Interesting findings.  I&#x27;m curious also to see how fixed width stripes change the performance profile in btrfs (presently not supported).  To be clear though, the raid5&#x2F;6 write hole only applies to power failures with data in flight.  It is still a concern, of course, but I think depending on your environment is acceptable to some (redundant PSUs, well engineered PDUs and UPS systems).  Personally, I&#x27;m of increasing opinion that parity rebuilds aren&#x27;t worth it anyway.  I&#x27;d rather raid10, raid1, or raid0 depending on use.  If I have to take a system out of production during parity rebuild (because IO activity is too intense for performant use), might as well not parity rebuild and simply reload the system on failure and rely on other cluster nodes.