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about raid0 disk I/O speed
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about raid0 disk I/O speed

I have question
I have few servers, all servers do 4x3tb raid0
but when I use curl -Lso- bench.sh | bash
test disk I/O speed
some servers disk can over 400MB/s
some servers only 210MB/s
what effect this raid0 disk speed?

Comments

  • vishvish Member

    Things like speed of slowest disk, sata 2 vs sata 3, just to name a few

  • imokimok Member

    Also probably some of them are in heavier use than others

  • @music7698 said:
    I have question
    I have few servers, all servers do 4x3tb raid0
    but when I use curl -Lso- bench.sh | bash
    test disk I/O speed
    some servers disk can over 400MB/s
    some servers only 210MB/s
    what effect this raid0 disk speed?

    Well, it depends on the specific hardware they are using. SATA, SAS, FC etc

    The average speed of SATA is around 3Gbit/s while the speed of SAS varies from 3Gbit/s to 22.5Gbit/s. To get this speed, the motherboard needs to have a high bandwidth bus.

  • letboxletbox Member, Patron Provider

    @music7698 said:
    I have question
    I have few servers, all servers do 4x3tb raid0
    but when I use curl -Lso- bench.sh | bash
    test disk I/O speed
    some servers disk can over 400MB/s
    some servers only 210MB/s
    what effect this raid0 disk speed?

    Did they are same Motherboard model? There is some old Mb supporting 3Gbps instead of 6Gbps

  • qbeststarqbeststar Member, Host Rep

    @music7698 said:
    I have question
    I have few servers, all servers do 4x3tb raid0
    but when I use curl -Lso- bench.sh | bash
    test disk I/O speed
    some servers disk can over 400MB/s
    some servers only 210MB/s
    what effect this raid0 disk speed?

    Hello,

    Both servers use same HW ? Did they use HW raid or SW raid ?

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