{"id":4849,"date":"2025-05-19T08:00:00","date_gmt":"2025-05-18T23:00:00","guid":{"rendered":"https:\/\/www.hagisol.co.jp\/techblog\/?p=4849"},"modified":"2025-05-16T17:02:02","modified_gmt":"2025-05-16T08:02:02","slug":"post-4849","status":"publish","type":"post","link":"https:\/\/www.hagisol.co.jp\/techblog\/?p=4849","title":{"rendered":"SSD\u306eSilent Data Corruption\u3068\u305d\u306e\u5bfe\u7b56(1\/2)"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.hagisol.co.jp\/techblog\/wp-content\/uploads\/2025\/02\/AdobeStock_1057739008-1024x574.jpeg\" alt=\"\" class=\"wp-image-4871\"\/><\/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\">\u304a\u3053\u3068\u308f\u308a<\/mark><\/h2>\n\n\n\n<p>\u3000\u3053\u306e\u8a18\u4e8b\u306f\u3001<a href=\"https:\/\/qiita.com\/ken-yossy\/items\/596bbc353320b8e0fc23\" target=\"_blank\" rel=\"noreferrer noopener\">2024\u5e747\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__2\" 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\u3088\u3046\u306a\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u9650\u3089\u305a\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306b\u306fSilent Data Corruption (SDC)\u3068\u547c\u3070\u308c\u308b\u30a8\u30e9\u30fc\u304c\u5b58\u5728\u3057\u307e\u3059\uff08Silent Data Error (SDE)\u3068\u547c\u3070\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\uff09\u3002<\/p>\n\n\n\n<p>\u3000\u540d\u79f0\u306b\u300c\u30b5\u30a4\u30ec\u30f3\u30c8(Silent)\u300d\u304c\u542b\u307e\u308c\u308b\u7406\u7531\u306f\u3001\u30e6\u30fc\u30b6\u3084\u30b7\u30b9\u30c6\u30e0\u304c\u6c17\u3065\u304b\u306a\u3044\u3046\u3061\u306b\u305d\u308c\u3089\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3001\u305d\u308c\u3089\u304c\u6642\u306b\u306f\u60aa\u5316\u3084\u4f1d\u64ad\u3092\u8d77\u3053\u3057\u3001\u30a8\u30e9\u30fc\u306b\u6c17\u3065\u3044\u305f\u6642\u306b\u306f\u624b\u9045\u308c\u3067\u4fee\u5fa9\u4e0d\u80fd\u306a\u72b6\u614b\u3001\u3068\u3044\u3046\u3053\u3068\u304c\u8d77\u3053\u308a\u5f97\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306eSDC\u306e\u3046\u3061\u3001\u4e2d\u6027\u5b50\u7dda\u306b\u3088\u308bSRAM\u306a\u3069\u306e\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306fSingle Event Upset (SEU)\u3068\u547c\u3070\u308c1990\u5e74\u53f0\u304b\u3089\u7814\u7a76\u3055\u308c\u3066\u3044\u307e\u3059<sup>[1][2]<\/sup>\u3002\u305d\u306e\u5f8c\u534a\u5c0e\u4f53\u306e\u5fae\u7d30\u5316\u306b\u3088\u308a\u5358\u30d3\u30c3\u30c8\u3067\u306f\u306a\u304f\u8907\u6570\u30d3\u30c3\u30c8\u307e\u3068\u3081\u3066\u30a8\u30e9\u30fc\u3092\u8d77\u3053\u3059\u3053\u3068\u3082\u660e\u3089\u304b\u306b\u3055\u308c\u307e\u3057\u305f<sup>[3][4]<\/sup>\u3002\u540c\u69d8\u306e\u73fe\u8c61\u304cNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\uff08\u5f53\u6642\u306f2D\uff09\u3067\u8d77\u3053\u308a\u5f97\u308b\u3053\u3068\u3082\u793a\u3055\u308c\u3066\u3044\u307e\u3059<sup>[5]<\/sup>\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u306e\u3088\u3046\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u8981\u56e0\u306e\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306b\u52a0\u3048\u3001\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u5b9f\u88c5\u65b9\u6cd5\u306b\u8d77\u56e0\u3057\u3066\u8d77\u3053\u308a\u5f97\u308b\u60c5\u5831\u306e\u55aa\u5931\u3082SDC\u306e\u3072