Hard disk drive expansion
Hi All Experts,
I want to expand my server hard disk size. My server Dell 2950 currently running with RAID 5 and with 5 of 300GB capacity hard disk drive.
so is it possible to expand the hard disk size one by one. (i.e. take out one 300GB and replace with 2TB hard disk drive then let the server auto rebuild. after rebuilt completed. take another 300GB out and replace with 2TB up until all hard disk drive has been replace with 2TB, so I can get at least 2TB of hard disk space.
thanks.
I want to expand my server hard disk size. My server Dell 2950 currently running with RAID 5 and with 5 of 300GB capacity hard disk drive.
so is it possible to expand the hard disk size one by one. (i.e. take out one 300GB and replace with 2TB hard disk drive then let the server auto rebuild. after rebuilt completed. take another 300GB out and replace with 2TB up until all hard disk drive has been replace with 2TB, so I can get at least 2TB of hard disk space.
thanks.
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Hi Michael,
as far as my experience, you could do as you described in your initial post. The only thing left to do is, to enlarge the the RAID to the full capacity of your new drives. Most modern controllers allow a resize of a RAID5. Before you do such a thing, i strongly recommend a backup of your data on your RAID :)
as far as my experience, you could do as you described in your initial post. The only thing left to do is, to enlarge the the RAID to the full capacity of your new drives. Most modern controllers allow a resize of a RAID5. Before you do such a thing, i strongly recommend a backup of your data on your RAID :)
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http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/
So the hint with RAID1 above goes into the same direction, If the 2nd disc produces a bit error you are going to lose data in files that resides on the bad block(s).
So RAIDs should only be choosen out of performance reasons or for creating much larger volumes than available harddrives available, but not for data security reasons. They are not replacing a backup.