{"id":30380,"date":"2023-06-12T01:06:47","date_gmt":"2023-06-11T17:06:47","guid":{"rendered":"http:\/\/www.idc.net\/help\/?p=30380"},"modified":"2023-06-12T01:06:47","modified_gmt":"2023-06-11T17:06:47","slug":"raid%e7%a3%81%e7%9b%98%e9%98%b5%e5%88%97-2","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/30380\/","title":{"rendered":"RAID\u78c1\u76d8\u9635\u5217"},"content":{"rendered":"<p>*\u672c\u7ae0\u91cd\u70b9\uff1a\u4e86\u89e3\u5404RAID\u7ea7\u522b\u7684\u539f\u7406\u4f18\u7f3a\u70b9\u53ca\u5e38\u7528\u7ea7\u522b\u5b9e\u73b0\uff0c\u4f01\u4e1a\u4e2d\u5382\u5546\u5927\u591a\u63d0\u4f9b\u4e86\u786cRAID\u65b9\u6848\u3002<\/p>\n<h3 id=\"tid-AwWPB7\">1\u3001\u4ec0\u4e48\u662fRAID\uff1f<\/h3>\n<p>\"RAID\"\u4e00\u8bcd\u662f\u7531David Patterson, Garth A. Gibson, Randy Katz \u4e8e1987\u5e74\u5728\u52a0\u5dde\u5927\u5b66\u4f2f\u514b\u5229\u5206\u6821\u53d1\u660e\u7684\u3002\u57281988\u5e746\u6708SIGMOD\u4f1a\u8bae\u4e0a\u63d0\u4ea4\u7684\u8bba\u6587\"A Case for Redundant Arrays of Inexpensive Disks\u201d\"\u4e2d\u63d0\u51fa\uff0c\u5f53\u65f6\u6027\u80fd\u6700\u597d\u7684\u5927\u578b\u673a\u4e0d\u65ad\u589e\u957f\u7684\u4e2a\u4eba\u7535\u8111\u5e02\u573a\u5f00\u53d1\u7684\u4e00\u7cfb\u5217\u5ec9\u4ef7\u9a71\u52a8\u5668\u7684\u6027\u80fd\u6240\u51fb\u8d25\u3002\u5c3d\u7ba1\u6545\u969c\u4e0e\u9a71\u52a8\u5668\u6570\u91cf\u7684\u6bd4\u4f8b\u4f1a\u4e0a\u5347\uff0c\u4f46\u901a\u8fc7\u914d\u7f6e\u5197\u4f59\uff0c\u9635\u5217\u7684\u53ef\u9760\u6027\u53ef\u80fd\u8fdc\u8fdc\u8d85\u8fc7\u4efb\u4f55\u5927\u578b\u5355\u4e2a\u9a71\u52a8\u5668\u7684\u53ef\u9760\u6027<\/p>\n<p><strong>\u72ec\u7acb\u786c\u76d8\u5197\u4f59\u9635\u5217<\/strong>\uff08<strong>RAID<\/strong>, Redundant Array of Independent Disks\uff09\uff0c\u65e7\u79f0<strong>\u5ec9\u4ef7\u78c1\u76d8\u5197\u4f59\u9635\u5217<\/strong>\uff0c\u7b80\u79f0<strong>\u78c1\u76d8\u9635\u5217<\/strong>\u3002\u5229\u7528\u865a\u62df\u5316\u5b58\u50a8\u6280\u672f\u628a\u591a\u4e2a\u786c\u76d8\u7ec4\u5408\u8d77\u6765\uff0c\u6210\u4e3a\u4e00\u4e2a\u6216\u591a\u4e2a\u786c\u76d8\u9635\u5217\u7ec4\uff0c\u76ee\u7684\u4e3a\u63d0\u5347\u6027\u80fd\u6216\u6570\u636e\u5197\u4f59\uff0c\u6216\u662f\u4e24\u8005\u540c\u65f6\u63d0\u5347\u3002<\/p>\n<p>RAID \u5c42\u7ea7\u4e0d\u540c\uff0c\u6570\u636e\u4f1a\u4ee5\u591a\u79cd\u6a21\u5f0f\u5206\u6563\u4e8e\u5404\u4e2a\u786c\u76d8\uff0cRAID \u5c42\u7ea7\u7684\u547d\u540d\u4f1a\u4ee5 RAID \u5f00\u5934\u5e76\u5e26\u6570\u5b57\uff0c\u4f8b\u5982\uff1aRAID 0\u3001RAID 1\u3001RAID 5\u3001RAID 6\u3001RAID 7\u3001RAID 01\u3001RAID 10\u3001RAID 50\u3001RAID 