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How risky is the data corruption and recoverability in BTRFS vs. ZFS for pools?

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Coming from Windows Server ReFS and storage spaces where we use pools for everything. Trying to test and get an idea of the filesystems before the actual migration.

I see some people complaining about BTRFS corruption seem to have bad hardware (RAM). I have ECC but those can also fail too, although much rarer. Is ZFS that much better for data integrity at the cost of performance?

The pool will be for VMs and containers.

BTRFS is still the default for pools, so there must be good reasoning behind it.

Solved by JorgeB

  • Community Expert
4 minutes ago, veganbtw said:

BTRFS is still the default for pools, so there must be good reasoning behind it.

ZFS support is recent, so btrfs was the only choice for multidisk pools.

  • Author
1 minute ago, trurl said:

ZFS support is recent, so btrfs was the only choice for multidisk pools.

Does this mean Unraid intends to make ZFS the default in the near future? Or is the current ZFS support still too immature?

My goal is to avoid downtime and changing the filesystem in the future.

  • Community Expert
  • Solution

Unraid uses regular OpenZFS; it's not more or less mature than the ZFS used in other OSes. Regarding the default, not sure if there are plans to change that, but for redundant multi-device pools, I recommend using zfs, if nothing else, it is typically better at recovering from a dropped device. For single device pools, either one is fine.

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