2 SSD Migration

Support and Troubleshooting
1

Hi everyone,

I’m currently running Umbrel and I’m thinking about migrating my setup to two SSDs.

Is it possible to combine two SSDs in such a way that Umbrel recognizes them as a single drive (for example via RAID or another method)?

Also, what would be the recommended way to migrate the existing data to this new setup without losing anything?

Any advice or experiences would be really appreciated.

Thanks!

2

Option 1: LVM — Merge both SSDs into one volume :white_check_mark:

The solution is to set up an LVM group and volume — a special Linux volume that can span its disk space across multiple drives or partitions, appearing as a single volume to the system.
Here are the steps via SSH:

1. Find your SSD device names

lsblk

2. Initialize both SSDs as physical volumes

pvcreate /dev/nvme0n1 /dev/nvme1n1

3. Create a Volume Group spanning both

vgcreate umbrel-storage /dev/nvme0n1 /dev/nvme1n1

4. Create one logical volume using all space

lvcreate -l 100%FREE -n data umbrel-storage

5. Format and mount it

mkfs.ext4 /dev/umbrel-storage/data
mount /dev/umbrel-storage/data /mnt/data

Then add it to /etc/fstab so it mounts automatically on boot.

Option 2: Separate SSDs via fstab (simpler & safer) :white_check_mark:
• SSD 1 → Umbrel OS + system
• SSD 2 → mounted separately for specific apps (Bitcoin node, Jellyfin, Nextcloud, etc.)
• Both are active and usable, just not merged into one
This is the most community-recommended approach for mini PCs.

Option 3: RAID 0 (merge + speed boost) :high_voltage:
Using mdadm you can create a RAID 0 array — both SSDs appear as one, with combined capacity and faster read/write speeds. But this is the riskiest option — if one SSD fails, everything is gone.

3

Thank you for the answer, I was waiting so long for someone to help. I will try to make it work, prefer option 2 since it is more safe than 1. Will let you know if it worked.