R/Evolution 2000 Series, Troubleshooting Manual

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112 R/Evolution 2000 Series Troubleshooting Guide • May 2008
Clearing Metadata From a Disk Drive
All of the member disk drives in a virtual disk contain metadata in the first sectors.
The storage system uses the metadata to identify virtual disk members after
restarting or replacing enclosures.
Clear the metadata if you have a disk drive that was previously a member of a
virtual disk. Disk drives in this state display “Leftover” in the Display All Devices
page and in the Clear Metadata page. After you clear the metadata, you can use the
disk drive in a virtual disk or as a spare.
To clear metadata from a disk drive, see “Clearing Metadata From Leftover Disk
Drives” on page 39.
Identifying Power-and-Cooling Module Faults
When isolating faults in the power-and-cooling module, it is important to remember
that the module consists of two primary components: fans and a power supply.
When ether of these components fails, RAIDar provides notification, the faults are
recorded in the event log, and the power-and-cooling module’s status LED changes
from green to yellow. Alternatively, you can use the CLI to poll for events; see the
CLI reference guide .
Note – When a power supply fails, the fans of the module continue to operate
because they draw power from the power bus located on the midplane.
Once a fault is identified in the power-and-cooling module, you need to replace the
entire module.
Mixed drive type errors • Virtual disks do not support mixed drive types.
• Verify that the drives in the virtual disk are of the same type
(SATA or SAS) and that they have the same capacity. If you
attempt to build a virtual disk with mixed drive types you will
receive an error.
• If you attempt to build a virtual disk with various sized disk
drives, a warning will be displayed. The capacity of the smallest
disk will be set for all others.
Table 7-6 Virtual Disk Faults (Continued)
Problem Solution