{"id":848,"date":"2022-08-01T17:00:00","date_gmt":"2022-08-01T08:00:00","guid":{"rendered":"https:\/\/testhagisolcojp.gptw.net\/techblog\/?p=848"},"modified":"2024-07-17T07:46:36","modified_gmt":"2024-07-16T22:46:36","slug":"post-848","status":"publish","type":"post","link":"https:\/\/testhagisolcojp.gptw.net\/techblog\/?p=848","title":{"rendered":"SSD\u306e\u9078\u3073\u304b\u305f(3\/5)\uff1a\u5bff\u547d\u3092\u7e2e\u3081\u308b\u4f7f\u3044\u304b\u305f1"},"content":{"rendered":"\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/testhagisolcojp.gptw.net\/form\/contact.php\"><strong>\u304a\u554f\u3044\u5408\u308f\u305b\u306f\u3053\u3061\u3089<\/strong><\/a><\/div>\n<\/div>\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\/2022\/05\/AdobeStock_227086649-1024x683.jpeg\" alt=\"\" class=\"wp-image-853\"\/><\/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<\/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\/094533052380e9d3f96c\" target=\"_blank\">2019\u5e7411\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>\u3000<a href=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/?p=534\" target=\"_blank\" rel=\"noreferrer noopener\">\u524d\u56de\u306e\u8a18\u4e8b<\/a>\u3067\u3001\u300cTBW\u306e\u5927\u5c0f\u3092\u5de6\u53f3\u3059\u308b\u8981\u56e0\u306fTBW\u4ee5\u5916\u306bSSD\u304c\u642d\u8f09\u3059\u308bNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u5bff\u547d\u3092\u6d88\u8cbb\u3059\u308b\u8981\u7d20\u306e\u5927\u304d\u3055\u3067\u3042\u308b\u300d\u3068\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3000\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u300cTBW\u4ee5\u5916\u306bSSD\u304c\u642d\u8f09\u3059\u308bNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u5bff\u547d\u3092\u6d88\u8cbb\u3059\u308b\u8981\u7d20\u300d\u304c\u5927\u304d\u304f\u306a\u308b\u3068\u3001\u7d50\u679c\u3068\u3057\u3066TBW\u304c\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4e0a\u8a18\u8981\u7d20\u306e\u5927\u5c0f\u306f\u88fd\u54c1\u306e\u7279\u6027\u306b\u5927\u304d\u304f\u4f9d\u5b58\u3059\u308b\u305f\u3081\u4e00\u6982\u306b\u300c\u5927\u304d\u3044\uff1d\u60aa\u3044\u300d\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002\u305f\u3060\u3001\u4f7f\u3044\u304b\u305f\u3092\u5de5\u592b\u3059\u308b\u3053\u3068\u3067\u904e\u5ea6\u306a\u5897\u5927\u306e\u9632\u6b62\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305d\u3053\u3067\u3001\u4eca\u56de\u304b\u30892\u56de\u306e\u8a18\u4e8b\u3067\u300cSSD\u306e\u5bff\u547d\u3092\u7e2e\u3081\u308b\uff08\uff1dTBW\u304c\u76ee\u6e1b\u308a\u3059\u308b\uff09\u4f7f\u3044\u304b\u305f\u300d\u3092\u8aac\u660e\u3057\u307e\u3059\u3002\u4eca\u56de\u306f\u7b2c1\u56de\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u8a18\u4e8b\u306b\u8a18\u8f09\u3057\u305f\u4f7f\u3044\u304b\u305f\u3092\u907f\u3051\u308b\u3053\u3068\u3067\u3001TBW\u3092\u6700\u5927\u5316\u3057\u3001SSD\u306e\u5bff\u547d\u3092\u6700\u5927\u9650\u6d3b\u7528\u3067\u304d\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>\u5bb9\u91cf\u306b\u4f59\u88d5\u306a\u304f\u4f7f\u3046\u306e\u306f\u00d7<\/li>\n\n\n\n<li>\u5e83\u3044LBA\u7a7a\u9593\u306b\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u3059\u308b\u306e\u306f\u00d7<\/li>\n\n\n\n<li>\u540c\u3058\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u51fa\u3057\u7d9a\u3051\u308b\u306e\u3082\u00d7<\/li>\n<\/ul>\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading\"><a