{"id":3358,"date":"2023-10-30T19:20:00","date_gmt":"2023-10-30T10:20:00","guid":{"rendered":"https:\/\/www.hagisol.co.jp\/techblog\/?p=3358"},"modified":"2024-07-17T07:42:59","modified_gmt":"2024-07-16T22:42:59","slug":"post-3358","status":"publish","type":"post","link":"https:\/\/www.hagisol.co.jp\/techblog\/?p=3358","title":{"rendered":"SSD\u306e\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u51e6\u7406"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large is-style-default\"><img decoding=\"async\" src=\"https:\/\/www.hagisol.co.jp\/techblog\/wp-content\/uploads\/2023\/08\/AdobeStock_469142599-1024x684.jpeg\" alt=\"\" class=\"wp-image-3370\"\/><\/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:\/\/www.hagisol.co.jp\/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\/5f89c5ed9b9c1b9eba65\" target=\"_blank\">2022\u5e749\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>\u3000NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3092\u8a18\u61b6\u5a92\u4f53\u3068\u3059\u308bSolid State Drive (SSD)\u306b\u8a18\u9332\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3078\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u5bfe\u7b56\u3068\u3057\u3066\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u9ad8\u3081\u308b\u65b9\u6cd5\u306b\u306f\u3001Advanced Encryption Standard (AES)\u306a\u3069\u306b\u3088\u308b\u6697\u53f7\u5316\u304c\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u5b9f\u306f\u3001SSD\u306e\u6697\u53f7\u5316\u3092\u6709\u52b9\u306b\u305b\u305a\u306bSSD\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3093\u3060\u5834\u5408\u3067\u3082\u3001SSD\u306b\u642d\u8f09\u3055\u308c\u305fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u306fSSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306b\u3088\u308a\u52a0\u5de5\u3055\u308c\u305f\u30c7\u30fc\u30bf\u304c\u8a18\u9332\u3055\u308c\u307e\u3059\u3002\u751f\u30c7\u30fc\u30bf\u304c\u305d\u306e\u307e\u307e\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u52a0\u5de5\u51e6\u7406\u306e\u3053\u3068\u3092<strong>\u30b9\u30af\u30e9\u30f3\u30d6\u30eb<\/strong>\u3084<strong>\u30e9\u30f3\u30c0\u30de\u30a4\u30ba<\/strong>\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u3068\u304d\u52a0\u5de5\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30e1\u30fc\u30ab\u30fc\u306e\u898f\u5b9a\u3059\u308b\u6027\u8cea\u3092\u5099\u3048\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3001SSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3057\u304b\u77e5\u308a\u5f97\u306a\u3044\u69d8\u3005\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u7528\u3044\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8a18\u9332\u3055\u308c\u305f\uff08\u52a0\u5de5\u3055\u308c\u305f\uff09\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u51fa\u3057\u3066\u3001\u305d\u306e\u30c7\u30fc\u30bf\u3092\u751f\u6210\u3057\u305fSSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306e\u529b\u3092\u501f\u308a\u305a\u306b\u5143\u306e\u30c7\u30fc\u30bf\u3092\u5fa9\u5143\u3059\u308b\u3068\u3044\u3046\u653b\u6483\u306f\u307b\u307c\u6210\u529f\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3000\u305f\u3060\u3057\u3001\u4e0a\u8a18\u30c7\u30fc\u30bf\u52a0\u5de5\u306e\u672c\u6765\u306e\u76ee\u7684\u306fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8a18\u9332\u3057\u305f\u30c7\u30fc\u30bf\u306e\u4fe1\u983c\u6027\u5411\u4e0a\uff