Replacing 1TB SSDs with 2TB SSDs ZFS Pool


New Member
Jan 29, 2022
Hi, I din't find a lot of Information on the exact practice on how to do it.

I have a Server with only 6 SSD Slots (2 for the Boot Disk, 4 for the Storage Disk)

I have 4x 1TB SSD inside a Raid 10 ZFS Pool, and I want to upgrade those to 2TB, if possible without Downtime?

My current procedure would be:
1. Take 1 Disk offline
2. Replace this Disk
3. Rebuild the Pool
4. Repeat and with autoincrease it should automatically append the second Terabyte right?


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!