\u3068\u3064\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u307e\u3059<sup>[6]<\/sup>\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u3053\u3067\u3001\u4eca\u56de\u304b\u30892\u56de\u306e\u8a18\u4e8b\u3067\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3092\u30e1\u30c7\u30a3\u30a2\u3068\u3059\u308bSSD\uff08\u4ee5\u964d\u5358\u306bSSD\u3068\u8a18\u8f09\uff09\u306b\u307e\u3064\u308f\u308bSDC\u7279\u306b\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u8d77\u56e0\u306e\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u3068\u305d\u306e\u5bfe\u7b56\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000SSD\u306e\u69cb\u6210\u8981\u7d20\u306f\u5927\u304d\u304fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3068\u305d\u308c\u4ee5\u5916\u306b\u5206\u985e\u3067\u304d\u307e\u3059\u306e\u3067\u3001\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8d77\u304d\u308b\u4e8b\u8c61\u3092\u8aac\u660e\u3057\u3001\u6b21\u56de\u306e\u8a18\u4e8b\u3067\u306fSSD\u3092\u69cb\u6210\u3059\u308bNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u4ee5\u5916\u306e\u8981\u7d20\u3067\u8d77\u304d\u308b\u4e8b\u8c61\u3092\u8aac\u660e\u3057\u307e\u3059\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\">\u307e\u3068\u3081<\/mark><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SSD\u306e\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u767a\u751f\u500b\u6240\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3068\u305d\u308c\u4ee5\u5916\u306b\u5206\u985e\u3067\u304d\u308b<\/li>\n\n\n\n<li>NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3067\u767a\u751f\u3059\u308b\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306e\u3046\u3061\u3001\u30c7\u30fc\u30bf\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3\u306f\u30d1\u30c8\u30ed\u30fc\u30eb\u3067\u3001\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u306fRead\u56de\u6570\u306e\u76e3\u8996\u3067\u5bfe\u5fdc\u3059\u308b<\/li>\n\n\n\n<li>\u305d\u306e\u4ed6\u306e\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u5411\u3051\u8aa4\u308a\u8a02\u6b63\u6a5f\u80fd\u3067\u307e\u3068\u3081\u3066\u5bfe\u51e6\u3059\u308b<\/li>\n<\/ul>\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\">NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u3069\u3053\u3067\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u304b<\/mark><\/h2>\n\n\n\n<p>\u3000NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306f\u3001\u30e1\u30e2\u30ea\u30bb\u30eb\u3068\u305d\u306e\u5468\u8fba\u56de\u8def\u304b\u3089\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3057\u304b\u3057\u3001\u5b9f\u969b\u306b\u306f\u30c1\u30c3\u30d7\u306e\u5927\u90e8\u5206\u3092\u30e1\u30e2\u30ea\u30bb\u30eb\u304c\u5360\u3081\u308b\u305f\u3081\u3001\u4e2d\u6027\u5b50\u7dda\u304c\u539f\u56e0\u306e\u3082\u306e\u3092\u542b\u3081\u3066\u3001\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u7b87\u6240\u306f\u78ba\u7387\u7684\u306b\u307b\u307c\u30e1\u30e2\u30ea\u30bb\u30eb\u3067\u3042\u308b\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30c1\u30c3\u30d7\u306e\u30d6\u30ed\u30c3\u30af\u56f3\u3068\u5b9f\u969b\u306e\u30c1\u30c3\u30d7\u5199\u771f\u30a4\u30e1\u30fc\u30b8\u3092\u6bd4\u8f03\u3059\u308b\u3068\u56f31\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.hagisol.co.jp\/techblog\/wp-content\/uploads\/2025\/02\/NAND-internal-block-diagram-en.png\" alt=\"\" class=\"wp-image-4866\"\/><figcaption