5. Troubleshooting
Express5800/R120g-1M, R120g-2M Maintenance Guide
36
Chapter 1 Maintenance
[?]
Cannot set Write-Back for Cache Mode
→
On
Virtual Disks
–
Properties
–
Policies
screen of Web BIOS,
Default Write
shows set value of cache
mode of RAID controller, and
Current Write
shows the current write policy. Accordingly, if battery is not
connected, failed, or insufficiently charged, indication of
Current Write
changes to
Write Through
even
if you specify
Write Back with BBU
for
Default Write
. See
Universal RAID User’s Guide
.
Indication of
Reason for Diff in Write
Action
BBU not installed
Displayed when battery is disconnected.
(1) Check if battery control cable (cable used to connect RAID controller with
battery) is properly connected.
→
Connect cable properly.
(2) Is it displayed immediately after the battery was connected?
→
The battery may not be detected if it is insufficiently charged. If the
battery is not detected even after 24 hours have elapsed, restart the
server.
BBU is failed
Displayed when battery is failed.
Contact your sales representative.
BBU is discharged
Displayed when battery voltage is low.
Check the cache mode (current value) about 12 hours later.
BBU in re-learn cycle
Displayed when battery is being refreshed.
Check cache mode (current value) about 12 hours later.
Reconstruction
Displayed when battery is being reconstructed.
Check cache mode (current value) after reconstruction completes.
[?]
Additional battery is not found or the following message is displayed in POST
The battery hardware is missing or malfunctioning,
or the battery is unplugged, or the battery could be
fully discharged. If you continue to boot the system,
the battery-backed cache will not function.
If battery is connected and has been allowed to charge
for 30 minutes and this message continues to appear,
then contact technical support for assistance.
Press ‘D’ to disable this warning (if your controller
does not have a battery.
Are the cable between the battery pack and battery board and the control cable between the battery board
and battery connector connected correctly?
→
Connect the cables correctly.
Is this message displayed after the battery is connected?
→
If the battery charging status is low, the battery is not found. If the battery is not found although 24 hours
has passed, restart the system once. If the battery is not found although the above action has been
taken, replace the battery.
