Users Guide

Rebuilding a Failed physical disk
Issue: Rebuilding a physical disk after one of them is in a failed state.
Corrective Action: If you have congured hot spares, the Shared PERC 8 card automatically tries to rebuild a physical disk that is in a
failed state. The automatic rebuild is not available if there is no hot spare with enough capacity to rebuild the failed
physical disk. You must make sure a physical disk with enough storage in the subsystem is set as a hot spare for
rebuilding the physical disk.
Foreign dedicated hot spare shown as global hot spare in
CMC’s foreign conguration preview before foreign
conguration import
Issue: When a drive assigned as a dedicated hot-spare becomes foreign, the preview of that drive in CMC GUI, under
Storage → Controller → Setup shows that the drive is Global Hot-spare.
Corrective Action: The foreign conguration can be imported and it is assigned as dedicated hot-spare to the array it was assigned.
NOTE: For more information on importing or clearing the foreign conguration, see Dell Chassis Management Controller for Dell
PowerEdge VRTX User’s Guide at Dell.com/poweredgemanuals.
Physical disk takes a long time to rebuild
Issue:
A physical disk is taking longer than expected to rebuild.
Description: A physical disk takes longer to rebuild when under high stress. There is only one rebuild I/O operation for every ve
host I/O operations.
Corrective Action: If possible, reduce stress on the physical disk.
SMART Errors
Self Monitoring and Reporting Technology (SMART) monitors the internal performance of all motors, heads, and physical disk electronics
and detects predictable physical disk failures.
NOTE
: For information about where to nd reports of SMART errors that can indicate hardware failure, see the Dell Chassis
Management Controller for Dell PowerEdge VRTX User’s Guide at dell.com/esmmanuals.
SMART error detected on a physical disk in a redundant virtual disk
Issue:
A SMART error is detected on a physical disk in a redundant virtual disk.
Corrective Action: Perform the following steps:
1 Back up your data.
2 Physically remove the physical disk that detected the SMART error.
NOTE: If a hot spare is present, the rebuild starts with the hot spare after the disk is removed.
3 Replace the disk with a new physical disk of equal or higher capacity.
54 Troubleshooting