User's Manual

294 Troubleshooting
Alerts 2146 through 2150 Received while Performing I/O, Consistency Check,
Format, or Other Operation
If you receive alerts 2146 through 2150 while performing an operation other
than a rebuild, you should replace the damaged disk immediately to avoid
data loss.
Do the following:
1
Back up the degraded virtual disk to a fresh (unused) tape.
2 Replace the damaged disk.
3 Do a rebuild.
Read and Write Operations Experience Problems
If the system is hanging, timing out, or experiencing other problems with read
and write operations, then there may be a problem with the controller cables
or a device. For more information, see Cables Attached Correctly and Isolate
Hardware Problems.
I/O Stops When a Redundant Channel Fails
If you have implemented channel redundancy on a PERC 4/SC, 4/DC,
4e/DC, or 4/Di controller, a failure of one channel causes I/O to stop on the
other channels included in the channel-redundant configuration. To resolve
this issue, see Channel Redundancy on PERC 4/DC, 4e/DC, 4/Di, and 4e/Di
Controllers.
A Task Menu Option is Not Displayed
You may notice that the task menus do not always display the same task
options. This is because Storage Management only displays those tasks that
are valid at the time the menu is displayed. Some tasks are only valid for
certain types of objects or at certain times. For example, a Check Consistency
task can only be performed on a redundant virtual disk. Similarly, if a disk is
already offline, the Offline task option is not displayed.
There may be other reasons why a task cannot be run at a certain time. For
example, there may already be a task running on the object that must
complete before additional tasks can be run.