\/h2>\n\n\n\n<p>\u3000\u3053\u306e\u8a18\u4e8b\u306f\u3001<a rel=\"noreferrer noopener\" href=\"https:\/\/qiita.com\/ken-yossy\/items\/cfab961ba57a9981950a\" target=\"_blank\">2021\u5e745\u6708\u306bQiita\u306b\u6295\u7a3f\u3057\u305f\u8a18\u4e8b<\/a>\u3092\u52a0\u7b46\u4fee\u6b63\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u307e\u305f\u3001\u3053\u306e\u8a18\u4e8b\u306e\u30aa\u30ea\u30b8\u30ca\u30eb\u306f\u65e5\u672c\u8a9e\u3067\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002\u8a18\u4e8b\u304c\u65e5\u672c\u8a9e\u4ee5\u5916\u306e\u8a00\u8a9e\u3067\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u308c\u306f\u6a5f\u68b0\u7ffb\u8a33\u306e\u7d50\u679c\u3067\u3059\u3002\u5f53\u793e\u306f\u6a5f\u68b0\u7ffb\u8a33\u306e\u7cbe\u5ea6\u306b\u8cac\u4efb\u3092\u8ca0\u3044\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u306f\u3058\u3081\u306b<\/mark><\/h2>\n\n\n\n<p>\u3000SSD\u306e\u88fd\u54c1\u4ed5\u69d8\u66f8\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u6a5f\u80fd\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5185\u5bb9\u304c\u3042\u307e\u308a\u3088\u304f\u77e5\u3089\u308c\u3066\u3044\u306a\u3044\u6a5f\u80fd<\/li>\n\n\n\n<li>\u540d\u524d\u304c\u4f3c\u3066\u3044\u3066\u3082\u5185\u5bb9\u304c\u7570\u306a\u308b\u6a5f\u80fd<\/li>\n\n\n\n<li>\u305d\u3082\u305d\u3082\u660e\u78ba\u306b\u898f\u5b9a\u3055\u308c\u3066\u304a\u3089\u305a\u30e1\u30fc\u30ab\u30fc\u306b\u3088\u308a\u5185\u5bb9\u304c\u7570\u306a\u308b\u6a5f\u80fd<\/li>\n<\/ol>\n\n\n\n<p>\u3000\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u6a5f\u80fd\u306e\u3072\u3068\u3064\u3067\u3042\u308b<strong>Power Loss Protection<\/strong>\u3092\u8aac\u660e\u3057\u307e\u3059\u3002\u3088\u304fPLP\uff08\u30d4\u30fc\u30a8\u30eb\u30d4\u30fc\uff09\u3068\u7565\u3055\u308c\u307e\u3059\u3002<a href=\"https:\/\/qiita.com\/ken-yossy\/items\/cfab961ba57a9981950a#%E3%81%BE%E3%81%A8%E3%82%81\"><\/a><\/p>\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u307e\u3068\u3081<\/mark><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Power Loss Protection\u306f\u3001\u4e0d\u610f\u306e\u96fb\u6e90\u65ad\u304b\u3089SSD\u3092\u5b88\u308b\u6a5f\u80fd\u3067\u3042\u308b<\/li>\n\n\n\n<li>Power Loss Protection\u306f\u3001\u300c\u4f55\u3092\u3069\u306e\u7a0b\u5ea6\u5b88\u308b\u304b\u300d\u3068\u3044\u3046\u4fdd\u8b77\u7bc4\u56f2\u304c\u6a19\u6e96\u5316\u3055\u308c\u3066\u304a\u3089\u305a\u30e1\u30fc\u30ab\u30fc\u3084\u88fd\u54c1\u306b\u3088\u308a\u7570\u306a\u308b<\/li>\n\n\n\n<li>\u5177\u4f53\u7684\u306a\u5b9f\u73fe\u65b9\u6cd5\u306b\u306f\u30ad\u30e3\u30d1\u30b7\u30bf\u306b\u84c4\u3048\u305f\u96fb\u529b\u3092\u7528\u3044\u308b\u65b9\u6cd5\u306a\u3069\u304c\u3042\u308b<\/li>\n<\/ul>\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u767a\u52d5\u3059\u308b\u72b6\u6cc1<\/mark><\/h2>\n\n\n\n<p>\u3000Power Loss Protection\uff08\u4ee5\u964d\u3001PLP\u3068\u8a18\u8f09\u3057\u307e\u3059\uff09\u306f\u3001\u3072\u3068\u3053\u3068\u3067\u8a00\u3048\u3070\u300cSSD\u3092\u5b88\u308b\u305f\u3081\u306e\u6a5f\u80fd\u300d\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3068\u3044\u3046\u306e\u3082\u3001PLP\u3068\u306f\u4e00\u822c\u7684\u306b\u3001\u6b63\u898f\u306e\u624b\u9806\u3092\u7d4c\u305a\u306bSSD\u306e\u96fb\u6e90\u304c\u5207\u3089\u308c\u305d\u3046\u306a\u6642\uff08\u96fb\u6e90\u96fb\u5727\u304c\u95be\u5024\u4ee5\u4e0b\u306b\u4f4e\u4e0b\u3057\u305f\u6642\u3001\u306a\u3069\u3092\u542b\u3080\uff09\u306b\u767a\u52d5\u3057\u3001\u96fb\u6e90\u96fb\u5727\u306e\u4f4e\u4e0b\u3084\u4e0d\u5b89\u5b9a\u5316\u306b\u3088\u308a\u751f\u3058\u308b\u69d8\u3005\u306a\u73fe\u8c61\u304b\u3089SSD\u3092\u4fdd\u8b77\u3059\u308b\u6a5f\u80fd\u3060\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u300c\u6b63\u898f\u306e\u624b\u9806\u3092\u7d4c\u305a\u306bSSD\u306e\u96fb\u6e90\u304c\u5207\u3089\u308c\u305d\u3046\u306b\u306a\u308b\u3053\u3068\u300d\u306f\u3088\u304f&#8220;unexpected power loss (down)&#8221;\u3068\u304b&#8220;unexpected shutdown&#8221;\u306a\u3069\u3068\u547c\u3070\u308c\u307e\u3059\u3002&#8220;unexpected&#8221;\u3068\u3044\u3046\u5358\u8a9e\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u901a\u308a\u3001\u300c\u4e88\u671f\u3057\u306a\u3044\u300d\u3068\u3044\u3046\u610f\u5473\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000SCSI\uff08SAS\u3092\u542b\u3080\uff09\u3084SATA\u305d\u3057\u3066NVMe\u306a\u3069\u898f\u683c\u5316\u3055\u308c\u305f\u6a19\u6e96\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u306f\u3001\u660e\u793a\u7684\u3082\u3057\u304f\u306f\u6697\u9ed9\u7684\u306b\u3001SSD\u306e\u96fb\u6e90\u3092\u5207\u308b\uff08\u4ee5\u964d\u300c\u96fb\u6e90\u65ad\u300d\u3068\u8868\u8a18\u3057\u307e\u3059\uff09\u6642\u306e\u624b\u9806\u3092\u5b9a\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u624b\u9806\u3092\u5b88\u308aSSD\u306b\u4e8b\u524d\u306b\u96fb\u6e90\u65ad\u3092\u901a\u77e5\u3059\u308b\u3068\u3001SSD\u306f\u96fb\u6e90\u65ad\u306b\u5099\u3048\u308b\u51e6\u7406\u3092\u884c\u3044\u3001\u305d\u306e\u51e6\u7406\u304c\u5b8c\u4e86\u3057\u305f\u3053\u3068\u3092\u30db\u30b9\u30c8\u306b\u4f1d\u3048\u307e\u3059\u3002\u30db\u30b9\u30c8\u306fSSD\u304b\u3089\u300c\u96fb\u6e90\u65ad\u6e96\u5099\u5b8c\u4e86\u300d\u306e\u901a\u77e5\u3092\u53d7\u9818\u3057\u3066\u304b\u3089\u96fb\u6e90\u3092\u843d\u3068\u3057\u307e\u3059\uff08\u56f31\uff09\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img decoding=\"async\" src=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/wp-content\/uploads\/2024\/03\/PLP-flow-for-tech-blog-1024x354.png\" alt=\"\" class=\"wp-image-3574\"\/><figcaption class=\"wp-element-caption\"><em>\u56f31\uff1a\u9069\u5207\u306aSSD\u306e\u96fb\u6e90\u65ad\u624b\u9806<\/em><\/figcaption><\/figure>\n\n\n\n<p>\u3000\u4f8b\u3048\u3070\u3001SATA SSD\u304c\u6e96\u62e0\u3059\u308bATA\u30b3\u30de\u30f3\u30c9\u30bb\u30c3\u30c8\u4ed5\u69d8<sup>[1]<\/sup>\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u8f09\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Processing a STANDBY IMMEDIATE command shall cause the device to prepare for a power cycle (e.g., flush volatile write cache) prior to returning command completion.