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  1. #1

    1x SAS 10k or 4x SATA II Raid 10

    Which one would have a better and faster performance?

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  2. #2
    How long is a piece of string? We'd need to know the model of the drives, the model of the controller and the expected usage and access patterns to be able to answer that.

  3. #3
    The 4 SATA drives will be faster with a proper controller, not to mention the extra redundancy.
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  4. #4
    It's not necessarily faster, and while with R10 if you're lucky you can have two simultaneous failures, it's not guaranteed to withstand it and so should be treated as being tolerant of only a single concurrent failure.

  5. #5
    Join Date
    Mar 2003
    assuming its a half decent hardware raid 10 controller i would take the raid 10

  6. #6
    Join Date
    Jul 2009
    In the Datacenter.
    I would try and get a RAID controller like the Adaptec 2405 for RAID 10.

  7. #7
    Quote Originally Posted by SonicVPS View Post
    I would try and get a RAID controller like the Adaptec 2405 for RAID 10.
    That is good advice - they're sweet little cards the 2405's, great value too.

    I just checked my benchmarking stats, and they confirmed what I thought:

    The controller was an Adaptec 5805,
    2 x 2.5" 10k Seagate Savvio 10k.3 HDD's in a R1
    4 x 2.5" 7.2k Constellation NS HDD in a R10
    All caches enabled

    So basically the best 10k SAS drives vs the best 7.2k SATA drives, in most tests the SATA disks were faster by up to 25%.

    Where the 10k drives were faster was in random write operations - the 10k drives were 36% faster when performing 4k block size random write operations.

    This is why I said that in order to be able to make an informed decision, we need to know the planned usage.

  8. #8
    Join Date
    Dec 2001
    go for the raid 10 setup - 4 heads are usually better than 1 whne doing reads and writes.
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