How do I add a disk to create a redundant cache pool?   A few notes: -unRAID v6.4.1 or above required, upgrade first if still on an older release. -Current cache disk filesystem must be BTRFS, you can’t create a pool from an XFS or ReiserFS cache. -Always a good idea to backup anything important on the current cache in case something unexpected happens -When first creating a pool with 2 or more devices initial profile used will be raid1, this can be changed later.
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