5. Troubleshooting
Express5800/E120f-M Maintenance Guide
36
Chapter 1 Maintenance
[?]
Cannot set Write-Back for Cache Mode
→
The current cache mode of RAID Controller is displayed on
Virtual Disks
→
Properties
→
Policies
→
Write
of Off-line Utility.
If an extra battery is faulty, is not connected, or insufficiently charged, the Cache Mode is changed to
WThru
(
Write Through
) even if you specify
WBack
(
Write Back
).
See
Chapter 2 (5. RAID System Configuration)
for details of cache mode.
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.
If the battery is not detected in spite of actions taken, the battery may be faulty.
Consult with your sales representative.
[?]
Additional battery is not recognized 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 just after the battery is connected?
→
If the battery charging status is low, the battery may not be recognized. If the battery is not recognized
although 24 hours has passed, restart the system once.
If the battery is not recognized although the above action has been taken, the additional battery may be
faulty. Contact the maintenance service company with which you signed up or the dealer where you
purchased the product.
