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Thread: Poor Raid Performance (Gigabyte P55A-UD3)




  1. #1
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    Default Poor Raid Performance (Gigabyte P55A-UD3)

    Hi guys, I bought a new pc and make raid0 with 2x500GB (Samsung 501LJ 16MB Cache 7200rpm), but i have poor RAID 0 performance... don't know why...

    My system specs:

    Core i5 750
    Gigabyte P55A-UD3
    Samsung 2x500GB
    GTX470

    I Make two slices (100GB and 892GB), the two HDs have SMART, NCQ, Write Cache enables.

    Screens with HD Tune:

    First Slice (100GB)
    Attachment 3008

    Please help, I don't know what to do... I already update BIOS, drivers, rebuild raid....

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Poor Raid Performance (Gigabyte P55A-UD3)

    Disable USB 3 and SATA 6 and see if that helps.

    Are you using two graphics cards or one?

    Do you have the array setup on the first blue Intel ports (SATAII_0 and SATAII_1)?

  3. #3
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    Default Re: Poor Raid Performance (Gigabyte P55A-UD3)

    I disable the USB3 and Sata3 on BIOS e the same thing happen...

    I'm using the HDs on SATA2_0 and SATA2_1 the two first port.

  4. #4
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    Default Re: Poor Raid Performance (Gigabyte P55A-UD3)

    I made raid0 again with one slice (1000TB all 2x500GB with 128K strip)

    Attachment 3009

    I don't know what to do more... Think maybe one HD is bad or somenthing.

  5. #5
    Lsdmeasap's Avatar
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    Default Re: Poor Raid Performance (Gigabyte P55A-UD3)

    Hmmm, yes please test each drive one by one to be sure they both act the same.

  6. #6
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    Default Re: Poor Raid Performance (Gigabyte P55A-UD3)

    LoL I'm confuse. I disable and delete de RAID and when i go to install W7, i see all my partitions from my HD before i made the RAID, they have all my DATA....

    When i made the RAID i formatted the HD..

    Maybe the poor performance on RAID its because the fragmented data on this HD?
    Don't know..

    Anyway I installed W7 again without RAID, and make some benchs.

    First partition with W7 Sata port 0 (2_0)



    Second partition (With have my all Data, I remade one partition and format this)



    Don't know what to do now.
    The raid performance is right or not?
    My HDs have some problem?

  7. #7
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Poor Raid Performance (Gigabyte P55A-UD3)

    Not sure what is going on?

    I'd low level format each one, then try the RAID again

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