60\u3002\u6bcf\u79cd\u7b49\u7ea7\u90fd\u6709\u5176\u7406\u8bba\u4e0a\u7684\u4f18\u7f3a\u70b9\uff0c\u4e0d\u540c\u7684\u7b49\u7ea7\u5728\u4e24\u4e2a\u76ee\u6807\u95f4\u83b7\u53d6\u5e73\u8861\uff0c\u5206\u522b\u662f\u589e\u52a0\u6570\u636e\u53ef\u9760\u6027\u4ee5\u53ca\u589e\u52a0\u5b58\u50a8\u5668\uff08\u7fa4\uff09\u8bfb\u5199\u6027\u80fd\u3002<\/p>\n<p>\u7b80\u5355\u6765\u8bf4\uff0cRAID\u628a\u591a\u4e2a\u786c\u76d8\u7ec4\u5408\u6210\u4e3a\u4e00\u4e2a\u903b\u8f91\u786c\u76d8\uff0c\u56e0\u6b64\uff0c\u64cd\u4f5c\u7cfb\u7edf\u53ea\u4f1a\u628a\u5b83\u5f53\u4f5c\u4e00\u4e2a\u5b9e\u4f53\u786c\u76d8\u3002RAID\u5e38\u88ab\u7528\u5728\u670d\u52a1\u5668\u7535\u8111\u4e0a\uff0c\u5e76\u4e14\u5e38\u4f7f\u7528\u5b8c\u5168\u76f8\u540c\u7684\u786c\u76d8\u4f5c\u4e3a\u7ec4\u5408\u3002\u7531\u4e8e\u786c\u76d8\u4ef7\u683c\u7684\u4e0d\u65ad\u4e0b\u964d\u4e0eRAID\u529f\u80fd\u66f4\u52a0\u6709\u6548\u5730\u4e0e\u4e3b\u677f\u96c6\u6210\uff0c\u5b83\u4e5f\u6210\u4e3a\u666e\u901a\u7528\u6237\u7684\u4e00\u4e2a\u9009\u62e9\uff0c\u7279\u522b\u662f\u9700\u8981\u5927\u5bb9\u91cf\u5b58\u50a8\u7a7a\u95f4\u7684\u5de5\u4f5c\uff0c\u5982\uff1a\u89c6\u9891\u4e0e\u97f3\u9891\u5236\u4f5c\u3002<\/p>\n<h3 id=\"tid-QBYPee\">2\u3001\u5b9e\u73b0\u65b9\u5f0f\uff1f<\/h3>\n<p>RAID\u529f\u80fd\uff1a<\/p>\n<ul>\n<li>\u63d0\u9ad8IO\u80fd\u529b\uff0c\u78c1\u76d8\u5e76\u884c\u8bfb\u5199<\/li>\n<li>\u63d0\u9ad8\u8010\u7528\u6027\uff0c\u78c1\u76d8\u5197\u4f59\u7b97\u6cd5\u6765\u5b9e\u73b0<\/li>\n<\/ul>\n<p>\u5b9e\u73b0\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\u786c\u4ef6RAID\u5361\uff1a\u4e00\u79cd\u662f\u5916\u63a5 \u786c\u76d8\u5361\u63d0\u4f9b\u9002\u914d\uff1b\u4e00\u79cd\u662f\u4e3b\u677f\u81ea\u5e26RAID\u63a7\u5236\u82af\u7247\uff0c\u70e7\u5f55\u5728BIOS\u91cc\u7684\u914d\u7f6e\u3002\u00a0<strong>\u4f01\u4e1a\u7ea7\u5b9e\u73b0\u65b9\u5f0f\uff01\uff01<\/strong><\/li>\n<li>\u8f6f\u4ef6RAID\uff1a\u901a\u8fc7OS\u5b9e\u73b0\uff0c\u6bd4\u5982\uff1a\u7fa4\u6656\u7684NAS\u00a0<strong>\u5bb6\u7528\u5b9e\u73b0\u65b9\u5f0f<\/strong><\/li>\n<\/ul>\n<p>\u786c\u4ef6RAID\u7f3a\u70b9\uff1a\u6839\u636e\u5404\u4e2a\u5382\u5546\u6709\u5173\uff0c\u914d\u7f6e\u65b9\u5f0f\u548c\u754c\u9762\u5dee\u522b\u5f88\u5927\u3002<\/p>\n<h3 id=\"tid-z8hi2j\">3\u3001RAID\u7ea7\u522b<\/h3>\n<p>\u7ea7\u522b\uff1a<strong>\u591a\u5757\u78c1\u76d8\u7ec4\u7ec7\u5728\u4e00\u8d77\u7684\u7684\u5de5\u4f5c\u65b9\u5f0f\u6709\u6240\u4e0d\u540c<\/strong>\u3002<\/p>\n<p>\u5e38\u89c1\u7684\u7c7b\u578b\u5982\u4e0b\uff1a<\/p>\n<p>RAID0:\u6761\u5e26\u5377\uff0cstrip<\/p>\n<p>RAID1:\u955c\u50cf\u5377\uff0cmirror<\/p>\n<p>...<\/p>\n<p>RAID5<\/p>\n<p>RAID6<\/p>\n<p>RAID10<\/p>\n<p>RAID50<\/p>\n<p>RAID01<\/p>\n<p>...<\/p>\n<h4 id=\"tid-eHn7xY\">3.1 RAID-0\uff1a\u6027\u80fd\u6700\u4f73<\/h4>\n<p>\u4ee5chunk\u5355\u4f4d\u8bfb\u5199\u6570\u636e\uff0c\u56e0\u4e3a\u8bfb\u5199\u65f6\u90fd\u53ef\u4ee5\u5e76\u884c\u5904\u7406\uff0c\u6240\u4ee5\u5728\u6240\u6709\u7684\u7ea7\u522b\u4e2d\uff0cRAID0\u7684\u901f\u5ea6\u662f\u6700\u5feb\u7684\uff0c\u4f46\u662fRAID0\u65e2\u6ca1\u6709\u5197\u4f59\u529f\u80fd\uff0c\u5047\u5982\u4e00\u4e2a\u786c\u76d8\u635f\u574f\uff0c<strong>\u6240\u6709\u662f\u6570\u636e\u90fd\u4f1a\u4e22\u5931<\/strong>\u3002<\/p>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080124038.