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不是想当然，是引自Wikipedia英文版：
RAID 5 is seriously affected by the general trends regarding array rebuild time and the chance of drive failure during rebuild.
维基给出的参考文献Newman, Henry (2009-09-17). "RAID's Days May Be Numbered". EnterpriseStorageForum. Retrieved 2010-09-07.
还有，戴尔说的：
Rebuilding an array requires reading all data from all disks, opening a chance for a second drive failure and the loss of the entire array. In August 2012, Dell posted an advisory against the use of RAID 5 in any configuration on Dell EqualLogic arrays and RAID 50 with "Class 2 7200 RPM drives of 1 TB and higher capacity" for business-critical data.
参考文献 Peltoniemi, Mikko (2012-08-07). "New RAID level recommendations from Dell". Retrieved 2012-12-01.
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发表于 2016-3-29 20:31:37