class=\"wp-element-caption\"><em>\u56f31\uff1aNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30c1\u30c3\u30d7\u306e\u30d6\u30ed\u30c3\u30af\u56f3(A)\u3068\u5b9f\u969b\u306e\u30c1\u30c3\u30d7\u5199\u771f\u30a4\u30e1\u30fc\u30b8(B)<\/em><\/figcaption><\/figure>\n\n\n\n<p>\u3000\u30e1\u30e2\u30ea\u30bb\u30eb\u30a2\u30ec\u30a4\u306f\u30d6\u30ed\u30c3\u30af\u56f3\u4e0a\u3067\u306f\u3044\u3061\u6a5f\u80fd\u30d6\u30ed\u30c3\u30af\u3068\u3057\u3066\u63cf\u304b\u308c\u307e\u3059\u3002\u3057\u304b\u3057\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30e1\u30fc\u30ab\u30fc\u304c\u81ea\u793eWeb\u30b5\u30a4\u30c8\u3067\u516c\u958b\u3057\u3066\u3044\u308b\u30c1\u30c3\u30d7\u5199\u771f\u3084\u5404\u7a2e\u5b66\u4f1a\u3067\u767a\u8868\u3057\u305f\u30c1\u30c3\u30d7\u5199\u771f\u3092\u898b\u308b\u3068\u3001\u5b9f\u969b\u306b\u306f\u30e1\u30e2\u30ea\u30bb\u30eb\u30a2\u30ec\u30a4\u304c\u30c1\u30c3\u30d7\u306e\u307b\u3068\u3093\u3069\u3092\u5360\u3081\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u6700\u8fd1\u306e3D NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3067\u306f\u5468\u8fba\u56de\u8def\u3092\u30e1\u30e2\u30ea\u30bb\u30eb\u30a2\u30ec\u30a4\u306e\u4e0a\u3084\u4e0b\u306b\u914d\u7f6e\u3059\u308b\u69cb\u9020\u3092\u63a1\u7528\u3057\u305f\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3067\u3082\u30e1\u30e2\u30ea\u30bb\u30eb\u30a2\u30ec\u30a4\u306e\u5360\u3081\u308b\u4f53\u7a4d\u6bd4\u7387\u304c\u5727\u5012\u7684\u306b\u9ad8\u3044\u3053\u3068\u306f\u5909\u308f\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u3053\u3068\u304b\u3089\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30c1\u30c3\u30d7\u3067\u767a\u751f\u3059\u308b\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u3068\u3057\u3066\u307e\u305a\u8003\u616e\u3059\u3079\u304d\u3082\u306e\u306f\u30e1\u30e2\u30ea\u30bb\u30eb\u3067\u767a\u751f\u3059\u308b\u3082\u306e\u3001\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\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\">\u30c7\u30fc\u30bf\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3<\/mark><\/h2>\n\n\n\n<p>\u3000\u30c7\u30fc\u30bf\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3\u306b\u3088\u308b\u30a8\u30e9\u30fc\u306f\u3001\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3093\u3067\u304b\u3089\u306e\u6642\u9593\u7d4c\u904e\u306b\u4f34\u3044\u767a\u751f\uff08\u5897\u52a0\uff09\u3059\u308b\u30a8\u30e9\u30fc\u3067\u3059\u3002\u5468\u8fba\u6e29\u5ea6\u306a\u3069\u306e\u74b0\u5883\u306b\u3082\u5f71\u97ff\u3092\u53d7\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3\u306b\u3088\u308b\u30a8\u30e9\u30fc\u3092\u8d77\u3053\u3057\u305f\u30e1\u30e2\u30ea\u30bb\u30eb\u306f\u518d\u5ea6\u6d88\u53bb\u3092\u884c\u3046\u3053\u3068\u3067\u901a\u5e38\u901a\u308a\u30c7\u30fc\u30bf\u306e\u66f8\u304d\u8fbc\u307f\u3068\u4fdd\u6301\u304c\u53ef\u80fd\u3067\u3059\u3002\u3064\u307e\u308a\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3\u30a8\u30e9\u30fc\u306f\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u4e0d\u53ef\u9006\u7684\u306a\u30a8\u30e9\u30fc\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff08\u305f\u3060\u3057\u75b2\u5f0a\u306e\u5f71\u97ff\u306f\u4e0d\u53ef\u9006\u7684\uff