DS224C shelf missing/powered off with potential multi-disk panic
Applies to
- DS224C disk shelves
- ONTAP
Issue
- Shelf goes missing/appears to be powered off, resulting in all its disks reporting failed
- In the following example, shelf 2 suddenly loses all power and does not show up in
sysconfig -a
output:
Shelf 10: DS224-12 Firmware rev. IOM12 A: 0270 IOM12 B: 0270
Shelf 12: DS224-12 Firmware rev. IOM12 A: 0270 IOM12 B: 0270
Note: Shelf 11 is missing
- One or both nodes in HA pair attached to affected shelf may panic as a result of multiple disk failures above RAID tolerance threshold:
Panic string: aggr aggr1: raid volfsm, fatal multi-disk error..
- Power supplies still show amber lights; however, there is no disk activity or LED lights in front of the impacted disk shelf
SYSCONFIG-R
section in Active IQ AutoSupport will report any disks from missing shelf as FAILED