Dell PowerEdge RAID Controller 6i User Manual

Page 122

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122

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 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
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 107 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.

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 in the disk group is undergoing a rebuild
operation.

Table 7-5.

Physical Disk Failure and Rebuild Issues (continued)

Issue