<\/p>\n<cite><em>&#8220;7.46 STANDBY IMMEDIATE \u2013 E0h, Non-Data&#8221;\u3088\u308a\u629c\u7c8b<\/em><\/cite><\/blockquote>\n\n\n\n<p>\u3000\u3064\u307e\u308a\u3001\u30db\u30b9\u30c8\u304cSATA SSD\u306e\u96fb\u6e90\u3092\u843d\u3068\u3059\u969b\u306f\u3001SSD\u306b<code>STANDBY IMMEDIATE<\/code>\u30b3\u30de\u30f3\u30c9\u3092\u767a\u884c\u3057\u3066\u305d\u306e\u30b3\u30de\u30f3\u30c9\u306e\u5b8c\u4e86\u901a\u77e5\u3092\u53d7\u9818\u3057\u3066\u304b\u3089\u96fb\u6e90\u3092\u843d\u3068\u3059\u306e\u304c\u6b63\u898f\u306e\uff08\u63a8\u5968\u3055\u308c\u308b\uff09\u624b\u9806\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u624b\u9806\u304c\u5b88\u3089\u308c\u306a\u3044\u3068\u3001SSD\u306f\u96fb\u6e90\u65ad\u6e96\u5099\u3092\u6e80\u8db3\u306b\u884c\u3048\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u3053\u3067\u8a00\u3046\u300c\u96fb\u6e90\u65ad\u6e96\u5099\u300d\u306f\u300c\u7247\u4ed8\u3051\u300d\u306e\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u56f32\u306f\u3001\u6b63\u898f\u306e\u96fb\u6e90\u65ad\u624b\u9806\u3092\u8e0f\u3093\u3060\u5834\u5408\u3068\u8e0f\u307e\u306a\u3044\u5834\u5408\u306e\u3001SSD\u306e\u96fb\u6e90\u304c\u65ad\u305f\u308c\u308b\u307e\u3067\u306eSSD\u306e\u5185\u90e8\u72b6\u614b\u3092\u793a\u3057\u305f\u30a4\u30e1\u30fc\u30b8\u56f3\u3067\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img decoding=\"async\" src=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/wp-content\/uploads\/2024\/03\/plp1-1024x534.png\" alt=\"\" class=\"wp-image-3577\"\/><figcaption class=\"wp-element-caption\"><em>\u56f32\uff1aSSD\u96fb\u6e90\u65ad\u624b\u9806\u306e\u6709\u7121\u306b\u3088\u308b\u5dee<\/em><\/figcaption><\/figure>\n\n\n\n<p>\u3000\u56f32\u306eSSD A\u306f\u3001\u6642\u523bt<sub>0<\/sub>\u306b\u3066\u30db\u30b9\u30c8\u304b\u3089\u96fb\u6e90\u65ad\u304c\u901a\u77e5\u3055\u308c\u3066\u7247\u4ed8\u3051\u51e6\u7406\u3092\u958b\u59cb\u3057\u3001\u6642\u523bt<sub>1<\/sub>\u306b\u7247\u4ed8\u3051\u51e6\u7406\u304c\u5b8c\u4e86\u3001SSD\u306e\u52d5\u4f5c\u53ef\u80fd\u6700\u4f4e\u96fb\u5727(Vt<sub>L<\/sub>)\u3092\u4e0b\u56de\u308b\uff08\uff1d\u96fb\u6e90\u304c\u843d\u3061\u308b\uff09\u6642\u523b(t<sub>3<\/sub>)\u3067\u306f\u5185\u90e8\u72b6\u614b\u304c\u7247\u4ed8\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4e00\u65b9\u56f32\u306eSSD B\u306f\u3001\u96fb\u6e90\u96fb\u5727\u306e\u4f4e\u4e0b\u3092\u691c\u51fa\u3059\u308b\u95be\u5024(Vt<sub>H<\/sub>)\u307e\u3067\u843d\u3061\u305f\u6642\u523b(t<sub>2<\/sub>)\u304b\u3089\u614c\u3066\u3066\u7247\u4ed8\u3051\u51e6\u7406\u3092\u59cb\u3081\u308b\u3082\u306e\u306e\u3001SSD\u306e\u52d5\u4f5c\u53ef\u80fd\u6700\u4f4e\u96fb\u5727(Vt<sub>L<\/sub>)\u3092\u4e0b\u56de\u308b\u6642\u523b(t<sub>3<\/sub>)\u307e\u3067\u306b\u7247\u4ed8\u3051\u304c\u7d42\u308f\u3089\u305a\u3001\u5185\u90e8\u72b6\u614b\u304c\u7247\u4ed8\u304b\u306a\u3044\u307e\u307e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000PLP\u306f\u3001\u56f32\u306eSSD B\u306e\u3088\u3046\u306b\u3001\u6b63\u898f\u306e\u96fb\u6e90\u65ad\u624b\u9806\u304c\u8e0f\u307e\u308c\u305a\u3044\u304d\u306a\u308a\u96fb\u6e90\u96fb\u5727\u306e\u964d\u4e0b\u3092\u691c\u51fa\u3057\u305f\u5834\u5408\u3067\u3082\u3001\u7247\u4ed8\u3051\u3064\u307e\u308a\u300c\u96fb\u6e90\u65ad\u6e96\u5099\u300d\u3092\u53ef\u80fd\u306a\u9650\u308a\u884c\u3046\u305f\u3081\u306e\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u96fb\u6e90\u65ad\u6e96\u5099\u304c\u9069\u5207\u306b\u884c\u308f\u308c\u306a\u3044\u3068\u3001\u30c7\u30fc\u30bf\u30a4\u30f3\u30c6\u30b0\u30ea\u30c6\u30a3\u3060\u3051\u3067\u306a\u304f\u30b9\u30c8\u30ec\u30fc\u30b8\u3068\u3057\u3066\u306e\u6a5f\u80fd\u7d99\u7d9a\u306b\u91cd\u5927\u306a\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u56f32\u306e\u8aac\u660e\u3067\u4f8b\u3048\u305f\u901a\u308a\u3001\u96fb\u6e90\u65ad\u6e96\u5099\u306f\u300c\u7247\u4ed8\u3051\u300d\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000SSD\u306f\u52d5\u4f5c\u4e2d\u3001\u30db\u30b9\u30c8\u304b\u3089\u53d7\u4fe1\u3057\u305f\u30c7\u30fc\u30bf\u3084SSD\u81ea\u8eab\u306e\u7ba1\u7406\u60c5\u5831\u306a\u3069\u69d8\u3005\u306a\u30c7\u30fc\u30bf\u30fb\u60c5\u5831\u3092\u6271\u3046\u3053\u3068\u3067\u6a5f\u80fd\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u3089\u306e\u60c5\u5831\u3092\u7247\u4ed8\u3051\u306a\u3044\u307e\u307e\u96fb\u6e90\u3092\u5207\u3089\u308c\u3066\u3057\u307e\u3046\u3068\u3001\u96fb\u6e90\u304c\u5207\u3089\u308c\u308b\u76f4\u524d\u307e\u3067\u6271\u3063\u3066\u3044\u305f\u30c7\u30fc\u30bf\u3084\u60c5\u5831\u3092\u898b\u5931\u3046\u3001\u3069\u3053\u306b\u8a18\u9332\u3057\u305f\u304b\u308f\u304b\u3089\u306a\u304f\u306a\u308b\u3001\u8a18\u9332\u304c\u96d1\u306b\u306a\u308b\u3001\u306a\u3069\u306e\u5f0a\u5bb3\u306e\u767a\u751f\u78ba\u7387\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\uff08\u56f33\uff09\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img decoding=\"async\" src=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/wp-content\/uploads\/2024\/03\/kataduke-analogy-4.png\" alt=\"\" class=\"wp-image-3581\"\/><figcaption class=\"wp-element-caption\"><em>\u56f33\uff1a\u7247\u4ed8\u3051\u3068\u96fb\u6e90\u65ad\u6e96\u5099\u306e\u5bfe\u6bd4<\/em><\/figcaption><\/figure>\n\n\n\n<h2 