[vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n

\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u548c\u4f3a\u670d\u5668\u8a17\u7ba1\u670d\u52d9\u9818\u57df,\u5be6\u65bd\u6b63\u78ba\u7684RAID(\u7368\u7acb\u78c1\u789f\u5197\u9918\u9663\u5217)\u914d\u7f6e\u5c0d\u65bc\u7372\u5f97\u6700\u4f73\u6548\u80fd\u548c\u8cc7\u6599\u5b89\u5168\u6027\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6280\u8853\u6307\u5357\u63a2\u8a0e\u4e86\u5404\u7a2e\u78c1\u789f\u5be6\u65bd\u65b9\u6848\u3001\u5b83\u5011\u7684\u67b6\u69cb\u5dee\u7570\u4ee5\u53ca\u5728\u4f01\u696d\u74b0\u5883\u4e2d\u7684\u5177\u9ad4\u61c9\u7528\u5834\u666f\u3002<\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] <\/p>\n

\u7406\u89e3RAID\u67b6\u69cb<\/strong><\/h2>\n

\u7368\u7acb\u78c1\u789f\u5197\u9918\u9663\u5217\u6280\u8853\u5728\u786c\u9ad4\u548c\u8edf\u9ad4\u5c64\u9762\u904b\u4f5c,\u901a\u904e\u78c1\u789f\u689d\u5e36\u5316\u3001\u93e1\u50cf\u548c\u5947\u5076\u6821\u9a57\u8a08\u7b97\u4f86\u5be6\u73fe\u4e0d\u540c\u7684\u6548\u80fd\u548c\u5197\u9918\u76ee\u6a19\u3002\u57fa\u672c\u5efa\u69cb\u6a21\u7d44\u5305\u62ec:<\/p>\n

\n
• \u689d\u5e36\u5316(\u8de8\u9a45\u52d5\u5668\u5206\u4f48\u8cc7\u6599)<\/li>\n
• \u93e1\u50cf(\u8cc7\u6599\u8907\u88fd)<\/li>\n
• \u5947\u5076\u6821\u9a57(\u932f\u8aa4\u6aa2\u67e5\u548c\u6062\u5fa9)<\/li>\n<\/ul>\n

  [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n

  RAID 0: \u6ce8\u91cd\u6548\u80fd\u7684\u689d\u5e36\u5316<\/strong><\/h2>\n

  RAID 0\u5be6\u73fe\u5340\u584a\u7d1a\u689d\u5e36\u5316,\u4f46\u4e0d\u63d0\u4f9b\u5197\u9918\u3002\u5c0d\u65bc\u9700\u8981\u6700\u5927I\/O\u6548\u80fd\u7684\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883,\u9019\u7a2e\u914d\u7f6e\u63d0\u4f9b\u986f\u8457\u512a\u52e2:<\/p>\n