09\u3002\u3053\u306e\u305f\u3081\u3053\u306e\u30a8\u30e9\u30fc\u306f\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3\u8d77\u56e0\u306e\u30a8\u30e9\u30fc\u306b\u9650\u3089\u305a\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3078\u8a18\u9332\u3057\u305f\u30c7\u30fc\u30bf\u306b\u30a8\u30e9\u30fc\u304c\u8d77\u304d\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u306f\u3001SSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u304c\u884c\u3046\u8aa4\u308a\u8a02\u6b63\u6642\u306b\u691c\u51fa\u53ef\u80fd\u3067\u3059\u3002\u307e\u305f\u3001\u5b58\u5728\u3059\u308b\u30a8\u30e9\u30fc\u6570\u3082\u540c\u3058\u304f\u8a02\u6b63\u6642\u306b\u308f\u304b\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\uff08\u300c\u4f55\u30d3\u30c3\u30c8\u8a02\u6b63\u3057\u305f\u300d\u306a\u3069\uff09\u3002<\/p>\n\n\n\n<p>\u3000\u3064\u307e\u308a\u3001\u30db\u30b9\u30c8\u304c\u3042\u308b\u30c7\u30fc\u30bf\u3092Read\u3059\u308c\u3070SSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306f\u305d\u306e\u30c7\u30fc\u30bf\u3092NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u304b\u3089\u8aad\u307f\u51fa\u3057\u307e\u3059\u306e\u3067\u3001\u305d\u306e\u969b\u306b\u884c\u3046\u8aa4\u308a\u8a02\u6b63\u306e\u7d50\u679c\u304b\u3089NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u305d\u306e\u30c7\u30fc\u30bf\u306b\u767a\u751f\u3057\u3066\u3044\u308b\u30a8\u30e9\u30fc\u306e\u72b6\u614b\uff08\u30a8\u30e9\u30fc\u6570\uff09\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u969b\u3082\u3057\u30a8\u30e9\u30fc\u6570\u304c\u591a\u3051\u308c\u3070\u3001\u8a02\u6b63\u3057\u3066\u5f97\u305f\u5f53\u8a72\u30c7\u30fc\u30bf\u3092\u5225\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u3067\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3\u306b\u3088\u308a\u751f\u3058\u305f\u30a8\u30e9\u30fc\u3092\u30ea\u30bb\u30c3\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305f\u3060\u3053\u306e\u65b9\u6cd5\u3067\u306f\u3001<strong>\u30db\u30b9\u30c8\u304b\u3089\u8aad\u307f\u51fa\u3055\u308c\u306a\u3044\u9650\u308a<\/strong><strong>NAND<\/strong><strong>\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3078\u8a18\u9332\u3057\u305f\u30c7\u30fc\u30bf\u306b\u84c4\u7a4d\u3057\u305f\u30a8\u30e9\u30fc\u306e\u72b6\u614b\u304c\u308f\u304b\u3089\u306a\u3044<\/strong>\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306e\u6016\u3044\u70b9\u306f\u300c\u3044\u3064\u306e\u9593\u306b\u304b\u30a8\u30e9\u30fc\u304c\u8d77\u304d\u3066\u3044\u3066\uff08\u5897\u3048\u3066\u3044\u3066\uff09\u3044\u3064\u306e\u9593\u306b\u304b\u4fee\u5fa9\u4e0d\u80fd\u306b\u306a\u308b\u300d\u3053\u3068\u3067\u3059\u306e\u3067\u3001\u3053\u308c\u306f\u907f\u3051\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u3053\u3067SSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306f\u3001<strong>\u5b9a\u671f\u7684\u306b<\/strong><strong>NAND<\/strong><strong>\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8a18\u9332\u3057\u305f\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u51fa\u3057\u3066\u84c4\u7a4d\u3057\u305f\u30a8\u30e9\u30fc\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u30d1\u30c8\u30ed\u30fc\u30eb\u3067\u3059\u3002<\/strong>&nbsp;\u30d1\u30c8\u30ed\u30fc\u30eb\u306e\u7d50\u679c\u691c\u51fa\u3057\u305f\u30a8\u30e9\u30fc\u6570\u304c\u591a\u3044\u30c7\u30fc