id=\"outline__6\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u4f7f\u308f\u308c\u308b\u30b7\u30b9\u30c6\u30e0<\/mark><\/h2>\n\n\n\n<p>\u3000\u524d\u7bc0\u3067\u8aac\u660e\u3057\u305f\u901a\u308a\u3001PLP\u304c\u767a\u52d5\u3059\u308b\u306e\u306f\u300cSSD\u306e\u96fb\u6e90\u304cSSD\u306b\u901a\u77e5\u3055\u308c\u305a\u306b\u5207\u3089\u308c\u305d\u3046\u306a\u6642\u300d\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u305f\u3081\u3001SSD\u306bPLP\u304c\u4f7f\u308f\u308c\u308b\uff08\u5fc5\u8981\u3068\u3055\u308c\u308b\uff09\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u4f55\u3089\u304b\u306e\u7406\u7531\u3067SSD\u306e\u96fb\u6e90\u304cSSD\u306b\u901a\u77e5\u3055\u308c\u305a\u306b\u5207\u3089\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u3001\u305d\u3046\u3086\u3046\u4e8b\u614b\u304c\u767a\u751f\u3057\u3066\u3082\u30c7\u30fc\u30bf\u30a4\u30f3\u30c6\u30b0\u30ea\u30c6\u30a3\u306e\u4fdd\u969c\u3084\u30b9\u30c8\u30ec\u30fc\u30b8\u3068\u3057\u3066\u306e\u6a5f\u80fd\u7d99\u7d9a\u304c\u975e\u5e38\u306b\u91cd\u8981\u3001\u306a\u6a5f\u5668\u3084\u30b7\u30b9\u30c6\u30e0\u3068\u306a\u308a\u307e\u3059\u3002\u5177\u4f53\u7684\u3092\u6319\u3052\u308b\u3068\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u96fb\u6e90\u304c\u4e0d\u5b89\u5b9a\u306a\u6a5f\u5668\u3084\u30b7\u30b9\u30c6\u30e0\uff08\u4f8b\uff1a\u96fb\u6c60\u3067\u52d5\u4f5c\u3059\u308b\u6a5f\u5668\u3084\u30b7\u30b9\u30c6\u30e0\uff09<\/li>\n\n\n\n<li>\u6a5f\u5668\u4e38\u3054\u3068\u96fb\u6e90\u3092\u843d\u3068\u3059\u5229\u7528\u65b9\u6cd5\u304c\u63a1\u3089\u308c\u308b\u30b7\u30b9\u30c6\u30e0\uff08\u4f8b\uff1a\u30d6\u30ec\u30fc\u30ab\u30fc\u306a\u3069\u3067\u591a\u6570\u306e\u6a5f\u5668\u3092\u4e00\u6589\u306b\u96fb\u6e90\u6295\u5165\u30fb\u906e\u65ad\u3059\u308b\u4f7f\u3044\u304b\u305f\uff09<\/li>\n\n\n\n<li>\u6d3b\u7dda\u633f\u629c\u304c\u884c\u308f\u308c\u308b\u6a5f\u5668\u30fb\u30b7\u30b9\u30c6\u30e0\n<ul class=\"wp-block-list\">\n<li>\u6d3b\u7dda\u633f\u629c\u306f\u3001Hot-Plug\u3001Hot-Swap\u3001Hot-Add \/ Hot-Remove\u3001Surprise Removal \/ Surprise Insertion\u306a\u3069\u3068\u3082\u547c\u3070\u308c\u307e\u3059<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u30b7\u30b9\u30c6\u30e0\u306e\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<\/ul>\n\n\n\n<h2 id=\"outline__7\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u4fdd\u8b77\u306e\u7bc4\u56f2<\/mark><\/h2>\n\n\n\n<p>\u3000\u5b9f\u306f\u3001<strong>Power Loss Protection (PLP)\u3068\u3044\u3046\u540d\u306e\u300c\u6a19\u6e96\u5316\u3055\u308c\u305f\u6a5f\u80fd\u300d\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002<\/strong>\u3064\u307e\u308a\u30ab\u30bf\u30ed\u30b0\u30b9\u30da\u30c3\u30af\u306b\u300cPower Loss Protection\uff08\u642d\u8f09\uff09\u300d\u3068\u8a18\u8f09\u3055\u308c\u3066\u3044\u305f\u5834\u5408\u3001\u305d\u306e\u5177\u4f53\u7684\u306a\u6a5f\u80fd\uff08\u4fdd\u8b77\u306e\u7bc4\u56f2\uff09\u3084\u4fdd\u8b77\u5185\u5bb9\u305d\u3057\u3066\u5b9f\u73fe\u65b9\u6cd5\u306f\u30e1\u30fc\u30ab\u30fc\u4f9d\u5b58\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u305f\u3081\u3001SSD\u306e\u88fd\u54c1\u4ed5\u69d8\u66f8\u306b\u8a18\u8f09\u3055\u308c\u305fPLP\u306b\u3064\u3044\u3066\u306f\u3001\u6a5f\u80fd\u306e\u5185\u5bb9\u306a\u3069\u3092\u9069\u5b9c\u30e1\u30fc\u30ab\u30fc\u306b\u554f\u3044\u5408\u308f\u305b\u308b\u306a\u3069\u306e\u5bfe\u5fdc\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3057\u304b\u3057\u6307\u6a19\u304c\u306a\u3044\u72b6\u614b\u3067\u306f\u8aac\u660e\u3082\u96e3\u3057\u3044\u306e\u3067\u3001PLP\u306e\u4fdd\u8b77\u7bc4\u56f2\u306b\u3064\u3044\u3066\u4fbf\u5b9c\u4e0a\u30ec\u30d9\u30eb\u5206\u3051\u3057\u305f\u3082\u306e\u304c\u88682\u3067\u3059\u3002\u3053\u308c\u306f\u3042\u304f\u307e\u3067\u79c1\u304c\u4f5c\u6210\u3057\u305f\u8aac\u660e\u7528\u306e\u3082\u306e\u3067\u3042\u308a\u3001\u3053\u306e\u3088\u3046\u306a\u30ec\u30d9\u30eb\u5206\u3051\u304c\u3055\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3053\u3068\u306b\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img decoding=\"async\" src=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/wp-content\/uploads\/2024\/03\/protection-level.png\" alt=\"\" class=\"wp-image-3583\"\/><figcaption class=\"wp-element-caption\">\u56f34\uff1aPLP\u306b\u3088\u308b\u4fdd\u8b77\u306e\u30ec\u30d9\u30eb\u3068\u5185\u5bb9<\/figcaption><\/figure>\n\n\n\n<p>\u3000\u56f34\u306e\u30ec\u30d9\u30eb1\u306f\u3001\u3068\u306b\u304b\u304fSSD\u304c\u8a8d\u8b58\u4e0d\u826f\u3084\u30a2\u30af\u30bb\u30b9\u4e0d\u80fd\u306b\u306a\u308b\u3053\u3068\u3092\u9632\u3050\u3082\u306e\u3067\u3059\u3002SSD\u304c\u8a8d\u8b58\u3067\u304d\u306a\u304f\u306a\u308b\u3068\u624b\u306e\u65bd\u3057\u3088\u3046\u304c\u306a\u304f\u306a\u308b\u305f\u3081\u3001\u305d\u306e\u3088\u3046\u306a\u4e8b\u614b\u306b\u9665\u308b\u3053\u3068\u3092\u9632\u3050\u305f\u3081\u306e\u6a5f\u80fd\u3067\u3059\u3002\u305d\u306e\u53cd\u9762\u3001\u30c7\u30fc\u30bf\u30a4\u30f3\u30c6\u30b0\u30ea\u30c6\u30a3\u306f\u4fdd\u969c\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3000\u30ec\u30d9\u30eb2\u306f\u3001SSD\u304c\u96fb\u6e90\u65ad\u3092\u8a8d\u8b58\u3057\u305f\u6642\u70b9\u3067\u30e1\u30c7\u30a3\u30a2\uff08NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\uff09\u306b\u8a18\u9332\u3055\u308c\u3066\u3044\u305f\u30c7\u30fc\u30bf\uff08&#8220;data