What happen when a server has a raid1 with 3 disks?

Posted on 2011-03-15
Last Modified: 2012-05-11
What happen when a server has a raid1 with 3 disks? Does it copy the same info on each drives?
Question by:SAM2009
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Accepted Solution

KGNickl earned 32 total points
ID: 35141894
Disk 2 will mirror Disk 1

Disk 3 will just be another drive.

Assisted Solution

driskollt earned 31 total points
ID: 35141909
RAID1 is a "Mirrored Pair" - Hence there is no such thing as RAID 1 with 3 drives.
LVL 33

Assisted Solution

PowerEdgeTech earned 31 total points
ID: 35141922
If it has three drives and you're sure it is a RAID 1, then the third drive is either a hot-spare for the RAID 1, a drive configured as a stand-alone drive (single-drive RAID 0, or similar, depending on the controller), or an unconfigured drive.

Assisted Solution

waleeda earned 31 total points
ID: 35141935
it will use only 2 disk and the 3rd one will not been used

better configure RAID 5 for 3 disk to use total size on 2 disks

Author Closing Comment

ID: 35142024
Ya maybe I did not check well. Thanks for your helps!

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