5. Troubleshooting
Express5800/R120e-1M, R120e-2M Maintenance Guide
36
Chapter 1 Maintenance
5.6
When Operating a RAID System
[?]
Unable to rebuild Hard Disk Drive
Is the capacity of the Hard Disk Drive to be rebuilt enough?
→
Use a Hard Disk Drive with the same capacity as that of the faulty Hard Disk Drive.
Is the Logical Drive RAID0?
→
RAID0 cannot be rebuilt because it has no redundancy. Replace the failed Hard Disk Drive, recreate the
configuration information, initialize it, and recover the drive using backup data.
[?]
Fails to automatically rebuild the Hard Disk Drive
Did you secure sufficient time for replacing the Hard Disk Drive (hot swap)?
→
To make auto-rebuild work, secure at least 90 seconds from when a Hard Disk Drive is removed to
when the drive is installed.
[?]
The Hard Disk Drive failed
→
Contact the maintenance service company with which you signed up or the dealer where you purchased
the product.
[?]
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 therefore, Consistency Check is disabled in the RAID0
configuration.
[?]
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
.
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.
