Don't understand log completely

[Mike Haskell]

Checking status of zfs pools:
NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT
Uzeb 928G 310G 618G 33% 1.00x ONLINE /mnt
jails 27.8G 5.97G 21.8G 21% 1.00x ONLINE /mnt

pool: Uzeb
state: ONLINE
status: One or more devices has experienced an error resulting in data
corruption. Applications may be affected.
action: Restore the file in question if possible. Otherwise restore the
entire pool from backup.
see: http://illumos.org/msg/ZFS-8000-8A
scan: scrub repaired 0 in 4h18m with 302 errors on Sun Mar 22 04:18:08 2015
config:

NAME STATE READ WRITE CKSUM
Uzeb ONLINE 0 0 0
gptid/e4023b1c-b22e-11e4-a4e6-6805ca25e1a5 ONLINE 0 0 0

errors: 302 data errors, use '-v' for a list

-- End of daily output --

Can someone explain this log. I know something is corrupt.

 

[danb35]

It appears that your pool Uzeb consists of only one disk, and therefore has no redundancy. That disk appears to have some bad sectors, and that means that your data is hosed.

 

[SweetAndLow]

Disk failed, this type of thing happens and this is why people use some kind of redundancy along with a backup.