HP StorageWorks XP12000 User Manual page 111

Table 12 General External Storage XP troubleshooting (continued)
Error
The Discovery operation
cannot be performed.
The external LU is blocked.
The Check Paths & Restore
Vol. command has executed
and you have waited more
than 10 minutes, but the
device's status does not
change from Checking.
The Disconnect Subsystem or
Disconnect Volume command
has executed, but the
progress status information is
not updated.
Corrective action
Backoff
Correct the error and retry the operation.
The source of the error could be one of the following:
• Command View XP or XP Remote Web Console is not in Modify mode.
• The local array port and external array port are not connected using FC
cables.
• Port security is improperly set on the external array.
• The status of the device in the external array is not Normal.
• The external array is not connected to a local array port set to External.
• The external LUN of the local array does not have a status of Normal.
• The external LU capacity is insufficient (less than 46.86 MB).
• The cable to the switch is not properly connected.
• The zoning for the switch is not set properly.
If none of these correct the problem, disconnect and then reconnect the cable
between the local array and external array. After 30 seconds, retry the
operation.
Correct the error and retry the operation.
The source of the error could be any one of the following:
• All set paths are blockaded (or not connected).
• The external LU's attribute is not set to Read/Write.
• The external LU is blockaded by an error.
Click Refresh ( ) on the Command View XP or XP Remote Web Console pane
to update the displayed information. If the device status remains Checking, even
though you updated the information, execute the Check Paths & Restore Vol.
command again.
If the problem persists despite retrying, contact your HP account support
representative.
Click Refresh ( ) on the Command View XP or XP Remote Web Console pane
to update the displayed information. If the progress information for the Cache
Destage status is not updated, even though you updated the information contact
your HP account support representative.
NOTE: The time required to write of data from cache to the external LU
(destaging processing) depends on the volume capacity (more time is required for
a larger volume than a smaller one). The processing speed is about 20 MB/s.
However, processing speed depends on the external array's performance and
status.
Status: The reply from the external array was
Backoff. The path status is Waiting for Recovery
because a temporary error occurred in the external
array's volume. Even if the primary path's status
becomes Backoff, the primary path does not change
to the alternate path immediately. After error
recovery, the status becomes Normal.
Corrective action: If you cannot recover the status
from the error, the path status changes to another
status. Take the corrective action for the new path
status. If you cannot restore the path, contact your
HP account support representative.
External Storage XP user guide 111