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EvAnA11

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    VM Performance SSD Pool vs Unassigned drives

    in General Support

    Posted

    So I've got it running, but not finding the performance I was hoping for with x2 m.2 ssds in raid 0.  Maybe I'm asking too much of btrfs raid 0?  I'm also pretty new to all of Unraid.

     

    Hopefully I've just got something set incorrectly because the transfer speeds don't seem right at all.

     

    The Windows 10 VM vdisk is the sole thing currently running on the m.2 raid 0 storage pool but my transfer speeds are:

    Copying to array cache (also an m.2 ssd) 155-190MBps

    Copying from the array hdd to Win10 VM desktop is slower than usual around 130MBps (max is usually around 230MBps).

     

    I'm also finding the VM gets super sluggish when transferring to the array but no seeing an obvious bottleneck.  Attaching some screenshots and the Win10 VM xml, hoping someone has an idea.  The VM is running Q35-5.1 and vDisk Bus is VirtIO

     

    Thanks

    copying to array cache.PNG

    copying to array cache-cpu.PNG

    win10vm-xml.txt

    VM Performance SSD Pool vs Unassigned drives

    in General Support

    Posted

    Hello

     

    Wondering if anyone knows the answer before I reload my main rig the worse way.

     

    With the new storage pools available, I'm curious are there any benefits (particularly VM performance) to having 2 M.2 SSDs in a storage pool vs the same drives in say a Raid 0 config from the motherboard and run them directly to the VM as unassigned drive?

     

    I'm going to have a very simple setup starting with a single Windows 10 VM and a docker container running Plex.  Also would there be any difference in write performance from the Win 10 VM to the array cache drive (also SSD) with the two scenarios above?

     

    Thanks

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