I currently use btrfs on almost all my server and offline backup drives mainly because of the ability to transparently compress files to save space. But apparently btrfs can get corrupted if it unexpectedly loses power? Is there a more robust and corruption resistant filesystem that you’d recommend that also has the ability to compress files?
I believe ZFS fits your needs. Using ZFS with TrueNAS I can verify it supports transparent compression. It’s supposed to be very stable against data corruption. The only thing I can say about data corruption is in my 10+ years of using it, I haven’t had any issues.
For the OP, in case you go for zfs, don’t forget to create a cron job for scrubbing, truenas has support for this built in. It repairs things like bit rot, should they occur.
Good looking out.