NEC EXP803 Maintenance Manual page 35

Chapter 1 Maintenance
[?] Unable to automatically rebuild the RAID array
 Did you wait for sufficient time until the hard disk drive was replaced?
→
Follow the steps below to use the auto-rebuilding feature.
(1) Remove a failure HDD.
(2) Wait for at least 90 seconds.
(3) Install a new HDD.
[?] The hard disk drive failed
→
Contact your sales representative.
[?] Unable to perform Consistency Check
 Is the logical drive Critical or Degraded?
→
Replace the failed hard disk drive with new one, and then perform Rebuild.
 Is the logical drive RAID0?
→
RAID0 has no data redundancy and Consistency Check is disabled in the RAID0 array.
[?] 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.
Refer to Universal RAID Utility User's Guide for details of cache mode.
Indication of
Reason for Diff in Write
BBU not installed
BBU is failed
BBU is discharged
BBU in re-learn cycle
Reconstruction
If the battery is not found in spite of actions taken, the battery may be faulty.
Consult with your sales representative.
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 found if it is insufficiently charged. If the battery
is not found even after 24 hours have elapsed, restart the server.
Displayed when battery is failed.
Contact your sales representative.
Displayed when battery voltage is low.
Check the cache mode (current value) about 12 hours later.
Displayed when battery is being refreshed.
Check cache mode (current value) about 12 hours later.
Displayed when battery is being reconstructed.
Check cache mode (current value) after reconstruction completes.
Express5800/R120f-1E Maintenance Guide
Action
5. Troubleshooting
35