href=\"https:\/\/qiita.com\/ken-yossy\/items\/094533052380e9d3f96c#%E5%AE%B9%E9%87%8F%E3%81%84%E3%81%A3%E3%81%B1%E3%81%84%E3%81%84%E3%81%A3%E3%81%B1%E3%81%84%E3%81%A7%E4%BD%BF%E3%81%86%E3%81%AE%E3%81%AF%E5%AF%BF%E5%91%BD%E7%9A%84%E3%81%AB%E3%82%82%E6%80%A7%E8%83%BD%E7%9A%84%E3%81%AB%E3%82%82%E3%83%80%E3%83%A1\"><\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u5bb9\u91cf\u306b\u4f59\u88d5\u304c\u306a\u3044\u306e\u306f\u30c0\u30e1\uff01<\/mark><\/h2>\n\n\n\n<p><strong>\uff1c\u30dd\u30a4\u30f3\u30c8\uff1a\u5bb9\u91cf\u306b\u5341\u5206\u306a\u4f59\u88d5\u304c\u3042\u308b\u72b6\u614b\u3067\u4f7f\u3048\u3070SSD\u306b\u3084\u3055\u3057\u304f\u6027\u80fd\u3082\u5b89\u5b9a\u3059\u308b\uff1e<\/strong><\/p>\n\n\n\n<p>\u3000NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306f\u3001\u30d6\u30ed\u30c3\u30af\u5358\u4f4d\u3067\u6d88\u53bb\u3057\u306a\u3044\u3068\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u3053\u3081\u307e\u305b\u3093\u3002\u305d\u3053\u3067SSD\u306f\u3001\u66f8\u304d\u3053\u307f\u53ef\u80fd\u306a\u30d6\u30ed\u30c3\u30af\u304c\u306a\u304f\u306a\u308b\u524d\u306b\u30d6\u30ed\u30c3\u30af\u3092\u518d\u5229\u7528\u3057\u3066\u66f8\u304d\u3053\u307f\u53ef\u80fd\u306a\u30d6\u30ed\u30c3\u30af\u3092\u4f5c\u308a\u51fa\u3057\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u3068\u3057\u3066\u306e\u6a5f\u80fd\u3092\u7dad\u6301\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3042\u308b\u30d6\u30ed\u30c3\u30af\u306e\u518d\u5229\u7528\u3092\u76ee\u7684\u3068\u3057\u3066\u3001\u305d\u306e\u30d6\u30ed\u30c3\u30af\u306e\u6709\u52b9\u306a\u30c7\u30fc\u30bf\u3068\u7121\u52b9\u306a\u30c7\u30fc\u30bf\u3092\u9078\u308a\u5206\u3051\u3066\u6709\u52b9\u306a\u30c7\u30fc\u30bf\u306e\u307f\u5225\u306e\u30d6\u30ed\u30c3\u30af\u306b\u30b3\u30d4\u30fc\u3059\u308b\u51e6\u7406\u3001\u3053\u308c\u304c<a rel=\"noreferrer noopener\" href=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/?p=373\" target=\"_blank\">Garbage Collection (GC)<\/a>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3042\u308b\u4eee\u5b9a\u306e\u4e0b\u3067\u306f\u3001\u6709\u52b9\u30c7\u30fc\u30bf\u91cf\u304cSSD\u5bb9\u91cf\u306e50%\u3067\u3042\u308b\u5834\u5408\u306880%\u3067\u3042\u308b\u5834\u5408\u3092\u6bd4\u8f03\u3059\u308b\u3068\u5f8c\u8005\u306e\u307b\u3046\u304cGC\u6642\u306b3.2\u500d\u3082\u5bff\u547d\u3092\u6d88\u8cbb\u3059\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\uff08\u8a73\u7d30\u306f<a rel=\"noreferrer noopener\" href=\"https:\/\/qiita.com\/ken-yossy\/items\/094533052380e9d3f96c\" target=\"_blank\">Qiita\u306e\u8a18\u4e8b<\/a>\u53c2\u7167\uff09\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u3053\u3068\u304b\u3089\u3001<strong>SSD\u306f\u5bb9\u91cf\u306b\u4f59\u88d5\u3092\u6301\u3061\u4f7f\u3046\u3079\u304d<\/strong>\u3067\u3059\u3002\u305d\u3057\u3066\u3001<strong>\u6700\u3082\u7c21\u5358\u306b\u5bb9\u91cf\u306e\u4f59\u88d5\u3092\u4f5c\u308b\u65b9\u6cd5\u306f\u3067\u304d\u308b\u3060\u3051\u5bb9\u91cf\u304c\u5927\u304d\u3044\u3082\u306e\u3092\u9078\u5b9a\u3059\u308b\u3053\u3068<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4f8b\u3048\u3070\u3001\u683c\u7d0d\u898b\u8fbc\u307f\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u304c100 