Dell PowerEdge RAID Controller 5i - Manual (Page 75)

Troubleshooting
73
Physical Disk Failures and Rebuilds
Table 6-3 describes issues related to physical disk failures and rebuilds.
Table 6-3. Physical Disk Failure and Rebuild Issues
Issue Suggested Solution
Rebuilding a physical disk
after one of them is in an
inaccessible state. If you have configured hot spares, the PERC 5 controller automatically tries to use
one to rebuild a physical disk that is in an inaccessible state. Manual rebuild is
necessary if no hot spares with enough capacity to rebuild the inaccessible physical
disks are available. You must insert a physical disk with enough storage into the
subsystem before rebuilding the physical disk. You can use the BIOS Configuration
Utility or Dell OpenManage™ Storage Management application to perform a
manual rebuild of an individual physical disk.
See the section "Performing a Manual Rebuild of an Individual Physical Disk" on
page 67 in "RAID Configuration and Management" on page 49 for procedures to
rebuild a single physical disk.
Rebuilding the physical disks
after multiple disks become
simultaneously inaccessible. Multiple physical disk errors in a single array typically indicate a failure in cabling
or connection and could involve the loss of data. It is possible to recover the virtual
disk after multiple physical disks become simultaneously inaccessible. Perform the
following steps to recover the virtual disk.
1 Turn off the system, check cable connections, and reseat physical disks.
Follow the safety precautions to prevent electrostatic discharge.
Ensure that all the drives are present in the enclosure.
2 Power up the system and enter into the CTRL-R utility and import the foreign
configuration.
If the VD is redundant and transitioned into DEGRADED state before going
OFFLINE a rebuild operation starts automatically after the configuration is
imported. If the VD has gone directly into the OFFLINE state due to a cable pull
or power loss situation the VD will be imported in its OPTIMAL state without a
rebuild occurring.
You can use the BIOS Configuration Utility or Dell OpenManage Storage
Management application to perform a manual rebuild of multiple physical disks.
See the section "Performing a Manual Rebuild of an Individual Physical Disk" on
page 67 in "RAID Configuration and Management" on page 49 for procedures to
rebuild a single physical disk.
A virtual disk fails during
rebuild while using a global
hot spare. The global hot spare goes back into HOTSPARE state and the virtual disk goes
into FAIL state.
A virtual disk fails during
rebuild while using a dedicated
hot spare. The dedicated hot spare goes into READY state and the virtual disk goes into
FAIL state.
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