19.07.2017 22:59, Gilberto Nunes wrote:
One doubt: is it SCSI better than virtio??
I think you meant virtio-scsi vs virtio-blk. Other virtual SCSI
controllers are usually worse.
Depends on what do you want from it.
Virtio-scsi is the only interface that supports trim/discard, so it's
best choice for thin-provisioned storages. Also, it can pass through raw
SCSI device to guest (in PVE it does [did?] so with libiscsi-backed
storages), so minimizing virtualisation overhead. But it uses single IO
thread per controller, so if you want max performance with multiple
virtual disks, you must select virtio-scsi-single
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