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30382\" title=\"RAID\u78c1\u76d8\u9635\u5217-1\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080124038.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-1\" width=\"584\" height=\"624\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080124038.png 584w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080124038-281x300.png 281w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><\/p>\n<p>\u8981\u6c42\uff1a\u591a\u5757\u7269\u7406\u76d8\uff08\u81f3\u5c11\u4e24\u5757\uff09\u786c\u76d8\u901a\u8fc7\u8f6f\u4ef6\u6216\u8005\u786c\u4ef6\u65b9\u5f0f\u4e32\u8054\u5728\u4e00\u8d77\u7ec4\u6210\u4e00\u4e2a\u96c6\u5408\u5377\u7ec4\uff0c\u5e76\u5c06\u6570\u636e\u4f9d\u6b21\u5199\u5165\u5230\u5404\u4e2a\u7269\u7406\u786c\u76d8\u4e2d\u3002\u5927\u5c0f\u76f8\u540c\uff0c\u7ec4\u5408\u540e\u7cfb\u7edf\u53ea\u80fd\u8bc6\u522b\u7ec4\u5408\u540e\u7684\u4e00\u4e2a\u903b\u8f91\u76d8\uff0c\u7a7a\u95f4\u53d8\u5927\uff08\u4e24\u4e2a\u76d8\u4e4b\u548c\uff09\uff0c\u5982\u4e0a\u56fe\uff0c\u6570\u636e\u5199\u5165\u4e0d\u540c\u7684\u786c\u76d8\u8bbe\u5907\u4e2d\uff0c\u5373disk0\uff0cdisk1\u5206\u522b\u4fdd\u5b58\u6570\u636e\uff0c\u6700\u7ec8\u5b9e\u73b0\u63d0\u5347\u8bfb\u53d6\u3001\u5199\u5165\u901f\u5ea6\u7684\u6548\u679c\u3002<\/p>\n<p><mark>\u901a\u4fd7\u6765\u8bf4\uff1aRIAD0\u6280\u672f\u80fd\u591f\u6709\u6548\u63d0\u5347\u786c\u76d8\u6570\u636eIO\u901f\u5ea6\uff0c\u4f46\u662f\u4e0d\u5177\u5907\u6570\u636e\u5197\u4f59\u548c\u7ea0\u9519\u80fd\u529b\u3002<\/mark><\/p>\n<p>\u5b9e\u73b0\uff1a\u5047\u5982\u4e00\u4e2a\u6587\u4ef6\u67091G\uff0c\u4f1a\u5206\u6210\u82e5\u5e72\u4e2achunk\uff08\u5355\u4f4d\uff09\u53ef\u4ee5\u7406\u89e3\u4e3a\u5b58\u653e\u6570\u636e\u7684\u6570\u636e\u5757\uff0c\u5047\u8bbe\u662f64K\uff0c\u5982\u679c\u5b58\u653e\uff1fA1 B2 A3 B4 A5...<\/p>\n<p>A\u4ee3\u8868\u786c\u76d81\uff0cB\u4ee3\u8868\u786c\u76d82 \uff0c\u6309\u987a\u5e8f\u5b58\u653e\uff0c \u4e24\u5757\u53ef\u4ee5\u540c\u65f6\u5199\u516550%\u6570\u636e\uff0c\u7406\u8bba\u4e0a\u6027\u80fd\u63d0\u5347\u4e8650%\uff0c\u6240\u4ee5\u786c\u76d8\u8d8a\u591a\uff0c\u540c\u65f6\u8bfb\u5199\u7684\u901f\u5ea6\u8f83\u5feb\u3002<strong>\u81f4\u547d\u7f3a\u70b9\u5c31\u662f\u4e00\u5757\u635f\u574f\uff0c\u5168\u90e8\u6570\u636e\u4e22\u5931\u3002<\/strong><\/p>\n<p>\u4f01\u4e1a\u4e2d\u5f88\u5c11\u7528\uff0c\u6ca1\u6709\u5bb9\u9519\u5197\u4f59\u6027\uff01\uff01\uff01<\/p>\n<h4 id=\"tid-5Jrk2M\">3.2 