GB\u7a0b\u5ea6\u306e\u5834\u5408\u3067\u3082\u3001\u5bb9\u91cf128 GB\u306eSSD\u3067\u306f\u306a\u304f256 GB\u306eSSD\u3092\u9078\u629e\u3057\u305f\u307b\u3046\u304c\u306f\u308b\u304b\u306bSSD\u3092\u3084\u3055\u3057\u304f\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__6\" class=\"wp-block-heading\"><a href=\"https:\/\/qiita.com\/ken-yossy\/items\/094533052380e9d3f96c#%E5%BA%83%E3%81%84lba%E7%A9%BA%E9%96%93%E3%81%AB%E3%83%A9%E3%83%B3%E3%83%80%E3%83%A0%E3%83%A9%E3%82%A4%E3%83%88%E3%81%97%E7%B6%9A%E3%81%91%E3%82%8B%E3%81%AE%E3%81%AF%E3%83%80%E3%83%A1\"><\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u5e83\u3044LBA\u7a7a\u9593\u306b\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u3059\u308b\u306e\u306f\u30c0\u30e1\uff01<\/mark><\/h2>\n\n\n\n<p><strong>\uff1c\u30dd\u30a4\u30f3\u30c8\uff1aHDD\u3068\u6bd4\u3079\u308b\u3068\u306f\u308b\u304b\u306b\u6027\u80fd\u306f\u9ad8\u3044\u304c\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u306f\u82e6\u624b\uff1e<\/strong><\/p>\n\n\n\n<p>\u3000\u300c\u30d7\u30c1\u30d5\u30ea\u300d\u3068\u547c\u3070\u308c\u305f\u6027\u80fd\u4f4e\u4e0b\u304c\u78ba\u8a8d\u3055\u308c\u3066\u3044\u305f\u9803\u3068\u6bd4\u8f03\u3057\u3066\u3001SSD\u306e\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u6027\u80fd\u3001\u7279\u306b\u30b5\u30a4\u30ba\u304c\u5c0f\u3055\u3044\uff08\u4f8b\uff1a4 KB\uff09\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u306e\u6027\u80fd\u306f\u3068\u3066\u3082\u9ad8\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u8981\u56e0\u306e\u3072\u3068\u3064\u306f\u3001\u30db\u30b9\u30c8\u304c\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u66f8\u304d\u3067\u6307\u5b9a\u3059\u308b\u30a2\u30c9\u30ec\u30b9(Logical Block Address: LBA)\u3068\u305d\u306eLBA\u306e\u6700\u65b0\u30c7\u30fc\u30bf\u304c\u8a18\u9332\u3055\u308c\u305fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u4e0a\u306e\u4f4d\u7f6e\u306e\u5bfe\u5fdc\u3092\u7ba1\u7406\u3059\u308b\u65b9\u5f0f\u306e\u9055\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u5f53\u793e\u88fdSSD\u3092\u542b\u3081\u3001\u8fd1\u5e74\u306eSSD\u306e\u591a\u304f\u304c\u63a1\u7528\u3059\u308b\u7ba1\u7406\u65b9\u6cd5\u306f\u300c\u30da\u30fc\u30b8\u30de\u30c3\u30d4\u30f3\u30b0\u300d\u3084\u300c\u30da\u30fc\u30b8\u30ec\u30d9\u30eb\u30de\u30c3\u30d4\u30f3\u30b0\u300d\u3068\u547c\u3070\u308c\u308b\u65b9\u5f0f\u3067\u3059<sup>[1][2][3]<\/sup>\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u30da\u30fc\u30b8\u30de\u30c3\u30d4\u30f3\u30b0\u65b9\u5f0f\u306e\u5c0e\u5165\u306b\u3088\u3063\u3066\u3001\u5c0f\u30b5\u30a4\u30ba\u306e\u66f8\u304d\u8fbc\u307f\u3092\u52b9\u7387\u826f\u304fNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u8a18\u9332\u3057\u3066\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u7279\u306b\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u6027\u80fd\u304c\u5411\u4e0a\u3057\u307e\u3057\u305f\u3002\u52a0\u3048\u3066\u3001\u3053\u306