@oreggin; the Wiki describes a planned disk replacement, but @pe1chl ran into an unexpected failure. Since Btrfs RAID1 doesn’t have automatic resync, it might be unreliable when disks go offline (kernel RAID handles resyncing differently)
Beyond what @pe1chl mentioned, there are plenty of other risks that haven’t even been brought up in the forum. With no recovery or repair kits available and a lack of documentation, one might wonder if MT did any real risk assessment at all before choosing Btrfs and (IMO, prematurely) released the RDS2216.
Two essential questions MT must be able to answer:
- What happens if the Btrfs file system fails?
- How do you perform a full system backup?
Check this out: http://forum.mikrotik.com/t/newsletter-123-february-2025/182258/23