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RAID 5 Questions

Posted on 2011-09-30
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Last Modified: 2016-12-08
(New to RAID management, have searched for answers!)
1.  We have a RAID 5 array, partitioned into two drives.  One disk needs to be replaced.  Will the rebuild automatically partition the new disk?
2.  Using three 300 GB disks, logical disk size = 500GB.  Is that size increase a function of RAID 5?  
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Question by:cfsamike
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jrwarren earned 500 total points
ID: 36892577
The Logical Drives will automatically rebuild.  You are safe on that.  Just do not lose a second drive before you replace the bad one!

I do not know the precise formula, but there i sa loss of storage of about 33-40% on RAID 5 configurations.  So 500GB is a good (conservative) estimate on space available once 3X300GB is configured for RAID5.
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by:cfsamike
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Thank you for the fast service jrwarren!
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