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  1. V

    Poor disk performance

    Which one is better for single disk?
  2. V

    Poor disk performance

    Or maybe some cahching options on the host?
  3. V

    Poor disk performance

    Thank you very much for help. Tried first the suggestion regarding VM hardware. 1. Changed SCSI controller to Virtio SCSI. 2. Changed both disks to Virtio. 3. Changed NIC to Virtio. Unfortunately that did not help. Copying a 5Gb file inside VM hanged (see the screenshot). Also any long disk...
  4. V

    Poor disk performance

    I have limited write speed to prevent one machine writing too fast. But his does not help really.
  5. V

    Poor disk performance

    VirtIO drivers are installed and active. VM hardware attached.
  6. V

    Poor disk performance

    No clues?
  7. V

    Poor disk performance

    And yes, this is a clustered setup of 4 hosts.
  8. V

    Poor disk performance

    It was installed from ISO by our provider. pvesm status Name Type Status Total Used Available % backup3 dir disabled 0 0 0 N/A backupsrv lvm disabled 0...
  9. V

    Poor disk performance

    1. There are different ZFS setups on different hosts. The most powerfull host has a single-disk ZFS on SSD. zpool status pool: zfs state: ONLINE scan: scrub repaired 0B in 0 days 10:42:40 with 0 errors on Sun Jan 10 12:06:41 2021 config: NAME STATE...
  10. V

    Poor disk performance

    We have migrated multiple Windows VMs from Windows hosts to Proxmox (same hardware). There were no any performance problems on Windows hosts, but same hardware running Proxmox gives very poor performance while extensive disk IO in VMs or on host. We have tried different configurations: 1. ZFS...
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