Boot problem Changing from Virtio to SCSI Virtio on Windows srv 2016

[yena]

Hello,
i'm testing Win2016 server VM,
using Virtio disk ( no SCSI VIRTIO ) i have very slow I/O performance ( Write Back or NoCACHE ).
Is it better to switch to SCSI VIRTIO ?
I have tried but the VM can't boot .. need i a new setup from zero or can i switch in some way from Virtio to SCSI VIRTIO ?

Some tips to have more performance on Windown 2016 Server I/O ?

I have 64G Ram,
2 x 3TB sata HD

I have tested with standard ARC cache and with 8G limit Arc Cache .. when the system fill all arch cache the write inside the VM go down near to zero...

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pveversion -V
proxmox-ve: 5.1-41 (running kernel: 4.15.10-1-pve)
pve-manager: 5.1-46 (running version: 5.1-46/ae8241d4)
pve-kernel-4.15.10-1-pve: 4.15.10-4
pve-kernel-4.13.13-6-pve: 4.13.13-42
pve-kernel-4.13.13-2-pve: 4.13.13-33
corosync: 2.4.2-pve3
criu: 2.11.1-1~bpo90
glusterfs-client: 3.8.8-1
ksm-control-daemon: 1.2-2
libjs-extjs: 6.0.1-2
libpve-access-control: 5.0-8
libpve-common-perl: 5.0-30
libpve-guest-common-perl: 2.0-14
libpve-http-server-perl: 2.0-8
libpve-storage-perl: 5.0-18
libqb0: 1.0.1-1
lvm2: 2.02.168-pve6
lxc-pve: 3.0.0-2
lxcfs: 3.0.0-1
novnc-pve: 0.6-4
proxmox-widget-toolkit: 1.0-14
pve-cluster: 5.0-20
pve-container: 2.0-21
pve-docs: 5.1-17
pve-firewall: 3.0-7
pve-firmware: 2.0-4
pve-ha-manager: 2.0-5
pve-i18n: 1.0-4
pve-libspice-server1: 0.12.8-3
pve-qemu-kvm: 2.11.1-5
pve-xtermjs: 1.0-2
qemu-server: 5.0-22
smartmontools: 6.5+svn4324-1
spiceterm: 3.0-5
vncterm: 1.5-3
zfsutils-linux: 0.7.7-pve1~bpo9
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Thansk!

 

[J.Carlos]

It should work, have you check the tab "options" -> Boot Order and set "Disk ´scsi0´" ?

 

[yena]

It should work, have you check the tab "options" -> Boot Order y set "Disk ´scsi0´" ?

Yes but no way :-(