at-rest&#8221;\u3068\u547c\u3070\u308c\u307e\u3059\uff09\u3092\u4fdd\u8b77\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u51e6\u7406\u4e2d\u306eNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u96fb\u6e90\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u308b\u3068\u3001\u305d\u308c\u307e\u3067\u306b\u8a18\u9332\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u72b6\u614b\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u308b\u5371\u967a\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u3088\u3046\u306a\u4e8b\u614b\u3092\u9632\u3050\u305f\u3081\u306e\u6a5f\u80fd\u3067\u3059\u3002\u4e00\u65b9\u3001\u3061\u3087\u3046\u3069\u66f8\u304d\u8fbc\u307f\u4e2d\u3082\u3057\u304f\u306f\u307e\u3060\u63ee\u767a\u6027\u306e\u30d0\u30c3\u30d5\u30a1\u5185\u306b\u3042\u308a\u672a\u66f8\u304d\u8fbc\u307f\u306e\u30c7\u30fc\u30bf\uff08&#8220;data in-flight&#8221;\u3068\u547c\u3070\u308c\u307e\u3059\uff09\u3092\u5931\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30ec\u30d9\u30eb3\u306f\u3001\u30ec\u30d9\u30eb2\u3067\u306f\u4fdd\u8b77\u3055\u308c\u306a\u3044\u30c7\u30fc\u30bf\u3001\u3064\u307e\u308adata in-flight\u3082\u5b88\u308b\u6a5f\u80fd\u3067\u3059\u3002\u3053\u306e\u30ec\u30d9\u30eb3\u304c\u6700\u3082\u5f37\u529b\u306a\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30ec\u30d9\u30eb2\u3068\u30ec\u30d9\u30eb3\u306e\u9055\u3044\u3084\u305d\u308c\u3089\u306e\u30ec\u30d9\u30eb\u304c\u6c42\u3081\u3089\u308c\u308b\u30b7\u30b9\u30c6\u30e0\u306b\u3064\u3044\u3066\u306f\u3001Micron Technologies\u306e\u30db\u30ef\u30a4\u30c8\u30da\u30fc\u30d1\u30fc<sup>[2]<\/sup>\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u6587\u66f8\u3067\u306f\u3001\u7279\u306b\u4e0a\u8a18\u306e\u30ec\u30d9\u30eb2\u306b\u3064\u3044\u3066\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u7279\u306b\u591a\u5024\u8a18\u61b6\u65b9\u5f0f\uff08MLC\u3084TLC\u3001\u3082\u3061\u308d\u3093QLC\u3082\u542b\u3080\uff09\u306b\u8d77\u56e0\u3059\u308b\u8907\u96d1\u3055\u304c\u8a73\u3057\u304f\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__8\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8<\/mark><\/h2>\n\n\n\n<p>\u3000\u524d\u7bc0\u3067\u8aac\u660e\u3057\u305f\u3088\u3046\u306b\u4fdd\u8b77\u5185\u5bb9\u306e\u9055\u3044\u304c\u3042\u308b\u306e\u3067\u4e00\u6982\u306b\u5f53\u3066\u306f\u3081\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u304c\u3001PLP\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8\u306e\u6982\u8981\u3092\u793a\u3057\u305f\u3082\u306e\u304c\u56f35\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img decoding=\"async\" src=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/wp-content\/uploads\/2024\/03\/merit-demerit-2.png\" alt=\"\" class=\"wp-image-3585\"\/><figcaption class=\"wp-element-caption\"><em>\u56f35\uff1aPLP\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8<\/em><\/figcaption><\/figure>\n\n\n\n<p>\u3000in-flight\u306e\u30c7\u30fc\u30bf\u3068at-rest\u306e\u30c7\u30fc\u30bf\u306e\u305d\u308c\u305e\u308c\u304c\u4fdd\u8b77\u5bfe\u8c61\u304b\u3069\u3046\u304b\u3068\u3044\u3046\u4fdd\u8b77\u7bc4\u56f2\u306e\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4fdd\u8b77\u304c\u5168\u304f\u306a\u3044\u5834\u5408\u3068\u6bd4\u8f03\u3059\u308b\u3068\u3001PLP\u306e\u4e00\u756a\u306e\u30e1\u30ea\u30c3\u30c8\u306f\u30c7\u30fc\u30bf\u30a4\u30f3\u30c6\u30b0\u30ea\u30c6\u30a3\u4fdd\u969c\u306e\u5f37\u5316\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000PLP\u304c\u6b63\u3057\u304f\u8a2d\u8a08\u30fb\u5b9f\u88c5\u30fb\u52d5\u4f5c\u3057\u3066\u3044\u308b\u9650\u308a\u3001\u96fb\u6e90\u65ad\u306b\u8d77\u56e0\u3059\u308b\u30c7\u30fc\u30bf\u30a4\u30f3\u30c6\u30b0\u30ea\u30c6\u30a3\u55aa\u5931\u304b\u3089\u306f\u3001\u8a2d\u8a08\u3057\u305f\u7bc4\u56f2\u5185\u3067\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u307e\u305f\u3001\u3053\u308c\u306fPLP\u306e\u5b9f\u73fe\u65b9\u6cd5\u306b\u4f9d\u5b58\u3057\u307e\u3059\u304c\u3001PLP\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u526f\u6b21\u7684\u306b\u6027\u80fd\u5411\u4e0a\u304c\u5f97\u3089\u308c\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002\u3068\u3044\u3046\u306e\u306f\u3001\u96fb\u6e90\u65ad\u6e96\u5099\u3064\u307e\u308a\u300c\u7247\u4ed8\u3051\u300d\u306e\u9069\u5207\u306a\u5b9f\u884c\u304c\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u7247\u4ed8\u3051\u53ef\u80fd\u306a\u7bc4\u56f2\u5185\u3067\u6027\u80fd\u304c\u6700\u5927\u306b\u306a\u308b\u3088\u3046\u306a\u52d5\u4f5c\u304c\u53ef\u80fd\u306b\u306a\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3082\u3046\u3072\u3068\u3064\u306e\u30e1\u30ea\u30c3\u30c8\u3082\u9069\u5207\u306a\u300c\u7247\u4ed8\u3051\u300d\u5b9f\u884c\u306e\u4fdd\u969c\u306b\u3088\u308b\u52b9\u679c\u3067\u3001\u8d77\u52d5\u6642\u9593\u306e\u5b89\u5b9a\u5ea6\u304c\u5897\u3059\u3001\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u56f32\u306b\u30a4\u30e1\u30fc\u30b8\u3092\u793a\u3057\u305f\u901a\u308a\u3001\u7247\u4ed8\u3051\u306e\u5b9f\u65bd\u306b\u3088\u308a\u30c7\u30fc\u30bf\u3084SSD\u306e\u30b7\u30b9\u30c6\u30e0\u60c5\u5831\u304cSSD\u5185\u90e8\u3067\u53ef\u80fd\u306a\u9650\u308a\u6574\u7406\u3055\u308c\u305f\u72b6\u614b\u3068\u306a\u308a\u3001\u6b21\u306b\u96fb\u6e90\u304c\u6295\u5165\u3055\u308c\u305f\u6642\u306b\u5fc5\u8981\u306a\u60c5\u5831\u3092\u7d20\u65e9\u304f\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u3053\u3068\u306f\u3001SSD\u306e\u8d77\u52d5\u6642\u9593\u304c\u3088\u308a\u5b89\u5b9a\u3059\u308b\u3001\u3068\u3044\u3046\u52b9\u679c\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4e00\u65b9\u3067\u3001PLP\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u306f\u3001\u3044\u305a\u308c\u3082\u5b9f\u73fe\u65b9\u6cd5\u306b\u4f9d\u5b58\u3059\u308b\u306e\u3067\u4e00\u6982\u306b\u306f\u8a00\u3048\u307e\u305b\u3093\u304c\u3001\u6027\u80fd\u3084\u4fe1\u983c\u6027\u304c\u72a0\u7272\u3068\u306a\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30ad\u30e3\u30d1\u30b7\u30bf\u306a\u3069\u3092\u7528\u3044\u3066\u9069\u5207\u306a\u96fb\u6e90\u65ad\u6e96\u5099\u3092\u884c\u3046\u305f\u3081\u306b\u5fc5\u8981\u306a\u96