\u30bf\u306f\u5225\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u66f8\u304d\u8fbc\u3093\u3067\u84c4\u7a4d\u3057\u305f\u30a8\u30e9\u30fc\u3092\u30ea\u30bb\u30c3\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30d1\u30c8\u30ed\u30fc\u30eb\u306e\u9593\u9694\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u7a2e\u985e\uff08\u4fe1\u983c\u6027\u4ed5\u69d8\uff09\u3001\u5468\u8fba\u6e29\u5ea6\u3001\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3093\u3067\u304b\u3089\u7d4c\u904e\u3057\u305f\u6642\u9593\u3001\u6d88\u53bb\u56de\u6570\u3001\u306a\u3069\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u304b\u3089\u6c7a\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u5411\u3051SSD\u3067\u306f\u300c1\u65e5\u3067SSD\u306b\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u5168\u30c7\u30fc\u30bf\u3092\u30d1\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u300d\u3068\u3044\u3046\u4ed5\u69d8\u306e\u88fd\u54c1\u3082\u3042\u308b\u304f\u3089\u3044\u3001\u30d1\u30c8\u30ed\u30fc\u30eb\u306f\u91cd\u8981\u306a\u6a5f\u80fd\u3067\u3059\u3002<\/p>\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\">\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6<\/mark><\/h2>\n\n\n\n<p>\u3000\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u306b\u3088\u308b\u30a8\u30e9\u30fc\u306f\u3001\u81ea\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u5468\u8fba\u30e1\u30e2\u30ea\u30bb\u30eb\u304cRead\u3055\u308c\u308b\u305f\u3073\u81ea\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3084\u3059\u304f\u306a\u308b\u73fe\u8c61\u3067\u3059\u3002\u5468\u8fba\u30e1\u30e2\u30ea\u30bb\u30eb\u306eRead\u3055\u308c\u308b\u56de\u6570\u304c\u591a\u304f\u306a\u308c\u3070\u306a\u308b\u307b\u3069\u81ea\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u78ba\u7387\u3082\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u306b\u3088\u308a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u30e1\u30e2\u30ea\u30bb\u30eb\u3082\u3001\u518d\u5ea6\u6d88\u53bb\u3092\u884c\u3046\u3053\u3068\u3067\u901a\u5e38\u901a\u308a\u30c7\u30fc\u30bf\u306e\u66f8\u304d\u8fbc\u307f\u3068\u4fdd\u6301\u304c\u53ef\u80fd\u3067\u3059\u3002\u3064\u307e\u308a\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u306b\u3088\u308b\u30a8\u30e9\u30fc\u306f\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u4e0d\u53ef\u9006\u7684\u306a\u30a8\u30e9\u30fc\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff08\u305f\u3060\u3057\u75b2\u5f0a\u306e\u5f71\u97ff\u306f\u4e0d\u53ef\u9006\u7684\uff09\u3002\u3053\u306e\u305f\u3081\u3053\u306e\u30a8\u30e9\u30fc\u3082\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u306b\u3088\u308b\u30e1\u30e2\u30ea\u30bb\u30eb\u3078\u306e\u5f71\u97ff\u306fRead\u56de\u6570\u306b\u4f9d\u5b58\u3057\u307e\u3059\u306e\u3067\u3001SSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306f\u7279\u5b9a\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u5468\u8fba\u306bRead\u304c\u96c6\u4e2d\u3057\u3066\u3044\u306a\u3044\u304b\u3069\u3046\u304b\u3092\u76e3\u8996\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5f53\u8a72\u30e1\u30e2\u30ea\u30bb\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u51fa\u3057\u3066\u8aa4\u308a\u8a02\u6b63\u3092\u884c\u3044\u767a\u751f\u3057\u3066\u3044\u308b\u30a8\u30e9\u30fc\u6570\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