ZFS mirror RAID advice for snapshot storage


Nov 7, 2019
Austin, TX
Hi there,

I've done a lot of reading on this before posting but really confused. I run a QNAP NAS at home so I know a bit about ZFS, thin provisioning, and thick provisioning but it also walks me through it quite well.

I have two 6 TB spindle disks that I made into a ZFS RAID within the Proxmox VE 8.0.4 GUI. Although, I was surprised I couldn't store snapshots on it and I could only use raw storage VM disks. I want to use thin provisioning.

I then was reading I could use directory storage. I called my ZFS RAID array wolf and made a folder storage linking to /wolf/kemo calling the folder storage kemo. Yay that seems to work!

But I hear about the folder requires the file system overhead, which I didn't want. I just want this wolf array to store snapshots and VM disks on it, the VMs being thin provisioned so I don't want to use raw.

I've only been learning about thin provisioning for the last year so could someone explain it to me like I'm 12?


PS: I also have a RAID1 setup on two 1TB nvme drives that proxmox is installed on. My main VMs and their boot hard drives are all stored there. This storage is secondary for Plesk backup dumps, media file storage, etc.
Last edited:


The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!