08\u4f4e\u4e0b\u6291\u5236\uff09\u3067\u3042\u308a\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u5bfe\u7b56\uff08\u96e3\u8aad\u5316\uff09\u3067\u306f\u306a\u3044\u3053\u3068\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306f\u4e0a\u8a18\u300cNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u969b\u306e\u30c7\u30fc\u30bf\u52a0\u5de5\u300d\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/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>\u30db\u30b9\u30c8\u304cSSD\u306b\u66f8\u304d\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\u306f\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u3055\u308c\u3066NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u307e\u308c\u308b<\/li>\n\n\n\n<li>\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u306fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u5bff\u547d\u3092\u6700\u5927\u9650\u6d3b\u7528\u3059\u308b\u305f\u3081\u306b\u5fc5\u9808<\/li>\n\n\n\n<li>\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u306fSSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306e\u6a5f\u80fd\u3067\u3042\u308a\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306a\u3057\u3067\u306e\u30c7\u30fc\u30bf\u5fa9\u5143\u306f\u56f0\u96e3\u3060\u304c\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u5bfe\u7b56\u6a5f\u80fd\u3067\u306f\u306a\u3044\u3053\u3068\u306b\u6ce8\u610f<\/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\">SSD\u5185\u90e8\u306e\u30c7\u30fc\u30bf\u306e\u6d41\u308c<\/mark><\/h2>\n\n\n\n<p>\u3000\u56f31\u306f\u3001SSD\u306e\u4e2d\u3067\u30c7\u30fc\u30bf\u304c\u3069\u306e\u3088\u3046\u306b\u51e6\u7406\uff08\u52a0\u5de5\uff09\u3055\u308c\u3066\u30db\u30b9\u30c8\u3068NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u9593\u3092\u884c\u304d\u6765\u3059\u308b\u304b\uff08\u30c7\u30fc\u30bf\u30d1\u30b9\uff09\u306e\u30a4\u30e1\u30fc\u30b8\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u56f3\u306f\u30012019\u5e74\u306b\u958b\u50ac\u3055\u308c\u305fFlash Memory Summit\u3067\u306e\u8b1b\u6f14\u8cc7\u6599<sup>[1]<\/sup>\u3092\u53c2\u8003\u306b\u4f5c\u6210\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:\/\/www.hagisol.co.jp\/techblog\/wp-content\/uploads\/2023\/08\/ssd-data-path-base-3-1024x264.png\" alt=\"\" class=\"wp-image-3367\"\/><figcaption class=\"wp-element-caption\"><em>\u56f31\uff1aSSD\u306b\u304a\u3051\u308b\u30c7\u30fc\u30bf\u30d1\u30b9\uff08\u30a4\u30e1\u30fc\u30b8\uff09<\/em><\/figcaption><\/figure>\n\n\n\n<p>\u3000\u306a\u304a\u3001\u5168\u3066\u306eSSD\u304c\u56f31\u306b\u793a\u3057\u305f\u5168\u3066\u306e\u6a5f\u80fd\u3092\u6709\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u6a5f\u80fd\u3092\u6709\u3057\u3066\u3044\u3066\u3082\u56f31\u3068\u540c\u3058\u9806\u756a\u306b\u7e4b\u3052\u3089\u308c\u3066\u3044\u308b\u3068\u3082\u9650\u308a\u307e\u305b\u3093\u306e\u3067\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u3000\u5404\u6a5f\u80fd\u306e\u6982\u8981\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>End-to-End Data Path Protection<\/strong>\uff1aNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3092\u9664\u304fSSD\u5185\u90e8\u3067\u767a\u751f\u3059\u308b\u30c7\u30fc\u30bf\u8aa4\u308a\u306e\u5305\u62ec\u7684\u691c\u51fa\u7528\u6a5f\u69cb\u3002Cyclic Redundancy Check (CRC)\u7b26\u53f7\u304c\u591a\u3044\u3002<\/li>\n\n\n\n<li><strong>Compression<\/strong>\uff1a\u5727\u7e2e\u30a8\u30f3\u30b8\u30f3\u3002NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u3080\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u306e\u524a\u6e1b\u304c\u76ee\u7684\u3002\u4f7f\u7528\u3059\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3088\u308a\u7279\u6027\u306f\u7570\u306a\u308b\u3002<\/li>\n\n\n\n<li><strong>Encryption<\/strong>\uff1a\u6697\u53f7\u30a8\u30f3\u30b8\u30f3\u3002AES\u304c\u591a\u3044\u3002<\/li>\n\n\n\n<li><strong>ECC<\/strong>\uff1a\u8aa4\u308a\u8a02\u6b63\u30a8\u30f3\u30b8\u30f3\u3002\u6700\u65b0\u306e3D NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u5411\u3051\u3067\u306fLow Density Parity Check (LDPC)\u7b26\u53f7\u304c\u4e00\u822c\u7684\u3002<\/li>\n\n\n\n<li><strong>Scrambler<\/strong>\uff1a\u30b9\u30af\u30e9\u30f3\u30d6\u30e9\u3002NAND\u306b\u66f8\u304d\u8fbc\u3080\u30c7\u30fc\u30bf\u304cNAND\u30e1\u30fc\u30ab\u30fc\u898f\u5b9a\u306e\u7279\u5fb4\u3092\u6709\u3059\u308b\u3088\u3046\u306b\u52a0\u5de5\uff08\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\uff09\u3059\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3053\u306e\u3046\u3061End-to-End Data Path Protection\uff08\u4ee5\u964dE2EDPP\u3068\u8a18\u8f09\uff09\u3068ECC\u306e\u30a8\u30f3\u30b3\u30fc\u30c0\u306f\u3001\u5165\u529b\u30c7\u30fc\u30bf\u3092\u30a8\u30f3\u30b3\u30fc\u30c9\u3057\u3066\u8aa4\u308a\u691c\u51fa\u306b\u7528\u3044\u308b\u30d1\u30ea\u30c6\u30a3\u3092\u51fa\u529b\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u5165\u529b\u30c7\u30fc\u30bf\u3092\u52a0\u5de5\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u308c\u306b\u5bfe\u3057\u3001\u5727\u7e2e\u3001\u6697\u53f7\u3001\u30b9\u30af\u30e9\u30f3\u30d6\u30e9\u3001\u306e3\u3064\u306f\u3001\u5165\u529b\u30c7\u30fc\u30bf\u3092\u52a0\u5de5\u3057\u305f\u30c7\u30fc\u30bf\u3092\u51fa\u529b\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u5165\u529b\u30c7\u30fc\u30bf\u3068\u51fa\u529b\u30c7\u30fc\u30bf\u304c\u7570\u306a\u308a\u307e\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\">\u4e00\u822c\u7684\u306aSSD\u306e\u5834\u5408<\/mark><\/h2>\n\n\n\n<p>\u3000\u79c1\u305f\u3061\u304c\u5e97\u982d\u3067\u8cfc\u5165\u3067\u304d\u308b\u3088\u3046\u306aSSD\u306f\u3001\u51fa\u8377\u72b6\u614b\u3067\u306fE2EDPP\u306a\u3057\u3001\u5727\u7e2e\u306a\u3057\u3001\u6697\u53f7\u5316\u7121\u52b9\u3001\u3068\u3044\u3046\u8a2d\u5b9a\u306e\u88fd\u54c1\u304c\u591a\u3044\u3067\u3059\u3002\u305d\u306e\u3088\u3046\u306aSSD\u3067\u306f\u3001\u30db\u30b9\u30c8\u304b\u3089\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u969b\u306e\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u304c\u56f32\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img decoding=\"async\" src=\"https:\/\/www.hagisol.co.jp\/techblog\/wp-content\/uploads\/2023\/08\/ssd-data-path-ecc-and-scrambler-4-1024x474.png\" alt=\"\" class=\"wp-image-3368\"\/><figcaption class=\"wp-element-caption\"><em>\u56f32\uff1aECC\u3068\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u306e\u307f\u304c\u6709\u52b9\u306aSSD\u306b\u304a\u3051\u308b\u30c7\u30fc\u30bf\u30d1\u30b9\uff08\u30a4\u30e1\u30fc\u30b8\uff09<\/em><\/figcaption><\/figure>\n\n\n\n<p>\u3000\u30db\u30b9\u30c8\u304b\u3089\u66f8\u304d\u8fbc\u307e\u308c\u305f\u30c7\u30fc\u30bf\u306f\u3001\u30b9\u30af\u30e9\u30f3\u30d6\u30e9\u306b\u5165\u529b\u3055\u308c\u308b\u307e\u3067\u52a0\u5de5\u3055\u308c\u308b\u3053\u3068\u306f\u306a\u304f\u3