Adding new SDD to cache pool

[Tom Sealey]

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?

 

Thanks

 

 

 

Edited July 1, 2021 by Tom Sealey
Changed title

[itimpi]

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.

[trurl]

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

[Tom Sealey]

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?

 

[Tom Sealey]

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 July 1, 2021 by Tom Sealey
Typo

[itimpi]

1 hour ago, Tom Sealey said:

Thansk, it is BTRFS. 

 

Is there any docs on adding an additional drive?

 

it is covered here in the 0nline documentation accessible via the ‘Manual’ link at the bottom of the Unraid GUI.

[Tom Sealey]

Thanks itimpi!