User`s guide

ISR654606-00 A A-1
A Troubleshooting
Table A-1 lists some problems that may occur with the data migration service and
provides a possible reason or solution for each.
Table A-1. Troubleshooting
Problem Reason and Solution
The show array command does not show
any array entities.
Ensure that the zoning is correctly set up on the
switches.
Ensure that the show targets command is not
showing any entry for the array. If show targets is
showing an entry for the target array, it means that the
MPX200 is zoned correctly, but no data LUNs are
mapped to the MPX200 ports. Add masking for the
required data LUNs so that they are seen by the
MPX200, and then run the target rescan com-
mand. (For more information, see “show targets” on
page 5-54 and “target rescan” on page 5-56.)
The migration add command does not
show any source or destination array.
By default, the target type attribute for an array is
Unknown. Use the set array command to set it
appropriately.
The migration add command fails to start a
job.
Verify that the arrays are still visible and online.
Setting the array bandwidth does not cause
any change in the data transfer rate in show
perf output.
Array bandwidth is a “source-only” feature. Make sure
that the bandwidth setting has been configured on the
array that contains the source LUN. If the setting is
configured on the array holding the destination LUN,
no effect is seen.
Migration failover to active path does not
occur.
Ensure that both the MPX200 ports are correctly
masked for the LUN under consideration, and that both
controllers are correctly zoned with both the MPX200
Fibre Channel ports.