RAID-1\uff1a\u5b8c\u6574\u5907\u4efd<\/h4>\n<p>\u7b80\u79f0\uff1a\u955c\u50cf\u5377\uff08\u540c\u6b65\uff09\u3002\u9488\u5bf9RAID0\u7684\u7f3a\u9677\uff0cRAID1\u53ef\u4ee5\u89e3\u51b3\u3002<\/p>\n<p>\u539f\u7406\uff1a\u4e24\u7ec4\u4ee5\u4e0a\u7684N\u4e2a\u78c1\u76d8\u76f8\u4e92\u505a\u955c\u50cf\uff0c\u5728\u4e00\u4e9b\u591a\u7ebf\u7a0b\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u6709\u5f88\u597d\u7684\u8bfb\u53d6\u901f\u5ea6\uff0c\u7406\u8bba\u4e0a\u8bfb\u53d6\u901f\u5ea6\u7b49\u4e8e\u786c\u76d8\u6570\u91cf\u7684\u500d\u6570\uff0c\u4e0eRAID0\u76f8\u540c\u3002\u53e6\u5916\u5199\u5165\u901f\u5ea6\u6709\u5fae\u5c0f\u964d\u4f4e\u3002<\/p>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080124319.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30383\" title=\"RAID\u78c1\u76d8\u9635\u5217-2\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080124319.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-2\" width=\"418\" height=\"622\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080124319.png 418w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080124319-202x300.png 202w\" sizes=\"auto, (max-width: 418px) 100vw, 418px\" \/><\/a><\/p>\n<p>\u8bfb\u6027\u80fd\u63d0\u5347\u3001\u5199\u6027\u80fd\u7565\u6709\u4e0b\u964d<\/p>\n<p>\u53ef\u7528\u7a7a\u95f4\uff1a1*min(S1,S2,...)<\/p>\n<p>\u78c1\u76d8\u5229\u7528\u7387 50%<\/p>\n<p>\u6709\u5197\u4f59\u80fd\u529b<\/p>\n<p>\u6700\u5c11\u78c1\u76d8\u6570\uff1a2+<\/p>\n<p>\u7b80\u5355\u6765\u8bf4\uff1aRAID1\u6280\u672f\u6ce8\u91cd\u5b89\u5168\u6027\uff0c\u662f\u56e0\u4e3a\u5728\u591a\u5757\u786c\u76d8\u8bbe\u5907\u4e2d\u5199\u5165\u4e86\u76f8\u540c\u7684\u6570\u636e\uff0c\u56e0\u6b64\u786c\u76d8\u8bbe\u5907\u7684\u5229\u7528\u7387\u5c31\u5f97\u4ee5\u4e0b\u964d\u3002\u4ece\u7406\u8bba\u4e0a\u6765\u8bf4\uff0c2\u5757\u786c\u76d8\u7684\u5229\u7528\u7387\u5c31\u662f50%\uff0c3\u5757\u786c\u76d8\u7684\u53ef\u7528\u7387\u5c31\u662f33%\uff0c\u4ee5\u6b64\u7c7b\u63a8\uff0c\u65e0\u7591\u662f\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u589e\u5927\u4e86\u7cfb\u7edf\u8ba1\u7b97\u7684\u8d1f\u8f7d\u3002<\/p>\n<p><strong>\u4ee3\u4ef7:\u7a7a\u95f4\u6362\u5197\u4f59\u3002<\/strong><\/p>\n<h4 id=\"tid-R82HGG\">3.3 RAID1+0\uff0cRAID0+1<\/h4>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080122961.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30384\" title=\"RAID\u78c1\u76d8\u9635\u5217-3\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080122961.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-3\" width=\"826\" height=\"654\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080122961.png 826w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080122961-300x238.png 300w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080122961-768x608.png 768w\" sizes=\"auto, (max-width: 826px) 100vw, 826px\" \/><\/a><\/p>\n<p>RAID1+0\uff0c\u5373RAID1\u548cRAID0\u7684\u7ec4\u5408\uff0c\u5148\u628a\u4e24\u7ec4\u786c\u76d8\u5206\u522b\u4f5c\u4e3aRAID1\uff0c\u7136\u540e\u628a\u7ec4\u5408\u597d\u7684\u4e24\u7ec4RAID1\u7ec4\u5408\u6210RAID0\u3002<\/p>\n<p>\u8bfb\u3001\u5199\u6027\u80fd\u63d0\u5347\u3002<\/p>\n<p>\u53ef\u7528\u7a7a\u95f4\uff1aN\/2<\/p>\n<p>\u6709\u5bb9\u9519\u80fd\u529b\uff1a<strong>\u6bcf\u7ec4\u955c\u50cf\u6700\u591a\u53ea\u80fd\u574f\u4e00\u5757\u3002<\/strong><\/p>\n<p>\u6700\u5c11\u78c1\u76d8\u6570\uff1a4\uff0c4+<\/p>\n<p>\u8fd9\u4e5f\u662f\u76ee\u524d\u5b58\u50a8\u5382\u5546\u6700\u63a8\u8350\u7684\u65b9\u6cd5\u3002<\/p>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080124354.