From the blog post linked in the article:
> The largest failure was with btrfs — after a reboot, a 50 TB filesystem (in mirror, for backups) simply stopped working.
RAID is not a backup.
> The largest failure was with btrfs — after a reboot, a 50 TB filesystem (in mirror, for backups) simply stopped working.
RAID is not a backup.
But restoring 50TB of data from actual backups take a lot of time.
I like BTRFS to a fair degree, but thae fact that _any_ two drives failing in its "raid 10" configuration causes data loss is not obvious or intuitive.