fb\u529b\u3092\u78ba\u4fdd\u3059\u308b\u5b9f\u73fe\u65b9\u6cd5\u306e\u5834\u5408\u3001\u96fb\u529b\u3092\u84c4\u3048\u308b\u30ad\u30e3\u30d1\u30b7\u30bf\u3092\u306f\u3058\u3081\u5145\u653e\u96fb\u56de\u8def\u3084\u5145\u96fb\u91cf\u691c\u51fa\u56de\u8def\u306a\u3069\u304c\u8ffd\u52a0\u3067\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000SSD\u306e\u88c5\u7f6e\u4fe1\u983c\u6027\u3084\u5bff\u547d\u306f\u901a\u5e38NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u4fe1\u983c\u6027\u3084\u5bff\u547d\u304c\u652f\u914d\u7684\u3067\u3059\u304c\u3001\u30ad\u30e3\u30d1\u30b7\u30bf\u306a\u3069\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u305d\u308c\u3089\u306e\u90e8\u54c1\u304cSSD\u306e\u88c5\u7f6e\u4fe1\u983c\u6027\u306e\u652f\u914d\u7684\u8981\u7d20\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u307e\u305f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u5bff\u547d\u6d88\u8cbb\u901f\u5ea6\u304c\u5897\u3059\u3001\u6027\u80fd\u304c\u4f4e\u4e0b\u3059\u308b\u3001\u306a\u3069\u306e\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u96fb\u6e90\u65ad\u6e96\u5099\u3064\u307e\u308a\u300c\u7247\u4ed8\u3051\u300d\u305d\u306e\u3082\u306e\u306e\u51e6\u7406\u91cf\u3092\u6e1b\u3089\u3059\u3001\u3068\u3044\u3046\u5b9f\u73fe\u65b9\u6cd5\u3092\u63a1\u7528\u3057\u305f\u5834\u5408\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u300c\u7247\u4ed8\u3051\u300d\u305d\u306e\u3082\u306e\u306e\u51e6\u7406\u91cf\u3092\u6e1b\u3089\u3059\u3068\u3044\u3046\u306e\u306f\u3001\u300c\u672a\u7247\u4ed8\u3051\u300d\u306e\u30c7\u30fc\u30bf\u3084\u30b7\u30b9\u30c6\u30e0\u60c5\u5831\u306e\u91cf\u3092\u6e1b\u3089\u3059\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u300c\u672a\u7247\u4ed8\u3051\u300d\u306e\u7dcf\u30c7\u30fc\u30bf\u91cf\u3092\u6e1b\u3089\u3059\u305f\u3081\u306b\u3088\u308a\u983b\u7e41\u306bNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u307f\u3092\u884c\u3046\u305f\u3081\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u5bff\u547d\u6d88\u8cbb\u901f\u5ea6\u304c\u3088\u308a\u901f\u304f\u306a\u308a\u3001\u304b\u3064\u6027\u80fd\u4f4e\u4e0b\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__9\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Power Loss Protection\u5b9f\u73fe\u4f8b<\/mark><\/h2>\n\n\n\n<p>\u3000\u3053\u3053\u3067\u306fPLP\u3092\u5b9f\u73fe\u3059\u308b\u5177\u4f53\u4f8b\u30922\u3064\u8aac\u660e\u3057\u307e\u3059\u3002\u3072\u3068\u3064\u306f\u5099\u84c4\u3057\u3066\u304a\u3044\u305f\u96fb\u529b\u3092\u5229\u7528\u3059\u308b\u65b9\u6cd5\u3001\u3082\u3046\u3072\u3068\u3064\u306f\u96fb\u6e90\u65ad\u6e96\u5099\u3064\u307e\u308a\u300c\u7247\u4ed8\u3051\u300d\u306b\u304b\u304b\u308b\u6642\u9593\u3092\u6975\u529b\u6e1b\u3089\u3059\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u306a\u304a\u3001\u65e2\u306b\u8aac\u660e\u3057\u305f\u901a\u308aPLP\u3068\u3044\u3046\u6a19\u6e96\u5316\u3055\u308c\u305f\u6a5f\u80fd\u306f\u306a\u304f\u3001\u5b9f\u73fe\u65b9\u6cd5\u3082\u8907\u6570\u306e\u65b9\u6cd5\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u306a\u3069\u30e1\u30fc\u30ab\u30fc\u4f9d\u5b58\u3067\u304b\u3064\u69d8\u3005\u3067\u3059\u3002\u65b9\u6cd5\u81ea\u4f53\u3082\u3053\u3053\u306b\u8a18\u8f09\u3057\u305f\u3082\u306e\u4ee5\u5916\u3082\u3042\u308a\u5f97\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u307e\u305f\u3001\u3042\u308b\u610f\u5473\u5f53\u7136\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001PLP\u3068\u3044\u3046\u8a00\u8449\u304c\u4f7f\u308f\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u3088\u308a\u524d\u304b\u3089\u3001\u4e8b\u524d\u901a\u77e5\u306a\u3057\u306e\u96fb\u6e90\u65ad\u6642\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u30c9\u30e9\u30a4\u30d6\u4fdd\u8b77\u6a5f\u80fd\u306f\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u306e\u305f\u3081\u3001SSD\u306e\u88fd\u54c1\u4ed5\u69d8\u66f8\u306bPLP\u3068\u3044\u3046\u8a18\u8f09\u304c\u306a\u304f\u3066\u3082\u4f55\u3089\u304b\u306e\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"outline__9_1\" class=\"wp-block-heading\"><a href=\"https:\/\/qiita.com\/ken-yossy\/items\/cfab961ba57a9981950a#%E5%82%99%E8%93%84%E9%9B%BB%E5%8A%9B%E3%81%AE%E5%88%A9%E7%94%A8\"><\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u5099\u84c4\u96fb\u529b\u306e\u5229\u7528<\/mark><\/h3>\n\n\n\n<p>\u3000\u30e1\u30ea\u30c3\u30c8\u306e\u8aac\u660e\u6642\u306b\u5c11\u3057\u8aac\u660e\u3057\u307e\u3057\u305f\u304c\u3001PLP\u306e\u5b9f\u73fe\u65b9\u6cd5\u3068\u3057\u3066\u6700\u3082\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u306f\u30ad\u30e3\u30d1\u30b7\u30bf\u306a\u3069\u3092\u7528\u3044\u3066\u4e88\u5099\u306e\u96fb\u529b\u3092\u78ba\u4fdd\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4e88\u3081\u30ad\u30e3\u30d1\u30b7\u30bf\u306b\u5fc5\u8981\u306a\u96fb\u529b\u3092\u84c4\u3048\u3066\u304a\u304d\u3001\u96fb\u6e90\u96fb\u5727\u306e\u4f4e\u4e0b\u3092\u691c\u51fa\u3057\u305f\u3089\u305d\u306e\u5099\u84c4\u96fb\u529b\u3092\u4f9b\u7d66\u3057\u307e\u3059\u3002\u56f36\u306f\u3053\u306e\u52d5\u4f5c\u30a4\u30e1\u30fc\u30b8\u3092\u8868\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img decoding=\"async\" src=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/wp-content\/uploads\/2024\/03\/plp-invoke-1024x479.png\" alt=\"\" class=\"wp-image-3586\"\/><figcaption