e\u65b9\u5f0f\u306fOS\u306e\u3001\u7279\u306bWindows\u306e\u30a2\u30af\u30bb\u30b9\u30d1\u30bf\u30fc\u30f3<sup>[4]<\/sup>\u3068\u76f8\u6027\u304c\u826f\u304f\u3001\u5b9f\u4f7f\u7528\u74b0\u5883\u3067\u306e\u6027\u80fd\u3082\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3000\u306a\u304a\u4ee5\u524d\u306e\u7ba1\u7406\u65b9\u5f0f\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u30d6\u30ed\u30c3\u30af\uff08\u30b5\u30a4\u30ba\uff09\u5358\u4f4d\u3067\u7ba1\u7406\u3059\u308b\u3053\u3068\u304b\u3089\u300c\u30d6\u30ed\u30c3\u30af\u30de\u30c3\u30d4\u30f3\u30b0\u300d\u3084\u300c\u30d6\u30ed\u30c3\u30af\u30ec\u30d9\u30eb\u30de\u30c3\u30d4\u30f3\u30b0\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e2\u3064\u306e\u7ba1\u7406\u65b9\u5f0f\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u300c\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u30de\u30c3\u30d4\u30f3\u30b0\u300d\u306a\u3069\u3068\u547c\u3070\u308c\u308b\u65b9\u5f0f\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3057\u304b\u3057\u3001\u30da\u30fc\u30b8\u30de\u30c3\u30d4\u30f3\u30b0\u65b9\u5f0f\u3092\u7528\u3044\u3066\u3082\u3001LBA\u7a7a\u9593\u306e\u5e83\u3044\u7bc4\u56f2\u306b\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u3092\u3055\u308c\u308b\u3068GC\u306e\u52b9\u7387\u304c\u60aa\u304f\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u305d\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3067\u306f\u3001\u30da\u30fc\u30b8\u30de\u30c3\u30d4\u30f3\u30b0\u65b9\u5f0f\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u3067\u3042\u308b\u7ba1\u7406\u60c5\u5831\u306e\u80a5\u5927\u5316\u304c\u5bff\u547d\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000GC\u306e\u52b9\u7387\u60aa\u5316\u306fGC\u3067\u306e\u30b3\u30d4\u30fc\u30b5\u30a4\u30ba\u5897\u52a0\u3064\u307e\u308a\u5bff\u547d\u6d88\u8cbb\u91cf\u306e\u5897\u52a0\u3092\u610f\u5473\u3057\u307e\u3059\u306e\u3067\u3001\u7d50\u679c\u3068\u3057\u3066TBW\u306e\u76ee\u6e1b\u308a\u91cf\u304c\u591a\u304f\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001<strong>LBA\u7a7a\u9593\u306e\u5e83\u7bc4\u56f2\u306b\u308f\u305f\u308b\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\uff08\u7279\u306b<strong>\u5c0f\u30b5\u30a4\u30ba<\/strong>\uff09\u306fSSD\u306b\u3084\u3055\u3057\u304f\u306a\u3044\u4f7f\u3044\u304b\u305f<\/strong>\u3001\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4e00\u65b9\u3001\u30b7\u30fc\u30b1\u30f3\u30b7\u30e3\u30eb\u30e9\u30a4\u30c8\u3067\u3042\u308c\u3070\u3001GC\u306e\u5fc5\u8981\u304c\u307b\u3068\u3093\u3069\u306a\u3044\u304b\u6bd4\u8f03\u7684\u52b9\u7387\u826f\u304fGC\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u306e\u3067\u3001\u7d50\u679c\u7684\u306bTBW\u306e\u76ee\u6e1b\u308a\u91cf\u3092\u5c11\u306a\u304f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u300cSSD\u306e\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u6027\u80fd\u304c\u9ad8\u3044\u3053\u3068\u3068\u3001SSD\u306b\u3068\u3063\u3066\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u304c\u5f97\u610f\u304b\u3069\u3046\u304b\u3001\u307e\u305f\u30e9\u30f3\u30c0\u30e0\u30e9\u30a4\u30c8\u304c\u3084\u3055\u3057\u3044\u4f7f\u3044\u304b\u305f\u304b\u3069\u3046\u304b\u306f\u3001\u5225\u306e\u8a71\u3067\u3042\u308b\u300d\u3053\u3068\u306b\u7559\u610f\u3059\u308b\u3068\u3001\u3088\u308aSSD\u3092\u3084\u3055\u3057\u304f\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__7\" class=\"wp-block-heading\"><a