001\u30db\u30b9\u30c8\u304b\u3089\u66f8\u304d\u8fbc\u307e\u308c\u305f\u5024\u3092\u305d\u306e\u307e\u307e\u7dad\u6301\u3057\u307e\u3059\u3002\u30b9\u30af\u30e9\u30f3\u30d6\u30e9\u306f\u5165\u529b\u30c7\u30fc\u30bf\uff08\uff1d\u30db\u30b9\u30c8\u304b\u3089\u66f8\u304d\u8fbc\u307e\u308c\u305f\u751f\u30c7\u30fc\u30bf\uff09\u3092NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3078\u306e\u66f8\u304d\u8fbc\u307f\u306b\u9069\u3057\u305f\u30c7\u30fc\u30bf\u306b\u52a0\u5de5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u305f\u3081\u3001\u30db\u30b9\u30c8\u304b\u3089\u3069\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u304c\u66f8\u304d\u3053\u307e\u308c\u3066\u3082\u3001SSD\u306eNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u306f\u30b9\u30af\u30e9\u30f3\u30d6\u30e9\u306b\u3088\u308a\u52a0\u5de5\u3055\u308c\u305f\u30c7\u30fc\u30bf\u304c\u66f8\u304d\u8fbc\u307e\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001<strong>\u30db\u30b9\u30c8\u304b\u3089\u30aa\u30fc\u30eb0\u3084\u30aa\u30fc\u30eb1\u306e\u30c7\u30fc\u30bf\u304c\u66f8\u304d\u8fbc\u307e\u308c\u3066\u3082\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u30aa\u30fc\u30eb0\u3084\u30aa\u30fc\u30eb1\u306e\u30c7\u30fc\u30bf\u304c\u66f8\u304d\u8fbc\u307e\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093<\/strong>\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\">\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u306e\u76ee\u7684<\/mark><\/h2>\n\n\n\n<p>\u3000\u4e0a\u8a18\u306e\u901a\u308a\u3001\u30b9\u30af\u30e9\u30f3\u30d6\u30e9\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u76f4\u524d\u306b\u4f4d\u7f6e\u3057\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u3080\u30c7\u30fc\u30bf\u304cNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30e1\u30fc\u30ab\u30fc\u898f\u5b9a\u306e\u6027\u8cea\u3092\u5099\u3048\u308b\u3088\u3046\u306b\u30c7\u30fc\u30bf\u3092\u52a0\u5de5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u306e\u76ee\u7684\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8a18\u9332\u3057\u305f\u30c7\u30fc\u30bf\u306e\u4fe1\u983c\u6027\u5411\u4e0a\uff08\u4f4e\u4e0b\u7de9\u548c\uff09\u3068\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\uff08\u30e1\u30e2\u30ea\u30bb\u30eb\uff09\u306e\u9577\u5bff\u547d\u5316\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u3082\u305d\u3082\u3001\u30e1\u30fc\u30ab\u30fc\u304b\u3089\u793a\u3055\u308c\u308bNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u4ed5\u69d8\u306b\u8a18\u8f09\u3055\u308c\u308b\u8a18\u9332\u3057\u305f\u30c7\u30fc\u30bf\u306e\u4fe1\u983c\u6027\uff08\u30c7\u30fc\u30bf\u4fdd\u6301\u7279\u6027\uff09\u3068\u5bff\u547d\uff08\u66f8\u304d\u63db\u3048\u56de\u6570\uff09\u306f\u3001<strong>\u30b9\u30af\u30e9\u30f3\u30d6\u30e9\u306b\u3088\u308a\u9069\u5207\u306b\u52a0\u5de5\u3055\u308c\u305f\u30c7\u30fc\u30bf\u304cNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u66f8\u304d\u8fbc\u307e\u308c\u308b\u3053\u3068\u304c\u524d\u63d0\u3067\u3059<\/strong>\u3002<\/p>\n\n\n\n<p>\u3000\u30b9\u30af\u30e9\u30f3\u30d6\u30e9\u306b\u3088\u308a\u52a0\u5de5\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306b\u6c42\u3081\u3089\u308c\u308b\u6027\u8cea\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30e1\u30fc\u30ab\u30fc\u306b\u3088\u308a\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u5c11\u306a\u304f\u3068\u30820\u30681\u306e\u51fa