3053\u306e\u969b\u3082\u3057\u30a8\u30e9\u30fc\u6570\u304c\u591a\u3051\u308c\u3070\u3001\u8a02\u6b63\u3057\u3066\u5f97\u305f\u5f53\u8a72\u30c7\u30fc\u30bf\u3092\u5225\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u3067\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u306b\u3088\u308a\u751f\u3058\u305f\u30a8\u30e9\u30fc\u3092\u30ea\u30bb\u30c3\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u3067\u53d7\u3051\u308b\uff08\u4e0e\u3048\u308b\uff09\u5f71\u97ff\u306fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u7a2e\u985e\uff08\u4fe1\u983c\u6027\u4ed5\u69d8\uff09\u306a\u3069\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u300c\u5468\u8fba\u30e1\u30e2\u30ea\u30bb\u30eb\u304c\u4f55\u56deRead\u3055\u308c\u305f\u3089\u30c1\u30a7\u30c3\u30af\u3059\u308b\u304b\u300d\u306a\u3069\u306e\u57fa\u6e96\u306f\u4e88\u3081NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3092\u8a55\u4fa1\u3057\u305f\u7d50\u679c\u306b\u57fa\u3065\u3044\u3066\u6c7a\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4e88\u3081\u8a55\u4fa1\u3057\u305f\u969b\u306b\u300c\u3042\u308bRead\u56de\u6570\u4ed8\u8fd1\u304b\u3089\u30a8\u30e9\u30fc\u6570\u304c\u6025\u6fc0\u306b\u5897\u52a0\u3059\u308b\u300d\u306a\u3069\u306e\u7279\u6027\u304c\u5224\u660e\u3057\u305f\u5834\u5408\u306f\u3001\u30a8\u30e9\u30fc\u6570\u306e\u30c1\u30a7\u30c3\u30af\u3092\u305b\u305a\u306bRead\u56de\u6570\u306e\u307f\u3092\u5224\u65ad\u57fa\u6e96\u3068\u3057\u3066\u5f37\u5236\u7684\u306b\u30c7\u30fc\u30bf\u3092\u30b3\u30d4\u30fc\u3059\u308b\u3088\u3046\u306b\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\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\">\u4e2d\u6027\u5b50\u7dda\u306a\u3069\u306b\u3088\u308b\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc<\/mark><\/h2>\n\n\n\n<p>\u3000NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8a18\u9332\u3057\u305f\u30c7\u30fc\u30bf\u306b\u306f\u3001\u30c7\u30fc\u30bf\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3\u3068\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u4ee5\u5916\u306b\u3082\u5192\u982d\u3067\u8aac\u660e\u3057\u305f\u4e2d\u6027\u5b50\u7dda\u306b\u3088\u308b\u30a8\u30e9\u30fc\u304c\u8d77\u3053\u308a\u5f97\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u308c\u3089\u306e\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306b\u5bfe\u3057\u3066\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u7528\u306b\u8a2d\u8a08\u304a\u3088\u3073\u5b9f\u88c5\u3055\u308c\u305f\u8aa4\u308a\u8a02\u6b63\u65b9\u5f0f\u3067\u307e\u3068\u3081\u3066\u5bfe\u5fdc\u3057\u3066\u3057\u307e\u3046\u3001\u3068\u3044\u3046\u65b9\u91dd\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u5411\u3051\u306bSSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u304c\u5b9f\u88c5\u3059\u308b\u8aa4\u308a\u8a02\u6b63\u7b26\u53f7(ECC)\u306e\u80fd\u529b\u306f\u3001TLC NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u5411\u3051\u3067\u3042\u308c\u3070\u3001\u4f8b\u3048\u30702 KB\uff0816,384\u30d3\u30c3\u30c8\uff09\u3042\u305f\u308a120\u30d3\u30c3\u30c8\u307e\u3067\u8a02\u6b63\u53ef\u80fd<sup>[7]<\/sup>\u3001\u3082\u3046\u5c11\u3057\u80fd\u529b\u306e\u9ad8\u3044\u3082\u306e\u3067\u306f1 KB\u3042\u305f\u308a120\u30d3\u30c3\u30c8\u307e\u3067\u8a02\u6b63\u53ef\u80fd<sup>[8]<\/sup>\u3001\u306a\u3069\u3067\u3059\u3002\u307e\u305f\u6700\u8fd1\u306eSSD\u306f\u3001SSD\u5185\u90e8\u3067RAID (Redundant Array of Inexpensive Disks)\u306a\u3069\u3092\u69cb\u6210\u3057\u3066\u6d88\u5931\u8a02\u6b63\u80fd\u529b\u3092\u6301\u305f\u305b\u308b\u3082\u306e\u3082\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u308c\u3089\u306eSSD\u3067\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u7279\u6027\u306b\u3088\u308b\u30a8\u30e9\u30fc\u306b\u52a0\u3048\u4e2d\u6027\u5b50\u7dda\u306b\u3088\u308b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3082\u4e0a\u8a18\u8aa4\u308a\u8a02\u6b63\u80fd\u529b\u3067\u5bfe\u51e6\u3067\u304d\u308b\u7bc4\u56f2\u5185\u3067\u3042\u308b\u3068\u3044\u3046\u5224\u65ad\u306e\u3082\u3068\u3001\u5f8c\u8005\u306e\u30a8\u30e9\u30fc\u306b\u500b\u5225\u306b\u5bfe\u5fdc\u3059\u308b\u6a5f\u80fd\u3092\u6301\u305f\u305b\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308a\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\">\u304a\u308f\u308a\u306b<\/mark><\/h2>\n\n\n\n<p>\u3000\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001SSD\u306b\u304a\u3051\u308bSDC\u7279\u306b\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u8d77\u56e0\u306e\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306b\u3064\u3044\u3066\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8d77\u304d\u308b\u4e8b\u8c61\u3068\u305d\u306e\u5bfe\u7b56\u3092\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3000NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3067\u767a\u751f\u3059\u308b\u30bd\u30d5\u30c8\u30a8\u30e9\u30fc\u306f\u3001\u305d\u306e\u69cb\u9020\u304b\u3089\u30e1\u30e2\u30ea\u30bb\u30eb\u3067\u767a\u751f\u3059\u308b\u3082\u306e\u304c\u307b\u3068\u3093\u3069\u3068\u8003\u3048\u3089\u308c\u3001\u4f8b\u3048\u3070\u30c7\u30fc\u30bf\u30ea\u30c6\u30f3\u30b7\u30e7\u30f3\u3084\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u306b\u3088\u308b\u30a8\u30e9\u30fc\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u305d\u3057\u3066\u305d\u308c\u3089\u306e\u30a8\u30e9\u30fc\u306b\u5bfe\u3057\u3066\u624b\u9045\u308c\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u306bSSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u304c\u5bfe\u7b56\u3092\u65bd\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u6b21\u56de\u306e\u8a18\u4e8b\u3067\u306fSSD\u3092\u69cb\u6210\u3059\u308bNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u4ee5\u5916\u306e\u8981\u7d20\u3067\u8d77\u304d\u308b\u4e8b\u8c61\u3068\u305d\u306e\u5bfe\u7b56\u3092\u8aac\u660e\u3057\u307e\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\">References<\/mark><\/h2>\n\n\n\n<p>[1] A. Taber and E. Normand,&nbsp;<em>&#8220;<\/em><a href=\"https:\/\/ieeexplore.ieee.org\/document\/212327\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Single event upset in avionics<\/em><\/a><em>,&#8221;<\/em>&nbsp;in IEEE Transactions on Nuclear Science, vol.40, no.2, pp.120-126, April 1993<br>[2] F. Wrobel, et al.,&nbsp;<em>&#8220;<\/em><a href=\"https:\/\/ieeexplore.ieee.org\/document\/1263841\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Contribution of SiO<sub>2<\/sub>&nbsp;in neutron-induced SEU in SRAMs<\/em><\/a><em>,&#8221;<\/em>&nbsp;in IEEE Transactions on Nuclear Science, vol.50, no.6, pp.2055-2059, December 2003<br>[3] N. Seifert, et al.,&nbsp;<em>&#8220;<\/em><a