replace cache drive


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BTRFs supports multiple members in the cache pool for redundancy or speed, has more options for stuff like snapshots and other advanced features, but is more sensitive to adverse events like crashes and such.

 

XFS is limited to a single drive, but is more resilient. I've seen very few reports on here about cache drives failing to mount with XFS.

 

No single correct answer for everyone, but my general rule of thumb is that if your server is uber stable and you want the most options available, BTRFS.

If your server occasionally hiccups, or you have issues with unclean shutdowns, XFS.

 

Neither option is bulletproof, as always a backup strategy is required for when things go poorly.

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