NEC Express5800/T120a-E N8100-1531F, User Manual, Page: 329 / 542

Troubleshooting 8-39
Event ID508:
When the RAID controller has additional battery (N8103-123 or N8103-124), the
following message is registered in RAID log in Universal RAID Utility and OS log (Event
Log or Windows, syslog of Linux).
Source: Raidsrv
Event ID: 508 (800001FC)
Type: Warning
Description: <RU0508> [CTRL: RAID controller number] The battery status is unstable.
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Wait for about 15 minutes, then check the cache mode of the RAID controller. If the
current cache mode is set to "Write Back", it is not a problem in operating the system.
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If the current cache mode is set to "Write Through", the battery need to be
refreshed. Contact your service representative.
If "Write Through" is retained even after 9 hours from start of refresh operation,
the battery may be faulty. Replace the battery.
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Is battery connected immediately before?
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This event may be logged until the refresh operation of battery is completed.
Access LED flashes:
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Access LED flashes frequently even while the hard disk drive is not accessed.
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The Access LED flashes if Patrol Read is running. With SATA hard disk drive, the
LED may stay on.