href=\"https:\/\/ieeexplore.ieee.org\/document\/4017161\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Radiation-Induced Soft Error Rates of Advanced CMOS Bulk Devices<\/em><\/a><em>,&#8221;<\/em>&nbsp;in Proceedings of IEEE International Reliability Physics Symposium, pp.217-225, March 2006<br>[4] David F. Heidel, et al.,&nbsp;<em>&#8220;<\/em><a href=\"https:\/\/ieeexplore.ieee.org\/document\/5341353\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Single-Event Upsets and Multiple-Bit Upsets on a 45 nm SOI SRAM<\/em><\/a><em>,&#8221;<\/em>&nbsp;in IEEE Transactions on Nuclear Science, vol.56, no.6, pp.3499-3504, December 2009<br>[5] G. Cellere, et al.,&nbsp;<em>&#8220;<\/em><a href=\"https:\/\/ieeexplore.ieee.org\/document\/4796693\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Neutron-induced soft errors in advanced flash memories<\/em><\/a><em>,&#8221;<\/em>&nbsp;in Proceedings of IEEE International Electron Devices Meeting (IEDM), December 2008<br>[6] Harish Dattatraya Dixit,&nbsp;<em>&#8220;<\/em><a href=\"https:\/\/engineering.fb.com\/2021\/02\/23\/data-infrastructure\/silent-data-corruption\/\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Mitigating the effects of silent data corruption at scale<\/em><\/a><em>,&#8221;<\/em>&nbsp;February 23, 2021<br>[7]&nbsp;<em>&#8220;<\/em><a href=\"https:\/\/www.gdm.or.jp\/pressrelease\/2019\/0408\/300788\" target=\"_blank\" rel=\"noreferrer noopener\"><em>120bits\/2kb ECC\u3068End-to-End\u30c7\u30fc\u30bf\u4fdd\u8b77\u3092\u642d\u8f09\u3057\u305fNVMe SSD\u3001Apacer\u300cAS2280P4\u300d<\/em><\/a><em>&#8220;<\/em>\u30012019\u5e744\u67088\u65e5\uff082025\u5e742\u670819\u65e5\u95b2\u89a7\uff09<br>[8] Jeff Yang, <em>\u201cThe Efficient LDPC DSP System for SSD,\u201d<\/em> Flash Memory Summit 2013, Santa Clara, CA, August, 2013<\/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\">\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__11\" 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\u3001SSD\u306b\u304a\u3051\u308bSilent Data Corruption\u306b\u3064\u3044\u3066\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8d77\u304d\u308b\u4e8b\u8c61\u3068\u305d\u306e\u5bfe\u7b56\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":4,"featured_media":4871,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[23,24,35],"class_list":["post-4849","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-reliability","tag-nvme-ssd","tag-sata-ssd","tag-35"],"_links":{"self":[{"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/posts\/4849","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\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4849"}],"version-history":[{"count":13,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/posts\/4849\/revisions"}],"predecessor-version":[{"id":4872,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/posts\/4849\/revisions\/4872"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=\/wp\/v2\/media\/4871"}],"wp:attachment":[{"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4849"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4849"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hagisol.co.jp\/techblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4849"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}