\u73fe\u983b\u5ea6\u306b\u504f\u308a\u304c\u306a\u3044\u30c7\u30fc\u30bf\u3067\u3042\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u66f8\u304d\u8fbc\u3080\u30c7\u30fc\u30bf\u306b\u3053\u306e\u6027\u8cea\u304c\u6c42\u3081\u3089\u308c\u308b\u7406\u7531\u3068\u3057\u3066\u3001\u96a3\u63a5\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\uff08\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\uff09\u9593\u306e\u5f71\u97ff\u5e73\u6e96\u5316\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u305d\u3057\u3066\u3042\u308b\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\u306b\u6ce8\u76ee\u3057\u305f\u5834\u5408\u306b\u7279\u5b9a\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u9ad8\u3044\u96fb\u5727\uff08\u8ca0\u8377\uff09\u304c\u304b\u304b\u308a\u7d9a\u3051\u308b\u3053\u3068\u3092\u907f\u3051\u3066\u5168\u3066\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u3067\u304d\u308b\u3060\u3051\u5c11\u306a\u3044\u56de\u6570\u3067\u304b\u3064\u5747\u7b49\u306b\u8ca0\u8377\u3092\u304b\u3051\u308b\u3053\u3068\u3001\u3082\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u300c\u30df\u30af\u30ed\u306a\u30a6\u30a7\u30a2\u30ec\u30d9\u30ea\u30f3\u30b0\u300d\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u96a3\u63a5\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\u9593\u306e\u5f71\u97ff\u3068\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u69cb\u9020\u306b\u8d77\u56e0\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u56f33\u306f3D NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\u3068\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u7c21\u7565\u5316\u3057\u305f\u69cb\u9020\u30a4\u30e1\u30fc\u30b8\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:\/\/www.hagisol.co.jp\/techblog\/wp-content\/uploads\/2023\/08\/wordline-and-memory-cell-structure-image-1024x249.png\" alt=\"\" class=\"wp-image-3369\"\/><figcaption class=\"wp-element-caption\"><em>\u56f33\uff1a3D NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\u3068\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u95a2\u4fc2\uff08\u30a4\u30e1\u30fc\u30b8\uff09<\/em><\/figcaption><\/figure>\n\n\n\n<p>\u30003D NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306f\u3001\u56f33\u306e\u3088\u3046\u306b\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\u304c\u4f55\u5c64\u306b\u3082\u7a4d\u5c64\u3055\u308c\u3066\u3044\u3066\u3001\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\u3092\u8cab\u3044\u305f\u5834\u6240\uff08\u3088\u308a\u6b63\u78ba\u306b\u306f\u8cab\u3044\u305f\u5074\u58c1\u90e8\u5206\uff09\u306b\u30e1\u30e2\u30ea\u30bb\u30eb\u304c\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u5bfe\u3057\u3066\u300c\u96a3\u63a5\u30e1\u30e2\u30ea\u30bb\u30eb\u300d\u304c\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002\u56f33\u306e\u4f8b\u3067\u306f\u3001\u30e1\u30e2\u30ea\u30bb\u30ebA\u306e\u96a3\u63a5\u30e1\u30e2\u30ea\u30bb\u30eb\u3092\u3001\u4e21\u96a3\u306e\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u3068\u540c\u3058\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\u306e\u4e21\u96a3\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u5408\u8a088\u3064\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3042\u308b\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u5bfe\u3057\u3066\u3069\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u304c\u5f71\u97ff\u3092\u8003