  \r\n\u7406\u8ad6\u6548\u80fd\u8a08\u7b97:\r\n\u8b80\u53d6\u901f\u5ea6 = (\u55ae\u500b\u9a45\u52d5\u5668\u901f\u5ea6) \u00d7 (\u9a45\u52d5\u5668\u6578\u91cf)\r\n\u5beb\u5165\u901f\u5ea6 = (\u55ae\u500b\u9a45\u52d5\u5668\u901f\u5ea6) \u00d7 (\u9a45\u52d5\u5668\u6578\u91cf)\r\n\u5132\u5b58\u6548\u7387 = 100%\r\n    <\/code><\/pre>\n
  \u8003\u616e\u4f7f\u7528\u56db\u500b500GB SSD\u7d44\u6210\u7684RAID 0\u8a2d\u7f6e:<\/p>\n
  \n
  \u7e3d\u5bb9\u91cf: 2TB<\/li>\n
  \u5faa\u5e8f\u8b80\u53d6: \u6700\u9ad82,000MB\/s<\/li>\n
  \u5faa\u5e8f\u5beb\u5165: \u6700\u9ad81,800MB\/s<\/li>\n<\/ul>\n
      [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] <\/p>\n
  RAID 1: \u95dc\u9375\u8cc7\u6599\u7684\u93e1\u50cf\u914d\u7f6e<\/strong><\/h2>\n
  RAID 1\u63a1\u7528\u78c1\u789f\u93e1\u50cf,\u5728\u9a45\u52d5\u5668\u4e4b\u9593\u5efa\u7acb\u8cc7\u6599\u7684\u7cbe\u78ba\u526f\u672c\u3002\u5be6\u65bd\u904e\u7a0b\u5305\u62ec:<\/p>\n
  \r\nRAID 1\u914d\u7f6e\u793a\u4f8b:\r\nmdadm --create \/dev\/md0 --level=1 --raid-devices=2 \/dev\/sda1 \/dev\/sdb1\r\n\r\n# \u76e3\u63a7RAID\u72c0\u614b\r\nwatch cat \/proc\/mdstat\r\n    <\/code><\/pre>\n
  \u5728\u9999\u6e2f\u4f3a\u670d\u5668\u74b0\u5883\u4e2d\u7684\u4e3b\u8981\u6548\u80fd\u7279\u5fb5:<\/p>\n
  \n
  \u8b80\u53d6\u6548\u80fd: \u589e\u5f37(\u591a\u500b\u8b80\u53d6\u8def\u5f91)<\/li>\n
  \u5beb\u5165\u6548\u80fd: \u8207\u55ae\u500b\u9a45\u52d5\u5668\u76f8\u4f3c<\/li>\n
  \u5197\u9918: N+N(\u5b8c\u5168\u93e1\u50cf)<\/li>\n<\/ul>\n
      [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] <\/p>\n
  RAID 5: \u5177\u6709\u5947\u5076\u6821\u9a57\u7684\u5e73\u8861\u6548\u80fd<\/strong><\/h2>\n
  RAID 5\u7d50\u5408\u4e86\u5206\u6563\u5f0f\u5947\u5076\u6821\u9a57\u548c\u5340\u584a\u7d1a\u689d\u5e36\u5316\u3002\u5947\u5076\u6821\u9a57\u8a08\u7b97\u904e\u7a0b\u5982\u4e0b:<\/p>\n
  \r\n\u5947\u5076\u6821\u9a57\u8a08\u7b97(XOR):\r\n\u8cc7\u6599\u5340\u584a1 \u2295 \u8cc7\u6599\u5340\u584a2 \u2295 \u8cc7\u6599\u5340\u584a3 = \u5947\u5076\u6821\u9a57\u5340\u584a\r\n\r\n\u6062\u5fa9\u904e\u7a0b:\r\n\u4e1f\u5931\u5340\u584a = \u5269\u9918\u5340\u584a \u2295 \u5947\u5076\u6821\u9a57\u5340\u584a\r\n    <\/code><\/pre>\n
  \u4f3a\u670d\u5668\u8a17\u7ba1\u74b0\u5883\u4e2d\u5178\u578bRAID 5\u9663\u5217\u7684\u6548\u80fd\u6307\u6a19:<\/p>\n
  \n
  \u8b80\u53d6IOPS: (N-1) \u00d7 (\u55ae\u9a45\u52d5\u5668IOPS)<\/li>\n
  \u5beb\u5165IOPS: (N-1) \u00d7 (\u55ae\u9a45\u52d5\u5668IOPS) \/ 4<\/li>\n
  \u53ef\u7528\u5bb9\u91cf: (N-1) \u00d7 (\u55ae\u9a45\u52d5\u5668\u5bb9\u91cf)<\/li>\n<\/ul>\n
     [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]  <\/p>\n
  RAID 10: \u4f01\u696d\u7d1a\u6548\u80fd\u548c\u5197\u9918<\/strong><\/h2>\n
  RAID 10(1+0)\u5728\u5d4c\u5957\u914d\u7f6e\u4e2d\u7d50\u5408\u4e86\u689d\u5e36\u5316\u548c\u93e1\u50cf\u3002\u5c0d\u65bc\u8655\u7406\u95dc\u9375\u4efb\u52d9\u61c9\u7528\u7a0b\u5f0f\u7684\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u63d0\u4f9b\u5546,\u9019\u7a2e\u67b6\u69cb\u63d0\u4f9b:<\/p>\n
  \r\nRAID 10\u5be6\u65bd\u793a\u4f8b:\r\n# \u9996\u5148\u5275\u5efa\u5169\u500bRAID 1\u9663\u5217\r\nmdadm --create \/dev\/md1 --level=1 --raid-devices=2 \/dev\/sda1 \/dev\/sdb1\r\nmdadm --create \/dev\/md2 --level=1 --raid-devices=2 \/dev\/sdc1 \/dev\/sdd1\r\n\r\n# \u7136\u5f8c\u5c07\u5b83\u5011\u7d44\u5408\u6210RAID 0\r\nmdadm --create \/dev\/md0 --level=0 --raid-devices=2 \/dev\/md1 \/dev\/md2\r\n    <\/code><\/pre>\n
     [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]  <\/p>\n
  \u6548\u80fd\u57fa\u6e96\u6e2c\u8a66\u548c\u5206\u6790<\/strong><\/h2>\n
  \u9999\u6e2f\u8cc7\u6599\u4e2d\u5fc3\u7684\u5be6\u969b\u6548\u80fd\u6e2c\u8a66\u986f\u793a\u4ee5\u4e0b\u6307\u6a19:<\/p>\n
  \r\nfio --filename=\/dev\/md0 --direct=1 --rw=randrw \\\r\n    --bs=4k --ioengine=libaio --iodepth=256 \\\r\n    --runtime=120 --numjobs=4 --time_based \\\r\n    --group_reporting --name=benchmark-test\r\n    <\/code><\/pre>\n