Maintenance Manual

5. Troubleshooting
Express5800/R120d-1M, R120d-2M Maintenance Guide
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Chapter 1 Maintenance
5.5
When STOP Error Occurs
[?] Cannot turn the power OFF at the blue screen (STOP error screen)
→ If you want to turn off the power at the blue screen, execute forced shutdown (continue to press the
power switch for 4 seconds). If you press the switch briefly instead of holding it, the server will not power
off.
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.