class=\"wp-element-caption\"><em>\u56f36\uff1a\u5099\u84c4\u96fb\u529b\u306e\u4f9b\u7d66\u306b\u3088\u308bPLP\u5b9f\u73fe\u4f8b<\/em><\/figcaption><\/figure>\n\n\n\n<p>\u3000SSD\u306e\u96fb\u6e90\u56de\u8def\u304c\u96fb\u6e90\u96fb\u5727\u306e\u4f4e\u4e0b\u3092\u691c\u77e5\u3059\u308b\u3068\uff08\u6642\u523bt<sub>0<\/sub>\uff09\u3001\u96fb\u6e90\u56de\u8def\u304c\u30ad\u30e3\u30d1\u30b7\u30bf\u304b\u3089\u96fb\u529b\u3092\u4f9b\u7d66\u3059\u308b\u3088\u3046\u306b\u5207\u308a\u66ff\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u3057\u3066\u96fb\u6e90\u56de\u8def\u306f\u30ad\u30e3\u30d1\u30b7\u30bf\u304b\u3089\u306e\u96fb\u529b\u4f9b\u7d66\u3092\u958b\u59cb\u3057\u305f\u3053\u3068\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306b\u901a\u77e5\u3057\u3001\u305d\u306e\u901a\u77e5\u3092\u53d7\u9818\u3057\u305f\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306f\u6025\u3044\u3067\u7247\u4ed8\u3051\u51e6\u7406\u3092\u884c\u3044\u3001SSD\u306e\u5185\u90e8\u72b6\u614b\u3092\u6574\u7406\u3059\u308b\u306a\u3069\u3057\u3066\u96fb\u6e90\u304c\u5207\u3089\u308c\u3066\u3082\u826f\u3044\u72b6\u614b\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u56f36\u3067\u306f\u4e88\u5099\u96fb\u6e90\u306e\u4f9b\u7d66\u6642\u9593\u306ft<sub>1<\/sub>&nbsp;&#8211; t<sub>0<\/sub>\u3068\u3057\u3066\u63cf\u3044\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u306e\u4f9b\u7d66\u6642\u9593\u306f\u3001\u3069\u3053\u307e\u3067\u30c7\u30fc\u30bf\u3092\u5b88\u308b\u304b\uff08data in-flight\u3082\u5b88\u308b\u304b\u3069\u3046\u304b\uff09\u3084\u3001SSD\u306e\u5185\u90e8\u72b6\u614b\u306e\u7247\u4ed8\u3051\u306b\u304b\u304b\u308b\u6700\u60aa\uff08\u6700\u9577\uff09\u6642\u9593\u306a\u3069\u304b\u3089\u614e\u91cd\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u5099\u84c4\u96fb\u529b\u3067\u52d5\u4f5c\u53ef\u80fd\u306a\u6642\u9593\u304c\u9577\u3051\u308c\u3070\u9577\u3044\u307b\u3069\u3088\u308a\u826f\u304f\u6574\u7406\u6574\u9813\u3067\u304d\u307e\u3059\u304c\u3001\u642d\u8f09\u30ad\u30e3\u30d1\u30b7\u30bf\u91cf\u304c\u591a\u304f\u306a\u308b\u306a\u3069\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u304c\u3042\u308a\u307e\u3059\u3002<a href=\"https:\/\/qiita.com\/ken-yossy\/items\/cfab961ba57a9981950a#%E9%9B%BB%E6%BA%90%E6%96%AD%E6%BA%96%E5%82%99%E5%87%A6%E7%90%86%E6%99%82%E9%96%93%E5%89%8A%E6%B8%9B\"><\/a><\/p>\n\n\n\n<h3 id=\"outline__9_2\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u96fb\u6e90\u65ad\u6e96\u5099\u6642\u9593\u524a\u6e1b<\/mark><\/h3>\n\n\n\n<p>\u3000\u3053\u306e\u65b9\u6cd5\u306f\u3001\u300c\u7247\u4ed8\u3051\u306b\u5341\u5206\u306a\u6642\u9593\u304c\u306a\u3044\u306a\u3089\u7247\u4ed8\u3051\u308b\u91cf\u3092\u6e1b\u3089\u3059\u300d\u3068\u3044\u3046\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4f8b\u3048\u3070\u3001\u3042\u308bSSD\u304c\u30db\u30b9\u30c8\u304b\u3089\u30e9\u30a4\u30c8\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30c7\u30fc\u30bf\u3092NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u3080\u524d\u306b\u4e00\u6642\u7684\u306bDRAM\u306b\u305f\u3081\u308b\u4ed5\u7d44\u307f\u3060\u3068\u3057\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u307e\u308c\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30c7\u30fc\u30bf\u306f\u7247\u4ed8\u3051\u304c\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u3053\u3067data in-flight\u3082\u4fdd\u8b77\u5bfe\u8c61\u3068\u3059\u308bPLP\u3092\u5b9f\u73fe\u3059\u308b\u5834\u5408\u3001\u7247\u4ed8\u3051\u308b\u91cf\u3092\u6e1b\u3089\u3059\u306b\u306fDRAM\u306b\u305f\u3081\u308b\u30e6\u30fc\u30b6\u30c7\u30fc\u30bf\u3092\u6e1b\u3089\u305b\u3070\u3088\u3044\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u30a4\u30e1\u30fc\u30b8\u3092\u8868\u3057\u305f\u3082\u306e\u304c\u56f37\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img decoding=\"async\" src=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/wp-content\/uploads\/2024\/03\/plp-data-size-reduction.png\" alt=\"\" class=\"wp-image-3587\"\/><figcaption class=\"wp-element-caption\">\u56f37\uff1aDRAM\u306b\u305f\u3081\u308b\u30c7\u30fc\u30bf\u91cf\u306e\u524a\u6e1b\u306b\u3088\u308a\u96fb\u6e90\u65ad\u6e96\u5099\u6642\u9593\u3092\u524a\u6e1b\u3059\u308b\u30a4\u30e1\u30fc\u30b8<\/figcaption><\/figure>\n\n\n\n<p>\u3000\u56f37 (A)\u306e\u3088\u3046\u306b\u7247\u4ed8\u3051\u306b\u304b\u304b\u308b\u6642\u9593\u304c\u76ee\u6a19\u6642\u9593\u3092\u8d85\u904e\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u3001\u56f37 (B)\u306e\u3088\u3046\u306b\u305f\u3081\u308b\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u3092\u6e1b\u3089\u3059\u3053\u3068\u3067\u7247\u4ed8\u3051\u306b\u304b\u304b\u308b\u6642\u9593\u3092\u524a\u6e1b\u3057\u3001\u96fb\u6e90\u65ad\u6e96\u5099\u51e6\u7406\u6642\u9593\u3092\u76ee\u6a19\u6642\u9593\u5185\u306b\u53ce\u3081\u308b\u3001\u3068\u3044\u3046\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u5b9f\u969b\u306eSSD\u3067\u306f\u3001\u7247\u4ed8\u3051\u304c\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u306b\u306f\u30e6\u30fc\u30b6\u30c7\u30fc\u30bf\u3060\u3051\u3067\u306a\u304f\u30b7\u30b9\u30c6\u30e0\u30c7\u30fc\u30bf\u3082\u542b\u307e\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30db\u30b9\u30c8\u304c\u6307\u5b9a\u3059\u308bLBA\u3068\u305d\u306eLBA\u306e\u6700\u65b0\u30c7\u30fc\u30bf\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u5834\u6240\u306e\u5bfe\u5fdc\u95a2\u4fc2\u3092\u7ba1\u7406\u3059\u308b\u30c7\u30fc\u30bf\u3084\u3001\u7d71\u8a08\u60c5\u5831\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000PLP\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8\u306e\u8aac\u660e\u3067\u89e6\u308c\u305f\u3088\u3046\u306b\u3001\u3053\u306e\u65b9\u6cd5\u306f\u5fc5\u8981\u306a\u8ffd\u52a0\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u91cf\u306a\u3069\u3092\u524a\u6e1b\u3067\u304d\u308b\u3053\u3068\u304c\u5229\u70b9\u3067\u3042\u308b\u4e00\u65b9\u3001\u6027\u80fd\u4f4e\u4e0b\u306e\u53ef\u80fd\u6027\u3068\u3044\u3046\u6b20\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u6027\u80fd\u4f4e\u4e0b\u304c\u751f\u3058\u308b\u7406\u7531\u3092\u793a\u3057\u305f\u30a4\u30e1\u30fc\u30b8\u56f3\u304c\u56f38\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img