Adding new SDD to cache pool

Recommended Posts

Hi all,

I hope you can help.



I have an existing cache drive, and NVMe SSD.

I use it as a cache and also the appdata drive for docker containers.

It's backed up nightly to the main array.


I would like to add a second to create a cache pool for redundancy.

Is this possible since it has data on it already?






Edited by Tom Sealey
Changed title
Link to comment
1 hour ago, itimpi said:

What file system is in use for the current cache drive?    If it is BTRFS then yes you can add a drive at any time.    If it is XFS then you would first need to back it up elsewhere as a multi-drive pool HAS to use a BTRFS file system.

Thansk, it is BTRFS. 


Is there any docs on adding an additional drive?


Link to comment
1 hour ago, trurl said:

The title you have given this thread says you want to add HDD to this pool? Not recommended to mix HDD and SSD.

Ah good point, I'm planning on adding a matching NVMe SSD.

But thanks for the heads up.

Edited by Tom Sealey
Link to comment
  • Tom Sealey changed the title to Adding new SDD to cache pool

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.