\u616e\u3059\u3079\u304d\u96a3\u63a5\u30e1\u30e2\u30ea\u30bb\u30eb\u306a\u306e\u304b\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30e1\u30fc\u30ab\u30fc\u3084\u30e1\u30e2\u30ea\u306e\u4e16\u4ee3\u306b\u3088\u308a\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u96a3\u63a5\u30e1\u30e2\u30ea\u30bb\u30eb\u304c\u91cd\u8981\u306a\u306e\u306f\u3001\u96a3\u63a5\u3059\u308b\u30e1\u30e2\u30ea\u30bb\u30eb\u9593\u306e\u8ddd\u96e2\u304a\u3088\u3073\u96a3\u63a5\u3059\u308b\u30ef\u30fc\u30c9\u30e9\u30a4\u30f3\u9593\u306e\u8ddd\u96e2\u304c\u77ed\u304f\u306a\u308b\u3053\u3068\u3067\u3001\u3042\u308b\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u969b\u306b\u96a3\u63a5\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u72b6\u614b\uff08\u84c4\u3048\u3089\u308c\u305f\u96fb\u8377\u3001\u3064\u307e\u308a\u8a18\u9332\u3055\u308c\u305f\u30c7\u30fc\u30bf\uff09\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3084\u3059\u304f\u306a\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u56f33\u306e\u30e1\u30e2\u30ea\u30bb\u30ebA\u306b\u6ce8\u76ee\u3057\u305f\u969b\u306b\u3001\u96a3\u63a5\u30e1\u30e2\u30ea\u30bb\u30eb\u3067\u3042\u308b\u30e1\u30e2\u30ea\u30bb\u30eba\uff5eh\u304c\u84c4\u3048\u3089\u308c\u305f\u96fb\u8377\u304c\u591a\u3044\uff08\uff1d\u96fb\u5727\u304c\u9ad8\u3044\uff09\u30e1\u30e2\u30ea\u30bb\u30eb\u3070\u304b\u308a\u3060\u3068\u3001\u30e1\u30e2\u30ea\u30bb\u30ebA\u306e\u96fb\u5727\u3082\u305d\u308c\u3089\u306b\u5f71\u97ff\u3092\u53d7\u3051\u3066\u9ad8\u304f\u306a\u308a\u3001\u7d50\u679c\u7684\u306b\u30e1\u30e2\u30ea\u30bb\u30ebA\u306b\u610f\u56f3\u3057\u305f\u30ec\u30d9\u30eb\u306b\u66f8\u304d\u8fbc\u3081\u306a\u3044\u3082\u3057\u304f\u306f\u66f8\u304d\u8fbc\u307e\u308c\u305f\u30c7\u30fc\u30bf\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u3088\u3046\u306a\u96a3\u63a5\u30e1\u30e2\u30ea\u30bb\u30eb\u9593\u306e\u5f71\u97ff\u3092\u3067\u304d\u308b\u3060\u3051\u5e73\u6e96\u5316\u3059\u308b\u305f\u3081\u306b\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4e00\u65b9\u3001\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u9ad8\u3044\u96fb\u5727\uff08\u8ca0\u8377\uff09\u304c\u304b\u304b\u308a\u7d9a\u3051\u308b\u306e\u3092\u907f\u3051\u308b\u3053\u3068\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u84c4\u3048\u3089\u308c\u305f\u96fb\u8377\u3068\u8a18\u9332\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u5bfe\u5fdc\u95a2\u4fc2\u306b\u8d77\u56e0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u56f34\u306f\u3001TLC NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u304a\u3051\u308b\u3001\u30bb\u30eb\u304c\u84c4\u3048\u308b\u96fb\u8377\uff08\uff1d\u96fb\u5727\u30ec\u30d9\u30eb\uff09\u3068\u5bfe\u5fdc\u3059\u308b\u5024\u306e\u5bfe\u5fdc\u95a2\u4fc2\uff08\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09\u306e\u4f8b<sup>[2]<\/sup>\u3067\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:\/\/www.hagisol.co.jp\/techblog\/wp-content\/uploads\/2023\/08\/memory-cell-and-vth-2.png\" alt=\"\" class=\"wp-image-3371\"\/><figcaption class=\"wp-element-caption\"><em>\u56f34\uff1aTLC NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u304a\u3051\u308b\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u3068\u5bfe\u5fdc\u3059\u308b\u5024\u306e\u4f8b<\/em><\/figcaption><\/figure>\n\n\n\n<p>\u3000\u56f34\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u63a1\u7528\u3057\u305fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u300c\u30aa\u30fc\u30eb1\u300d\u306e\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u307f\u7d9a\u3051\u308b\u3068\u3001\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u306f\u6bce\u56de\u300c\u96fb\u5727\u30ec\u30d9\u30ebF\u300d\u76f8\u5f53\u306e\u96fb\u5727\u3064\u307e\u308a\u8ca0\u8377\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u300c\u96fb\u5727\u30ec\u30d9\u30ebF\u300d\u306f\u76f8\u5bfe\u7684\u306b\u9ad8\u3044\u96fb\u5727\u3067\u3042\u308a\u3001\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u3068\u308a\u5f37\u3044\u8ca0\u8377\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u5f37\u3044\u8ca0\u8377\u3092\u304b\u3051\u7d9a\u3051\u308b\u3068\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u30c7\u30fc\u30bf\u4fdd\u6301\u7279\u6027\u304c\u60aa\u5316\u3057\u307e\u3059\u306e\u3067\u3001\u8a18\u9332\u3057\u305f\u30c7\u30fc\u30bf\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u4e0b\u3057\u3001\u304b\u3064\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u5bff\u547d\u304c\u77ed\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305f\u3060\u3001\u3069\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u304c\u30db\u30b9\u30c8\u304b\u3089\u4e0e\u3048\u3089\u308c\u3066\u3082NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u5168\u3066\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u304b\u3051\u308b\u96fb\u5727\u3092\u5e38\u306b\u4f4e\u304f\u3059\u308b\u3053\u3068\u306f\u7121\u7406\u3067\u3059\u306e\u3067\u3001\u3044\u305a\u308c\u304b\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u304c\u4f4e\u3044\u6642\u306b\u305d\u306e\u4ee3\u308f\u308a\u306b\u307b\u304b\u306e\u3044\u305a\u308c\u304b\u306e\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u304b\u304b\u308b\u96fb\u5727\u304c\u9ad8\u304f\u306a\u308b\u3053\u3068\u306f\u3084\u3080\u3092\u5f97\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u3088\u3046\u306a\u7406\u7531\u304b\u3089\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30e1\u30fc\u30ab\u30fc\u306f\u3001\u30e1\u30e2\u30ea\u30bb\u30eb\u306b\u66f8\u304d\u8fbc\u3080\u30c7\u30fc\u30bf\uff08\u96fb\u5727\u30ec\u30d9\u30eb\uff09\u306b\u5bfe\u3057\u3066\u3001\u5168\u3066\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u306e\u51fa\u73fe\u983b\u5ea6\u306b\u504f\u308a\u304c\u306a\u3044\u3053\u3068\u3092\u6c42\u3081\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u306b\u3088\u308a\u3001\u30db\u30b9\u30c8\u8996\u70b9\u3067\u306f\u540c\u3058\u30c7\u30fc\u30bf\u3092\u540c\u3058\u30a2\u30c9\u30ec\u30b9(LBA)\u306b\u66f8\u304f\uff08\u4e0a\u66f8\u304d\u3059\u308b\uff09\u5834\u5408\u3001\u3088\u308aNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8fd1\u3044\u8996\u70b9\u3067\u306f\u540c\u3058\u5143\u30c7\u30fc\u30bf\uff08\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u524d\u306e\u30c7\u30fc\u30bf\uff09\u3092\u540c\u3058\u30a2\u30c9\u30ec\u30b9\uff08NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u4e0a\u306e\u4f4d\u7f6e\uff09\u306b\u66f8\u304f\u5834\u5408\u3067\u3082\u3001\u6bce\u56de\u7570\u306a\u308b\u30c7\u30fc\u30bf\u304c\u66f8\u304d\u8fbc\u307e\u308c\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\">\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u306f\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306e\u5f79\u76ee<\/mark><\/h2>\n\n\n\n<p>\u3000\u3053\u