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G Speed

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    [6.9.2] & [6.10.0-rc5] Dell H730 Avago SAS based MegaRAID driver - Spin Up Performance Broken

    in Stable Releases

    Posted

    On 5/21/2022 at 6:08 AM, LammeN3rd said:

    BTW, the HBA330 and H330 are from a HW perspective basically the same card, the HBA330 is a better card for Unraid when you use SAS drives because it has a much higher queue depth for SATA drives it does not really matter.

    Hey thanks for responding...
    Belive it or not.. after trying everything....
    I removed all the dell drives and tested with some new wd red pros....

    Everything is working fine... I put one dell drive back in.. same issue :D

    Something with the Firmware on those Dell Drives???

    [6.9.2] & [6.10.0-rc5] Dell H730 Avago SAS based MegaRAID driver - Spin Up Performance Broken

    in Stable Releases

    Posted

    On 5/17/2022 at 3:21 AM, LammeN3rd said:

    I don't have a HBA330 but I'm running unRAID on a H330 in HBA mode for the last 5 years and have never had this issue.

    no special settings or mods just a fairly plan 6.9.2 no-matter how i start the parity check I get around 200MB/s per disk (as long as there is no other IO)

    How did I not see this!
    Do your drives spin down? or are they always up?

    [6.10.0-rc8] Dell H730 & HBA330 Mini - Spin Up Performance Broken

    in Prereleases

    Posted

    5 hours ago, limetech said:

    I don't see anything unusual in the diags.  Starting a parity check on spun-down drives will cause them to spin up via I/O, meaning there is no explicit "spin up" command sent to the drive, instead it spins itself up due to I/O.  The 'Spin-up All' button sends an explicit spin-up command to each drive, well actually it tells the drive to exit 'standby' state.  Maybe the controller or those drives, has some kind of power saving feature whereby spin-up by I/O leaves drive in an "in between" state where it's not at full performance in an effort to save power? - but that doesn't make much sense to me.

     

    Has anyone else seen this issue?

    Thanks for looking into this, I just want to clarify it's not just a parity check.. it's absolutely anything.

     

    Transfering files disk to disk via MC, using diskspeed as a benchmarks..I'm assuming you looked at the video?

     

    I will investigate later tonight, to see if I can find anything in the bios/idrac or controller regarding power savings.

     

     

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