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30385\" title=\"RAID\u78c1\u76d8\u9635\u5217-4\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080124354.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-4\" width=\"1016\" height=\"732\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080124354.png 1016w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080124354-300x216.png 300w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080124354-768x553.png 768w\" sizes=\"auto, (max-width: 1016px) 100vw, 1016px\" \/><\/a><\/p>\n<p>RAID0+1\uff0c\u987e\u540d\u601d\u4e49\u5c31\u662f\u5148\u628a\u4e24\u7ec4\u786c\u76d8\u7ec4\u5408\u6210RAID0\u4e4b\u540e\uff0c\u518d\u628a\u4e24\u7ec4RAID0\u7ec4\u5408\u6210RAID1.<\/p>\n<p>\u540c\u65f6\u542b\u67091\u548c0\u7684\u7279\u6027\u3002<\/p>\n<p>\u8bfb\u5199\u63d0\u5347\uff0c\u540c\u4e00\u65f6\u523b\uff0c\u53ea\u80fd\u574f\u4e00\u7ec4RAID0\u786c\u76d8\uff082\u5757\uff09\uff0c\u7ec41\u548c\u7ec42\u4e0d\u80fd\u540c\u65f6\u574f\u5176\u4e2d\u4e00\u4e2a\uff0c\u5426\u5219\u5168\u90e8\u4e22\u5931\u3002<\/p>\n<p>\u65e0\u6821\u9a8c\uff0c\u65e0\u5bb9\u9519\u3002<\/p>\n<h4 id=\"tid-NQbTyf\">3.4 RAID4\uff08\u4e0d\u5e38\u7528\uff09<\/h4>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080121415.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30381\" title=\"RAID\u78c1\u76d8\u9635\u5217-5\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080121415.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-5\" width=\"450\" height=\"308\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080121415.png 450w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080121415-300x205.png 300w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>\u5229\u7528\u7387\u597d\uff0c\u6709\u5197\u4f59\u80fd\u529b\uff0c\u81f3\u5c113\u5757\u786c\u76d8\u624d\u80fd\u5b9e\u73b0\u3002<\/p>\n<p>\u591a\u5757\u6570\u636e\u76d8\u5f02\u6216\u8fd0\u7b97\u503c\u5b58\u4e8e\u4e13\u7528\u6821\u9a8c\u76d8\u3002\u6700\u540e\u4e00\u5757\u786c\u76d8\u5b58\u653e\u5176\u4ed6\u51e0\u5757\u786c\u76d8\u7684\u6821\u9a8c\u4f4d\u3002<\/p>\n<p>4\u5757\u786c\u76d8\u7684\u53ef\u7528\u7387\uff0c\u5c31\u662f75%\uff0c\u6700\u540e\u4e00\u5757\u505a\u6821\u9a8c\u76d8\u3002<\/p>\n<p>N-1\/N &lt;==\u5229\u7528\u7387<\/p>\n<p>\u53ea\u80fd\u574f\u4e00\u5757\u786c\u76d8\uff0c\u4f01\u4e1a\u4e0d\u5e38\u7528\uff0c\u6821\u9a8c\u76d8\u5e38\u574f\u3002<\/p>\n<h4 id=\"tid-2D3Zaz\">3.5 RAID5\uff1a\u6027\u80fd\u4e0e\u6570\u636e\u5907\u4efd\u7684\u5747\u8861\u8003\u8651<\/h4>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080124454.