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Troubleshooting
To get help with your Dell Shared PowerEdge RAID Controller Shared (PERC) 8, you can contact your Dell Technical
Service representative or see dell.com/support.
Controller Boots Into Safe Mode
In the event of some failure conditions encountered at boot, Shared PERC 8 boots up with restricted capability in safe
mode without user intervention. In such a condition Shared PERC 8 reports all configured disk drives as Foreign to the
management application. The Dell Chassis Management Controller (CMC) displays events generated by the controller
indicating the reason for booting into safe mode. The following table details the conditions and the corresponding event
notifications that are reported to the CMC.
Table 3. Conditions and the Corresponding Event Notifications Reported to the CMC
Category
Event Reported To the CMC
Pinned Cache Controller cache pinned
for missing or offline
VDs: %s
SAS
Controller booted to safe
mode due to critical
Discovery
errors Critical Error
during boot - On-board
expander FW or mfg image
is corrupted - reflash
image
Critical Error during
boot - NVDATA image is
invalid - reflash NVDATA
image
Degraded State Of Virtual Disks
A redundant virtual disk is in a degraded state when one or more physical disks have failed or are inaccessible. For
example, if a RAID 1 virtual disk consists of two physical disks and one of them fails or become inaccessible, the virtual
disk become degraded.
To recover a virtual disk from a degraded state, you must replace the failed physical disk and rebuild it. After the
rebuilding process is complete, the virtual disk state changes from degraded to optimal.
Description of the Failure
The controller preserves
dirty cache for a virtual disk
that transitioned to offline or
was deleted due to missing
physical disks.
This issue occurs if
expanders are not detected.
The NVData image is invalid. Contact Dell Technical
Corrective Action
The preserved cache can be
restored to the virtual disk
once the original drives are
inserted and the foreign
configuration is imported.
See your system specific
Owner's Manual for the
correct configuration.
Support.
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