- Controller Platform: E2600, E2700, E2800, E5400, E5500, E5600, EF540, EF550, EF560
- E-Series Controller Firmware 7.xx
- E-Series Controller Firmware 8.xx
RecoveryGURU reports the following:
CACHE_BACKUP_DEVICE_FAILED-Recovery Failure Type Code: 251
Note: There can also be events in the RecoveryGURU indicating the cache is disabled or suspended. This is to be expected if the cache backup device is failed.