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As I was told enterprise version is the same as old community version. To keep track of package version go to https://pve.proxmox.com/wiki/Downloads and find '# pveversion -v' list But you will have to update it manually to needed version.

One I had a problem / unknow error with ZFS. It started then I wanted to clean old data, old snapshots. ZFS started to hang up. Nothing helped. Tried to import the pool with -N - still the same. I did not know what ZFS was trying to do. Only importing pool in read-only mode allowed to see...

ZFS is not suitable to run on single disk then problems. Specially for system OS partition. If you could put 2 disks for ZFS mirror to handle this type of errors.

My server did the same ( or at least I think so ). I use Corsair Commander Pro to control the speed of ventilators. After speeding it up CPU is not getting hot and do not do auto system reboot by hardware. Try to limit CPU speed if you cannot cool your NUC.

If you want to know then yes, keep it on. In the same situation others FS will continue to operate. But keep in mind your VM will be broken or you movie will be half way watchable.

I will ask a question for thought. If recordsize or volblocksize is set to 1M, what is the minimum read IO for that block even need part of it only? For example MariaDB with 16K database storage on recordsize/volblocksize with 1M. Will ZFS read 16K of request or all 1M of the block before...

This thread started as performance comprising between native ZFS raid and ZFS on top of H.Raid and half leg is it good to run ZFS on H.Raid. I can tell you this - How you will set up that's way it will work. If you want H.Raid to monitor HDD, I can suggest to set ZFS checksum=off otherwise ZFS...

How HWRAID protect from data distortion or bit rot ?

I start this software #top -f -F 1 And then with "L" I change to see all disks and CPU. In the benchmark time you can see disk activity and you can compare do all disk are busy equally and what is CPU activity.

ZFS was not designed to allow remove disk. It is very complex system. Yes you can remove disk from the mirror. Maybe one day it will be possible.

You cannot remove disk in your situation right now. Plan how to backup your data and recreate ZFS.

ZFS is very complex system. It is COW system. If you don't care compression, encryption, snapshot, data integrity then use old file systems. Use #atop to see CPU and disk usage. Maybe it will show something interesting.

Backup your data and recreate ZFS

ZFS flush data in sync mode. It will wait until slowest disk finish write and then it will push another batch to write. And of course all metadata / transaction updates.

If RAM is too expenses then don't use ZFS

I did not find my talk in #IRC about ARC problem but I found the same situation mentioned here - https://github.com/openzfs/zfs/discussions/11676 It is good if they fixed it.

ARC min and max should be not equal, max should be min+1, or min = max-1 Otherwise it will not limit

If you want to speed up write you can set up sync=disabled But keep in mind you can lose some data in the power outage as of VM look here - https://kb.blockbridge.com/technote/proxmox-optimizing-windows-server/part-2.html

Server is running for 19 days without random reboot. I changed network card to Intel 10GB and speeded CPU cooler. One reason in my mind was CPU temp spike.

I'm curious, have you tried speed test?