RAID 10 Question

Posted on 2004-11-11
Last Modified: 2010-04-03
I have a RAID 10 setup with 4x 80GB SATA disks and a hardware RAID controller.
A few weeks a go we lost a disk and then a few days after that we lost another.  I replaced
the disks and rebuilt the array...everything was fine.

My question is - was I lucky?
Can you afford to lose any 2 two disks in a RAID 10 setup
or does it depend on which combination they go bang?!

Question by:u9707118
    LVL 87

    Accepted Solution

    It depends on the combination. If 2 disks die that have the same data on them, you loose the data. You were lucky.
    LVL 6

    Assisted Solution

    Raid works link this

    you have  2 drive that striped  (made in to one big drive)

    you have 2 drive more  striped

    Then the too sets are mirrored

    You lose 1 drive ok

    you can 2 if they are on the same set. (This is not likely because when 1st drive dies set will shut down)

    So you could lose 2 drives and still be running, but not likely.


    Author Comment

    Thanks Guys,
    All I needed to know!

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