Dell PowerEdge RAID Controller 6E User Manual

Page 124

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124

Troubleshooting

Rebuilding a physical
disk after one of them is
in a failed state.

If you have configured hot spares, the PERC 6 controller
automatically tries to use one of them to rebuild a physical
disk that is in a failed state. Manual rebuild is necessary if
no hot spares with enough capacity to rebuild the failed
physical disks are available. You must insert a physical disk
with enough storage in 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.

For information on rebuilding a single physical disk, see
"Performing a Manual Rebuild of an Individual Physical
Disk" on page 108.

A virtual disk fails during
rebuild while using a
global hot spare.

The global hot spare goes back to Hotspare state and the
virtual disk goes to Failed state.

A virtual disk fails during
rebuild while using a
dedicated hot spare.

The dedicated hot spare goes to Ready state and the virtual
disk goes to Failed state.

A physical disk fails
during a reconstruction
process on a redundant
virtual disk that has a
hot spare.

The rebuild operation for the inaccessible physical disk
starts automatically after the reconstruction is completed.

A physical disk is taking
longer than expected to
rebuild.

A physical disk takes longer to rebuild when under high
stress. For example, there is one rebuild I/O operation for
every five host I/O operations.

You cannot add a second
virtual disk to a disk
group while the virtual
disk in that disk group is
undergoing a rebuild

The firmware does not allow you to create a virtual disk
using the free space available in a disk group if a physical
disk in a virtual disk group is undergoing a rebuild
operation.

Table 7-5.

Physical Disk Failure and Rebuild Issues (continued)

Issue