href=\"https:\/\/qiita.com\/ken-yossy\/items\/094533052380e9d3f96c#%E5%90%8C%E3%81%98%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92read%E3%81%97%E7%B6%9A%E3%81%91%E3%82%8B%E3%81%AE%E3%82%82%E3%83%80%E3%83%A1\"><\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">\u540c\u3058\u30c7\u30fc\u30bf\u3092Read\u3057\u7d9a\u3051\u308b\u306e\u3082\u30c0\u30e1\uff01<\/mark><\/h2>\n\n\n\n<p><strong>\uff1c\u30dd\u30a4\u30f3\u30c8\uff1a\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u3092\u983b\u7e41\u306b\u8aad\u307f\u3060\u3059\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306f\u8981\u6ce8\u610f\uff1e<\/strong><\/p>\n\n\n\n<p>\u3000NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306b\u306f<a href=\"https:\/\/testhagisolcojp.gptw.net\/techblog\/?p=877\" target=\"_blank\" rel=\"noreferrer noopener\">\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6(Read Disturb)<\/a>\u3068\u3044\u3046\u7279\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u7279\u6027\u306b\u3088\u308b\u30a8\u30e9\u30fc\u6570\u306e\u5897\u52a0\u306b\u306f\u3001\u4f8b\u3048\u3070\u8aad\u307f\u3060\u3057\u56de\u6570\u3092\u8a18\u9332\u3057\u3066\u95be\u5024\u8d85\u904e\u3092\u691c\u51fa\u3057\u305f\u6642\u306b\u5f53\u8a72\u30c7\u30fc\u30bf\u3092\u5225\u306e\u5834\u6240\u306b\u30b3\u30d4\u30fc\u3059\u308b\u3001\u306a\u3069\u306e\u5bfe\u5fdc\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002\u5f53\u793e\u88fdSSD\u306b\u306f\u3001\u3053\u306e\u30ea\u30fc\u30c9\u30c7\u30a3\u30b9\u30bf\u30fc\u30d6\u5bfe\u7b56\u3068\u3057\u3066<a rel=\"noreferrer noopener\" href=\"https:\/\/testhagisolcojp.gptw.net\/technology\/#refresh\" target=\"_blank\">\u30ea\u30d5\u30ec\u30c3\u30b7\u30e5<\/a>\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u305f\u3060\u3001\u3053\u306e\u51e6\u7406\u3082\u30c7\u30fc\u30bf\u30b3\u30d4\u30fc\u3064\u307e\u308aNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u66f8\u304d\u8fbc\u307f\u304c\u767a\u751f\u3059\u308b\u305f\u3081\u3001\u5bff\u547d\u306e\u6d88\u8cbb\u3092\u5897\u3084\u3057TBW\u3092\u6e1b\u3089\u3059\u539f\u56e0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3064\u307e\u308a\u3001<strong>SSD\u306e\u540c\u4e00\u30c7\u30fc\u30bf\u3092\u77ed\u671f\u9593\u306b\u591a\u6570\u56de\u8aad\u307f\u51fa\u3059\u4f7f\u3044\u65b9\u306fNAND\u306b\u3084\u3055\u3057\u304f\u306a\u3044<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u3053\u306e\u7279\u6027\u304c\u554f\u984c\u3068\u306a\u308b\u8aad\u307f\u51fa\u3057\u306e\u983b\u5ea6\u3084\u56de\u6570\u306f\u3001NAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u7279\u6027\u3084SSD\u306e\u7ba1\u7406\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u5f53\u793e\u88fdSSD\u3067\u306f\u3001\u4f7f\u7528\u3059\u308bNAND\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u306e\u7279\u6027\u3092\u793e\u5185\u5b9f\u9a13\u3067\u78ba\u8a8d\u3057\u3001\u4e0a\u8a18\u30ea\u30d5\u30ec\u30c3\u30b7\u30e5\u3092\u5b9f\u65bd\u3059\u308b\u8aad\u307f\u51fa\u3057\u56de\u6570\u306a\u3069\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__8\" class=\"wp-block-heading\"><a