decoding=\"async\" src=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/wp-content\/uploads\/2024\/03\/write-bandwidth-and-buffer-size-2-1024x580.png\" alt=\"\" class=\"wp-image-3588\"\/><figcaption class=\"wp-element-caption\">\u56f38\uff1a\u5358\u306b\u305f\u3081\u308b\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u3092\u6e1b\u3089\u3059\u3068\u6027\u80fd\u304c\u843d\u3061\u308b\u30a4\u30e1\u30fc\u30b8<\/figcaption><\/figure>\n\n\n\n<p>\u3000\u56f38 (A)\u3068(B)\u306f\u3068\u3082\u306b\u3001\u30db\u30b9\u30c8\u3068\u5b9f\u52b93 GB\/s\uff08\u304a\u304a\u3088\u305dPCIe Gen3x4\u63a5\u7d9a\u76f8\u5f53\uff09\u3067\u63a5\u7d9a\u3055\u308c\u305fSSD\u3092\u30a4\u30e1\u30fc\u30b8\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u30db\u30b9\u30c8\u3068\u306e\u63a5\u7d9a\u30d0\u30f3\u30c9\u5e45\u306f\u3001SSD\u5185\u306e\u30d0\u30c3\u30d5\u30a1\u30e1\u30e2\u30ea\u306b\u30c7\u30fc\u30bf\u304c\u305f\u307e\u308b\u901f\u5ea6\uff08\u30b0\u30e9\u30d5\u306e\u50be\u304d\uff09\u306b\u8868\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u3057\u3066\u3001\u56f38 (A)\u306f\u30d0\u30c3\u30d5\u30a1\u30e1\u30e2\u30ea\u306b1 MB\u306e\u30c7\u30fc\u30bf\u3092\u305f\u3081\u3066\u304b\u3089\u3001\u56f38 (B)\u306f(A)\u306e\u534a\u5206\u306e512 KB\u305f\u3081\u3066\u304b\u3089\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u3080\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3059\u3002\u3053\u3053\u3067\u3001\u56f38 (A)\u3068(B)\u3068\u3082\u306b\u3001\u642d\u8f09\u3059\u308bNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u30c7\u30fc\u30bf\u66f8\u304d\u8fbc\u307f\u306b\u304b\u304b\u308b\u6642\u9593\u306f300\u03bcs\u3001\u642d\u8f09\u3059\u308b\u5168NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30c1\u30c3\u30d7\u3092\u4f7f\u3063\u3066\u4e00\u5ea6\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u6700\u5927\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u306f1 MB\u3001\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u56f38 (B)\u306f\u3001\u56f38 (A)\u306b\u6bd4\u3079\u3066\u30d0\u30c3\u30d5\u30a1\u30e1\u30e2\u30ea\u306b\u305f\u3081\u308b\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u304c\u534a\u5206\u3067\u3059\u304b\u3089\u3001\u3082\u3057\u901a\u77e5\u306a\u304f\u96fb\u6e90\u96fb\u5727\u306e\u4f4e\u4e0b\u3092\u691c\u51fa\u3057\u3066\u3082\u3001\u6025\u3044\u3067\u7247\u4ed8\u3051\u308b\u30c7\u30fc\u30bf\u306e\u6700\u5927\u30b5\u30a4\u30ba\u3082\u56f38 (A)\u306e\u534a\u5206\u3067\u6e08\u307f\u307e\u3059\u3002\u307e\u305f\u3001\u5148\u307b\u3069\u8aac\u660e\u3057\u305f\u901a\u308a\u3001SSD\u306e\u30c7\u30fc\u30bf\u30a4\u30f3\u30c6\u30b0\u30ea\u30c6\u30a3\u4fdd\u8b77\u306e\u305f\u3081\u306b\u306f\u30e6\u30fc\u30b6\u30c7\u30fc\u30bf\u3060\u3051\u3067\u306a\u304f\u30b7\u30b9\u30c6\u30e0\u30c7\u30fc\u30bf\u3082\u7247\u4ed8\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u4f8b\u3048\u3070\u305d\u306e\u30b7\u30b9\u30c6\u30e0\u30c7\u30fc\u30bf\u3092\u3001\u30c7\u30fc\u30bf\u66f8\u304d\u8fbc\u307f\u3092\u3057\u3066\u3044\u306a\u3044NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u306b\u3059\u308c\u3070\u3001\u96fb\u6e90\u65ad\u6e96\u5099\u51e6\u7406\u306e\u6642\u9593\u306e\u5897\u52a0\u3092\u6291\u5236\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3057\u304b\u3057\u3001\u56f38\u306b\u793a\u3057\u305f\u901a\u308a\u3001\u56f38 (B)\u306eSSD\u306e\u901a\u5e38\u52d5\u4f5c\u6642\u306e\u30e9\u30a4\u30c8\u6027\u80fd\u306f\u56f38 (A)\u3068\u6bd4\u8f03\u3057\u3066\u534a\u5206\u7a0b\u5ea6\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u30c7\u30fc\u30bf\u66f8\u304d\u8fbc\u307f\u306b\u304b\u304b\u308b\u6642\u9593\u3068\u3001\u30db\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308b\u30d0\u30f3\u30c9\u5e45\u304c\u30d0\u30e9\u30f3\u30b9\u3057\u3066\u3044\u306a\u3044\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30e9\u30a4\u30c8\u6027\u80fd\u3092\u9ad8\u3081\u308b\u306b\u306f\u306a\u308b\u3079\u304f\u591a\u304f\u306e\u30c7\u30fc\u30bf\u3092\u30d0\u30c3\u30d5\u30a1\u3057\u3066\u4e00\u5ea6\u306bNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u3080\u3079\u304d\u306a\u306e\u3067\u3059\u304c\u3001\u30d0\u30c3\u30d5\u30a1\u3059\u308b\u30c7\u30fc\u30bf\u3092\u591a\u304f\u3057\u3059\u304e\u308b\u3068\u96fb\u6e90\u65ad\u6e96\u5099\u51e6\u7406\u6642\u9593\u304c\u9577\u304f\u306a\u308b\u3001\u3068\u3044\u3046\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u306e\u95a2\u4fc2\u306b\u3042\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u3042\u305f\u308a\u306fSSD\u306e\u5185\u90e8\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u30fb\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u8a2d\u8a08\u306e\u4e00\u756a\u306e\u30ad\u30e2\u306b\u306a\u308b\u90e8\u5206\u3067\u3001\u5404\u30e1\u30fc\u30ab\u30fc\u304c\u3057\u306e\u304e\u3092\u524a\u308b\u90e8\u5206\u3067\u3059\u3002<a href=\"https:\/\/qiita.com\/ken-yossy\/items\/cfab961ba57a9981950a#%E3%81%9D%E3%81%AE%E4%BB%96%E3%81%AE%E6%96%B9%E6%B3%95\"><\/a><\/p>\n\n\n\n<h3 