Cache drive question - 2 different size - Ok?

[GazCBG]

Hi,

 

Currently using a 500GB nVME for cache and have just removed a 250GB SSD for my PC and was wondering can I add the SSD to the cache?

If so does it fill one drive up then the other when space run out on 1 cache drive?

 

Thanks

[testdasi]

2 minutes ago, GazCBG said:

Hi,

 

Currently using a 500GB nVME for cache and have just removed a 250GB SSD for my PC and was wondering can I add the SSD to the cache?

If so does it fill one drive up then the other when space run out on 1 cache drive?

 

Thanks

Can you? Yes.

Should you? No.

 

The (multi-drive) cache pool is RAID-based (BTRFS RAID). So either you will have 250GB available space (RAID-1) or 500GB available space (RAID-0).

I.e. no improvement.

 

A better option is to mount the 250GB as unassigned and use it for write-heavy activities (e.g. temp download files). That will enhance the life span of both drives and still give you more storage space.