HP StorageWorks MPX200 Solution Manual page 171

Problem
The HP MPX200 router does not show masked
LUNs, and instead shows LUN 0 only with offline
status for an EMC CX array.
The HP MPX200 router tries to start a scheduled
job and shows a job in Pending state instead of
Running state.
While running a data migration job using a
Dell® EqualLogic™ storage array as the source,
the following may take a longer time (up to one
minute) to complete successfully:
• Refreshing the HP MPX200 Manager user
interface.
• Executing the show migration_luninfo
or show luninfo commands in the CLI
Migration job fails on an active-passive array,
even though the host I/O uses the same router
path.
Cause and Solution
Verify that the HP MPX200 router port is registered with the
storage system through the same storage controller port
through which it is trying to access the LUNs. If the HP
MPX200 router ports are registered with SPA-0 port, and
SPA-1 port is zoned with the HP MPX200 router ports on
the switch, the HP MPX200 router does not see any of the
assigned LUNs.
On presenting a data LUN for the first time, the router
considers it to be an array reconfiguration scenario, where
the data LUN replaces the controller LUN. To see the correct
LUN details, perform either of these options:
• In the CLI, issue the show luninfo command two or
three times.
• In the HP MPX200 Manager GUI, click Refresh two or
three times.
Make sure that the LUN state is online for both the source
and destination LUNs. Check if the zoning configuration is
valid and that the arrays are shown in an online state. If the
array state is online and the LUN state is offline, make sure
that the LUN presented to the HP MPX200 router at the time
of configuring the job has not been replaced by another
LUN at the time of starting the job. This is a case of recon-
figuration and the associated job needs to be deleted. For
more information, see "Reconfiguring LUNs on a storage
array" on page 153.
The commands for scanning LUNs from EqualLogic may
time out, causing a temporary connection loss. Wait approx-
imately one minute for the router to reconnect and continue
with the migration job.
For older active-passive arrays, a data migration job may
fail if the active path disappears from the router while host
I/Os are not active. To allow the router to discover new
paths, click the Refresh button a few times, and then recon-
figure the migration job. No migration licenses are con-
sumed when a job fails.
MPX200 Multifunction Router Data Migration 171