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30386\" title=\"RAID\u78c1\u76d8\u9635\u5217-6\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080124454.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-6\" width=\"688\" height=\"464\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080124454.png 688w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080124454-300x202.png 300w\" sizes=\"auto, (max-width: 688px) 100vw, 688px\" \/><\/a><\/p>\n<p>\u6539\u8fdb\u7248\u7684RAID4\uff0c\u8ba1\u7b97\u7684\u6821\u9a8c\u4f4d\u5b58\u653e\u5728\u4e0d\u540c\u7684\u76d8\u4e0a\uff0c\u574f\u7684\u51e0\u7387\u4e00\u6837\u3002<\/p>\n<p>\u8bfb\u5199\u6548\u7387\u63d0\u5347\u4e86\uff0c\u53ef\u7528\u7a7a\u95f4\u4e5f\u662fN-1\/N\uff0c\u6709\u5bb9\u9519\u80fd\u529b\uff0c<strong>\u5141\u8bb8\u6700\u591a\u4e00\u5757\u786c\u76d8\u635f\u574f<\/strong>\u3002<\/p>\n<p>\u6700\u5c11\u78c1\u76d8\u6570\uff1a&gt;=3<\/p>\n<p>\u517c\u987e\uff0c\u6210\u672c\u3001\u5b89\u5168\u6027\u3001\u8bfb\u5199\u4e09\u5927\u6307\u6807\u3002<\/p>\n<p>RAID5\u7684\u8bfb\u5199\u6027\u80fd\u8ddfRAID0\u6709\u5f97\u6bd4\uff0c\u4e0d\u8fc7\u5199\u7684\u6027\u80fd\u5c31\u4e0d\u89c1\u5f97\u80fd\u591f\u589e\u52a0\uff0c\u539f\u56e0\u4e3a\u591a\u4e86\u4e00\u6761CRC\u8ba1\u7b97\uff0c\u4f1a\u5360\u7528CPU\u8d44\u6e90\uff0c\u56e0\u6b64\u6027\u80fd\u65b9\u9762\u8fd8\u9700\u8bc4\u4f30\u3002<\/p>\n<h4 id=\"tid-aF7eBi\">3.6 RAID6:Raid5\u7684\u8865\u5145\u7ea7\u522b\uff0c\u4e24\u5757\u5947\u5076\u6821\u9a8c\u76d8<\/h4>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080130136.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30387\" title=\"RAID\u78c1\u76d8\u9635\u5217-7\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080130136.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-7\" width=\"688\" height=\"448\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080130136.png 688w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080130136-300x195.png 300w\" sizes=\"auto, (max-width: 688px) 100vw, 688px\" \/><\/a><\/p>\n<p>\u53cc\u4efd\u6821\u9a8c\u4f4d,\u7b97\u6cd5\u66f4\u590d\u6742<\/p>\n<p>\u8bfb\u3001\u5199\u6027\u80fd\u63d0\u5347<\/p>\n<p>\u53ef\u7528\u7a7a\u95f4\uff1a(N-2)*min(S1,S2,...)<\/p>\n<p>\u6709\u5bb9\u9519\u80fd\u529b\uff1a<strong>\u5141\u8bb8\u6700\u591a2\u5757\u78c1\u76d8\u635f\u574f<\/strong><\/p>\n<p>\u6700\u5c11\u78c1\u76d8\u6570\uff1a4, 4+<\/p>\n<p>\u6210\u672c\u5c31\u63d0\u5347\u4e86\uff0c\u5bb9\u9519\u80fd\u529b\u52a0\u5f3a\u3002 \u7a7a\u95f4\u6362\u5bb9\u9519\u3002<\/p>\n<h4 id=\"tid-4Fyt2n\">3.7 RAID-50<\/h4>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080142997.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30390\" title=\"RAID\u78c1\u76d8\u9635\u5217-8\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080142997.