May 21, 20197 yr I am trying to work out the best way to expand my space for VMs. I have a single M.2 slot currently with a 1TB NVMe drive, I can swap that out for a 2TB but would need to use images for everything. Alternatively I could just purchase the extra 2TB for everything and use a PCI adapter (although that seems fraught with something called m-key and b-key?!) but for my gaming VM use pass-through on the 1TB. How much performance difference would there be? I am running out of space for an extra PCI card, ideally a combo USB-3/M.2 card to host the 2TB would be best but struggling to find one which support NVMe drives.
May 22, 20197 yr Most NVMe SSDs use 4 PCIe lanes. If you plug one of these adapters into an x4 slot, there should be a negligible performance hit. After all, PCIe is PCIe, no matter what physical connector is used. I don't think you can pass through a storage device to a VM. You will probably have to assign it another vdisk and put the 1TB drive as cache with the 2TB one. Edited May 22, 20197 yr by Ep1cPl4yz
May 22, 20197 yr 8 hours ago, Ep1cPl4yz said: I don't think you can pass through a storage device to a VM. Yes, you can. I suggest you watch through SpaceInvader One's youtube library of videos on Unraid, there is a lot of good information there.
May 22, 20197 yr Author Yes I have just juggled things about with my existing storage for now and have passed it through just like any other PCI device. Seems to work very well.
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