href=\"https:\/\/qiita.com\/ken-yossy\/items\/094533052380e9d3f96c#%E3%81%8A%E3%82%8F%E3%82%8A%E3%81%AB\"><\/a><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\u306e\u5bff\u547d\u6d88\u8cbb\u306e\u8996\u70b9\u304b\u3089\u3001SSD\u306e\u300c\u3084\u3055\u3057\u304f\u306a\u3044\u4f7f\u3044\u304b\u305f\u300d\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3000SSD\u306e\u5bff\u547d\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u300c\u4f7f\u3044\u304b\u305f\u300d\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u304c\u3001\u4eca\u5f8cSSD\u3092\u9078\u3076\u969b\u306e\u3054\u53c2\u8003\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u6b21\u56de\u306e\u8a18\u4e8b\u3082\u5f15\u304d\u7d9a\u304d\u3001SSD\u306e\u300c\u3084\u3055\u3057\u304f\u306a\u3044\u4f7f\u3044\u304b\u305f\u300d\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"outline__9\" class=\"wp-block-heading\"><a href=\"https:\/\/qiita.com\/ken-yossy\/items\/094533052380e9d3f96c#reference\"><\/a><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] Kim, et al.,&nbsp;<em>&#8220;A Space-efficient Flash Translate Layer for Compactflash Systems&#8221;<\/em>, IEEE Transactions on Consumer Electronics, vol. 48, no. 2, pp. 336-375, May, 2002<br>[2] Hu, el al.,&nbsp;<em>&#8220;Achieving page-mapping FTL performance at block-mapping FTL cost by hiding address translation&#8221;<\/em>, in proceedings of IEEE 26th Symposium on Mass Storage Systems and Technologies (MSST), May, 2010<br>[3]&nbsp;<em>&#8220;<a rel=\"noreferrer noopener\" href=\"https:\/\/accelazh.github.io\/ssd\/A-Summary-On-SSD-And-FTL\" target=\"_blank\">A Summary on SSD &amp; FTL<\/a>&#8220;<\/em>\u30012022\u5e746\u670814\u65e5\u95b2\u89a7<br>[4] \u9ebb\u751f\u3001\u82b1\u623f\u3001\u300cSSD\u306e\u4ed5\u7d44\u307f\u3068\u7279\u5fb4\u300d\u3001Design Wave Magazine, no. 132, page 36, October, 2008<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p style=\"font-size:12px\">\u4ed6\u793e\u5546\u6a19\u306b\u3064\u3044\u3066<br>\u8a18\u4e8b\u4e2d\u306b\u306f\u767b\u9332\u5546\u6a19\u30de\u30fc\u30af\u3092\u660e\u8a18\u3057\u3066\u304a\u308a\u307e\u305b\u3093\u304c\u3001\u8a18\u4e8b\u306b\u63b2\u8f09\u3055\u308c\u3066\u3044\u308b\u4f1a\u793e\u540d\u304a\u3088\u3073\u88fd\u54c1\u540d\u7b49\u306f\u4e00\u822c\u306b\u5404\u793e\u306e\u5546\u6a19\u307e\u305f\u306f\u767b\u9332\u5546\u6a19\u3067\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p style=\"font-size:12px\">\u8a18\u4e8b\u5185\u5bb9\u306b\u3064\u3044\u3066<br>\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9\u306f\u3001\u767a\u8868\u5f53\u6642\u306e\u60c5\u5831\u3067\u3059\u3002\u4e88\u544a\u306a\u304f\u5909\u66f4\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3042\u3089\u304b\u3058\u3081\u3054\u4e86\u627f\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"outline__10\" class=\"wp-block-heading has-vivid-cyan-blue-color has-text-color\">\u304a\u554f\u3044\u5408\u308f\u305b<\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" 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