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-8\" width=\"1106\" height=\"544\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080142997.png 1106w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080142997-300x148.png 300w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080142997-1024x504.png 1024w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080142997-768x378.png 768w\" sizes=\"auto, (max-width: 1106px) 100vw, 1106px\" \/><\/a><\/p>\n<p>\u6210\u672c\u66f4\u9ad8\u3002\u5197\u4f59\u6027\uff0c\u5b89\u5168\u6027\u66f4\u9ad8\u3002\u5229\u7528\u7387\u4f4e\u3002<\/p>\n<p>\u6700\u5c11\u78c1\u76d8\u6570\uff1a6<\/p>\n<h4 id=\"tid-EJPw3B\">3.8 RAID-60<\/h4>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080142251.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30388\" title=\"RAID\u78c1\u76d8\u9635\u5217-9\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080142251.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-9\" width=\"962\" height=\"512\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080142251.png 962w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080142251-300x160.png 300w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080142251-768x409.png 768w\" sizes=\"auto, (max-width: 962px) 100vw, 962px\" \/><\/a><\/p>\n<p>\u6700\u5c11\u78c1\u76d8\u662f8\u5757\u3002<\/p>\n<p>\u6210\u672c\u6700\u9ad8\uff0c\u6700\u7a33\u5b9a\uff0c\u5b89\u5168\u6027\u6700\u597d\uff0c\u5229\u7528\u7387\u6700\u4f4e\u3002<\/p>\n<h4 id=\"tid-XPRbnN\">3.9 \u5176\u4ed6\u7ea7\u522b<\/h4>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080145974.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30389\" title=\"RAID\u78c1\u76d8\u9635\u5217-10\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080145974.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-10\" width=\"756\" height=\"638\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080145974.png 756w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080145974-300x253.png 300w\" sizes=\"auto, (max-width: 756px) 100vw, 756px\" \/><\/a><\/p>\n<p>JBOD\uff1aJust a Bunch Of Disks \u53ea\u662f\u4e00\u5806\u78c1\u76d8<\/p>\n<p>\u529f\u80fd\uff1a\u5c06\u591a\u5757\u78c1\u76d8\u7684\u7a7a\u95f4\u5408\u5e76\u5728\u4e00\u4e2a\u5927\u7684\u8fde\u7eed\u7a7a\u95f4\u4f7f\u7528<\/p>\n<p>\u7b2c\u4e00\u5757\u78c1\u76d8\u5b58\u653e\u6240\u6709\u78c1\u76d8\u7684\u5206\u6bb5\u4fe1\u606f\uff0c\u6574\u4e2a\u9635\u5217\u4f1a\u5931\u8d25\uff0c\u540e\u7eed\u78c1\u76d8\u635f\u574f\u53ea\u4f1a\u5f71\u54cd\u672c\u5757\u78c1\u76d8\u7684\u6570\u636e\u3002<\/p>\n<p>\u53ef\u7528\u7a7a\u95f4\uff1asum(S1,S2...)