March 10, 20233 yr Hello - I have a single ssd drive acting as cache. It's in pre-fail now so I need to do something with it soon. I have another same size (not brand) SSD and wondering if I can convert my current single disk cache to a mirrored cache without losing data on the current drive. Possible? If so can someone provide steps to do so?
March 10, 20233 yr See adding disks to pool https://wiki.unraid.net/Manual/Storage_Management#Adding_disks_to_a_pool
March 13, 20233 yr Community Expert Current cache is btrfs, so you can add a device and the pool will be mirrored, of course existing device still needs to be working correctly for the mirroring to be successful.
March 20, 20233 yr Author @JorgeB I adding a second ssd and then rebalance happened so I believe we're good on my original request. After that was successful I pulled the bad SSD and put in the replacement. After adding the replacement into the pool I assumed rebalance would run again on the newly added drive but didn't. However didn't see that when clicking on cache drive. How can I tell if the two drives are mirrored correctly?
March 21, 20233 yr Community Expert Pool is in raid1 so looks correct, you can post the diags to confirm.
March 21, 20233 yr Community Expert All looks OK, removed device was deleted but pool remained raid1, and data was rebalanced for the remaining devices.
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