User Manual

Appendix
D-27
• Disk IO exception handling
Event ID
0x0818
Type
DISK
Severity
NOTICE
Parameters
Controller
ID, Disk ID
Message
Controller x detected CRC error on HDDy
Description
The controller x detected a CRC error when transferring data
with hddy. This could be a transient error due to unstable chan-
nel, electronic interference, heavy traffic, or malfunctioning hard
disks. The controller will invalidate the data and retry the com-
mand.
Advice
If this event occurs often, check the disk connectivity, check
power supply to disks, or replace with a new disk.
Event ID
0x0819
Type
DISK
Severity
NOTICE
Parameters
Controller
ID, Disk ID
Message
Controller x detected aborted task on HDDy
Description
The controller x aborted the command that hddy failed to
respond to controller in time. This could be a transient error due
to unstable channel, heavy traffic, or malfunctioning hard disks.
The controller will retry the command to complete the IO; how-
ever, this could result in performance drop of the disk.
Advice
If this event occurs often, check the disk connectivity, check
power supply to disks, or replace with a new disk.
Event ID
0x081a
Type
DISK
Severity
WARNING
Parameters
Controller
ID, Disk ID
Message
Controller x resets on HDDy
Description
The controller x resets hddy that failed to respond to controller in
time and forced the disk back to its initial state. This could be a
transient error due to unstable channel, heavy traffic, or malfunc-
tioning hard disks. The controller will resume normal access to the
disk after resetting the disk; however, this could result in perfor-
mance drop of the disk. If the disk cannot resume normal opera-
Advice
If this event occurs often, check the disk connectivity, check
power supply to disks, or replace with a new disk.