<\/p>\n<p><strong>RAID7 \u975e\u6807\uff0c\u4e13\u5229<\/strong><\/p>\n<p>\u975e\u516c\u5f00\u6807\u51c6\uff0c\u6027\u80fd\u6700\u597d\u7684\uff0cRAID7\u662f\u4ee5RAID3\u548c4\u4e3a\u57fa\u7840\u53d1\u5c55\uff0c\u7ecf\u8fc7\u5f3a\u5316\u539f\u6765\u7684\u4e00\u4e9b\u9650\u5236\u3002\u53ef\u540c\u65f6\u5904\u7406\u5927\u91cfIO\u8981\u6c42\uff0c\u6240\u4ee5\u6027\u80fd\u8d85\u8d8a\u5176\u4ed6\u7ea7\u522b\uff0c\u6210\u672c\u975e\u5e38\u9ad8\u6602\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u4e00\u4e2a\u72ec\u7acb\u5b58\u50a8\u8ba1\u7b97\u673a\uff0c\u81ea\u5e26OS\u53catools\uff0c\u53ef\u72ec\u7acb\u8fd0\u884c\uff0c\u7406\u8bba\u4e0a\u6027\u80fd\u6700\u9ad8\u7684RAID\u6a21\u5f0f\uff0c\u4e0d\u901a\u7528\uff01\u4e00\u822c\u4f01\u4e1a\u4e0d\u9002\u7528\u3002<\/p>\n<h3 id=\"raid\u603b\u7ed3\">RAID\u603b\u7ed3<\/h3>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080150100.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30391\" title=\"RAID\u78c1\u76d8\u9635\u5217-11\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080150100.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-11\" width=\"630\" height=\"473\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080150100.png 630w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080150100-300x225.png 300w\" sizes=\"auto, (max-width: 630px) 100vw, 630px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/gitee.com\/leosuo\/drawbed\/raw\/master\/img\/202111080150546.png\" data-fancybox=\"gallery\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30392\" title=\"RAID\u78c1\u76d8\u9635\u5217-12\" src=\"http:\/\/blog.idc.net\/wp-content\/uploads\/2023\/06\/202111080150546.png\" alt=\"RAID\u78c1\u76d8\u9635\u5217-12\" width=\"1146\" height=\"1122\" srcset=\"https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080150546.png 1146w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080150546-300x294.png 300w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080150546-1024x1003.png 1024w, https:\/\/idc.net\/help\/wp-content\/uploads\/2023\/06\/202111080150546-768x752.png 768w\" sizes=\"auto, (max-width: 1146px) 100vw, 1146px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>*\u672c\u7ae0\u91cd\u70b9\uff1a\u4e86\u89e3\u5404RAID\u7ea7\u522b\u7684\u539f\u7406\u4f18\u7f3a\u70b9\u53ca\u5e38\u7528\u7ea7\u522b\u5b9e\u73b0\uff0c\u4f01\u4e1a\u4e2d\u5382\u5546\u5927\u591a\u63d0\u4f9b\u4e86\u786cRAID\u65b9\u6848\u3002 1\u3001\u4ec0\u4e48\u662fRA [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6989],"tags":[],"class_list":["post-30380","post","type-post","status-publish","format-standard","hentry","category-datacenter"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/30380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=30380"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/30380\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=30380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=30380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=30380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}