306e\u3088\u3046\u306b\u3001\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u306fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3092\u512a\u3057\u304f\u4f7f\u7528\u3057\u3066\u5bff\u547d\u3092\u6700\u5927\u9650\u5f15\u304d\u51fa\u3059\u305f\u3081\u306b\u91cd\u8981\u306a\u6a5f\u80fd\u3067\u3059\u30023\u6b21\u5143\u5316\u3057\u3066\u69cb\u9020\u304c\u8907\u96d1\u5316\u3092\u5897\u3057\u305f\u6700\u8fd1\u306eNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3067\u306f\u3001\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u6642\u306b\u8003\u616e\u304c\u5fc5\u8981\u306a\u8981\u7d20\u3082\u5897\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u3092\u5b9f\u884c\u3059\u308b\u306e\u306f\u3001\u56f31\u3068\u56f32\u306b\u793a\u3057\u305f\u901a\u308aSSD\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3067\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u5468\u671f\u306e\u9577\u3044\u7cfb\u5217\u3092\u751f\u6210\u3059\u308b\u6570\u5f0f\uff08\u751f\u6210\u591a\u9805\u5f0f\uff09\u306e\u5229\u7528\u3084\u30c6\u30fc\u30d6\u30eb\uff08\u8868\uff09\u306e\u53c2\u7167\u306a\u3069\u306b\u3088\u308a\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u30e1\u30fc\u30ab\u30fc\u304c\u793a\u3059\u8981\u6c42\u3092\u6e80\u305f\u3059\u3088\u3046\u306a\u504f\u308a\u306e\u306a\u3044\u7591\u4f3c\u4e71\u6570\u7cfb\u5217\u3092\u751f\u6210\u3057\u3066\u52a0\u5de5\u306b\u5229\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u7d50\u679c\u3068\u3057\u3066\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8a18\u9332\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306f\u3001\u305d\u306e\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3093\u3060\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3067\u306a\u3051\u308c\u3070\u5143\u30c7\u30fc\u30bf\u3064\u307e\u308a\u30db\u30b9\u30c8\u304b\u3089SSD\u306b\u66f8\u304d\u8fbc\u307e\u308c\u305f\u30c7\u30fc\u30bf\u3092\u5fa9\u5143\u3059\u308b\u3053\u3068\u304c\u56f0\u96e3\u306a\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3064\u307e\u308a\u3001SSD\u304b\u3089NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3060\u3051\u3092\u5265\u304c\u3057\u3066\u8a18\u9332\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u51fa\u3057\u3001\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u3055\u308c\u308b\u524d\u306e\u30c7\u30fc\u30bf\uff08\u751f\u30c7\u30fc\u30bf\uff09\u3092\u76d7\u3080\u3001\u3068\u3044\u3046\u3053\u3068\u306f\u3068\u3066\u3082\u96e3\u3057\u3044\u306e\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 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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\">Reference<\/mark><\/h2>\n\n\n\n<p>[1] Roman Pletka, <em>&#8220;NAND Flash Media Management Algorithms,&#8221;<\/em> Flash Memory Summit 2019, Santa Clara, CA, August 2019<br>[2] Shun Suzuki, et al., <em>&#8220;Endurance-based Dynamic VTHDistribution Shaping of 3D-TLC NAND Flash Memories to Suppress Both Lateral Charge Migration and Vertical Charge De-trap and Increase Data-retention Time by 2.7x&#8221;<\/em>, in Proceedings of 48th European Solid-State Device Research Conference (ESSDERC), pp.150 &#8212; 153, Dresden, Germany, October 2018<\/p>\n\n\n\n<h2 id=\"outline__11\" class=\"wp-block-heading\" id=\"outline__8\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color 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