id=\"outline__9_3\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u305d\u306e\u4ed6\u306e\u65b9\u6cd5<\/mark><\/h3>\n\n\n\n<p>\u3000\u3053\u308c\u307e\u3067\u8aac\u660e\u3057\u305f2\u3064\u306e\u65b9\u6cd5\u306e\u4ed6\u306b\u306f\u3001\u4f8b\u3048\u3070\u3001\u30d0\u30c3\u30d5\u30a1\u30e1\u30e2\u30ea\u3084\u30ef\u30fc\u30ad\u30f3\u30b0\u30e1\u30e2\u30ea\u3068\u3057\u3066DRAM\u3067\u306f\u306a\u304fMRAM\u3092\u7528\u3044\u308b\u3082\u306e\u304c\u3042\u308a\u3001\u305d\u306e\u65b9\u6cd5\u3092\u63a1\u7528\u3057\u305fSSD\u304c\u65e2\u306b\u767a\u8868\u3055\u308c\u3066\u3044\u307e\u3059<sup>[3][4]<\/sup>\u3002<\/p>\n\n\n\n<p>\u3000MRAM\u306f\u3001DRAM\u306b\u8fd1\u3044\u30aa\u30fc\u30c0\u30fc\u306e\u30ec\u30a4\u30c6\u30f3\u30b7\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u3066\u304b\u3064\u4e0d\u63ee\u767a\u3001\u3068\u3044\u3046\u30e1\u30e2\u30ea\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u305f\u3081\u3001\u7406\u60f3\u7684\u306b\u306f\u3001\u63ee\u767a\u6027\u306eDRAM\u4e0a\u306b\u914d\u7f6e\u3057\u3066\u3044\u305f\u305f\u3081\u306b\u96fb\u6e90\u65ad\u6642\u306e\u7247\u4ed8\u3051\u3092\u3057\u3066\u3044\u305f\u30c7\u30fc\u30bf\uff08in-flight\u306a\u30e6\u30fc\u30b6\u30c7\u30fc\u30bf\u3001\u30b7\u30b9\u30c6\u30e0\u30c7\u30fc\u30bf\uff09\u3092\u4e0d\u63ee\u767a\u6027\u306eMRAM\u4e0a\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u3067\u96fb\u6e90\u65ad\u6642\u306e\u7247\u4ed8\u3051\u3092\u4e0d\u8981\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u4ed6\u306b\u3082\u3001\u69d8\u3005\u306a\u30c6\u30af\u30cb\u30c3\u30af\u304c\u3042\u308a\u3001\u5404\u30e1\u30fc\u30ab\u30fc\u5404\u88fd\u54c1\u306b\u3088\u308a\u5b9f\u73fe\u65b9\u6cd5\u306f\u69d8\u3005\u3067\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__10\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u304a\u308f\u308a\u306b<\/mark><\/h2>\n\n\n\n<p>\u3000\u4eca\u56de\u306f\u3001SSD\u306e\u88fd\u54c1\u4ed5\u69d8\u66f8\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308b\u6a5f\u80fd\u306e\u3072\u3068\u3064\u3001Power Loss Protection (PLP)\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3000PLP\u306f\u3001\u4e0d\u610f\u306e\u96fb\u6e90\u65ad\u306b\u898b\u821e\u308f\u308c\u3066\u3082\u30c9\u30e9\u30a4\u30d6\u306e\u6a5f\u80fd\u3084\u30c7\u30fc\u30bf\u30a4\u30f3\u30c6\u30b0\u30ea\u30c6\u30a3\u3092\u5b88\u308b\u305f\u3081\u306e\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4e00\u65b9\u3067\u52d5\u4f5c\u3084\u4fdd\u8a3c\u7bc4\u56f2\u304c\u6a19\u6e96\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3082\u3042\u308a\u3001\u30e1\u30fc\u30ab\u30fc\u3084\u88fd\u54c1\u306b\u3088\u308a\u6a5f\u80fd\u306e\u5185\u5bb9\u3084\u5b9f\u73fe\u65b9\u6cd5\u304c\u591a\u7a2e\u591a\u69d8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u305f\u3081\u3001SSD\u306e\u30b9\u30da\u30c3\u30af\u306b\u300cPower Loss Protection (PLP)\u30b5\u30dd\u30fc\u30c8\u300d\u306e\u3088\u3046\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u305f\u6642\u306f\u3001\u305d\u306e\u6a5f\u80fd\u304c\u4f55\u3092\u3069\u306e\u3088\u3046\u306b\u4fdd\u8b77\u3057\u3066\u3044\u308b\u306e\u304b\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000SSD\u306e\u30b9\u30da\u30c3\u30af\u3092\u8aad\u307f\u89e3\u304f\u969b\u306e\u3054\u53c2\u8003\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__11\" class=\"wp-block-heading\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">References<\/mark><\/h2>\n\n\n\n<p>[1] T13,&nbsp;<em>&#8220;Information technology &#8211; ATA Command Set &#8211; 4 (ACS-4)&#8221;<\/em>, Revision 14, October 2016<br>[2]&nbsp;Micron Technologies,&nbsp;&#8220;<em><a rel=\"noreferrer noopener\" href=\"https:\/\/www.micron.com\/content\/dam\/micron\/global\/public\/products\/white-paper\/ssd-power-loss-protection-white-paper-lo.pdf\" target=\"_blank\">How Micron SSDs Handle Unexpected Power Loss<\/a>&#8221;<\/em>&nbsp;[PDF], White Paper, February 2024\uff082024\/4\/8\u95b2\u89a7\uff09<br>[3] Brent Yardley,&nbsp;<em>&#8220;STT-MRAM applications use in IBM FCMs&#8221;<\/em>, Flash Memory Summit 2018, Santa Clara, CA, August 2018<br>[4] Phison Electronics\u3001<em>&#8220;<a rel=\"noreferrer noopener\" href=\"https:\/\/www.phison.com\/ja\/company\/newsroom\/press-releases\/109-gen4\/1135-everspin-and-phison-partner-to-bring-spin-torque-transfer-mram-to-next-generation-enterprise-ssd-controllers-jp\" target=\"_blank\">Everspin and Phison Partner to Bring Spin Torque Transfer MRAM to Next Generation Enterprise SSD Controllers&#8221;<\/a><\/em>\u30012019\/7\/25\uff082024\/4\/8\u95b2\u89a7\uff09<\/p>\n\n\n\n<h2 id=\"outline__12\" class=\"wp-block-heading\" id=\"outline__8\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u4ed6\u793e\u5546\u6a19\u306b\u3064\u3044\u3066<\/mark><\/h2>\n\n\n\n<p>\u3000\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<h2 id=\"outline__13\" class=\"wp-block-heading\" id=\"outline__9\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u8a18\u4e8b\u5185\u5bb9\u306b\u3064\u3044\u3066<\/mark><\/h2>\n\n\n\n<p>\u3000\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","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Power Loss Protection (PLP)\u3068\u3044\u3046\u6a5f\u80fd\u306b\u3064\u3044\u3066\u3001\u767a\u52d5\u72b6\u6cc1\u3084\u30c7\u30fc\u30bf\u4fdd\u969c\u7bc4\u56f2\u305d\u3057\u3066\u30e1\u30ea\u30c3\u30c8\u3068\u30c7\u30e1\u30ea\u30c3\u30c8\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":4,"featured_media":3550,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,1],"tags":[23,24,35],"class_list":["post-3549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-reliability","category-durability","tag-nvme-ssd","tag-sata-ssd","tag-35"],"_links":{"self":[{"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=\/wp\/v2\/posts\/3549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3549"}],"version-history":[{"count":42,"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=\/wp\/v2\/posts\/3549\/revisions"}],"predecessor-version":[{"id":4185,"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=\/wp\/v2\/posts\/3549\/revisions\/4185"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=\/wp\/v2\/media\/3550"}],"wp:attachment":[{"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/testhagisolcojp.gptw.net\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}