HP A3550A - High Availability Disk Arrays Model 20 Storage Enclosure User Manual page 296

Table 6-11 Fatal Error Codes
Event
code Event code name
0xA02 Failed SCSI Bus
0xA05 NOVRAM Uninitialized
0xA06 Chassis Shutdown
0xA07 Drive Failure
0xA08 Data Base Sync Error
0xA09 Drive Too Small
0xA11 Peer Controller Removed This SP's peer is no longer responding to this SP's queries
0xA12 Cache Memory Hard
Error
0xA13 CRU Type Unsupported
Bound but Unassigned Problems
6-48 Unsolicited Event Log
Description
An internal SCSI bus failed and all disk modules on that bus
are inaccessible by the SP. The CRU number displayed
corresponds to the bus number. The failure resulted from a
bad cable or cable connection, bad terminator, bad SCSI chip
on an SP or a bad device.
The nonvolatile memory on this SP is uninitialized. The SP
has reinitialized the memory to its default state, but the SP
must be rebooted to be operational.
An overtemperature situation could not be corrected. All disk
modules in the chassis will be shut down. The problem must
be corrected before powering up again.
The disk drive has failed and can no longer be accessed.
The SP cannot determine the correct logical configuration of
all units in this disk array. Some units may be unusable.
A replacement drive, which does not have adequate capacity
for a rebuild operation to begin, has been inserted.
following a period of time when the peer was known present.
This SP, which is operating in nonmirrored caching mode, has
detected an unrecoverable memory fault in its cache memory
area. This error does not apply to a disk array with two SPs.
This type of disk module is not supported by the SP
microcode. The disk module cannot be bound or used for host
I/Os.