Check Storage Subsystem Connectivity; Check Enhanced Remote Mirroring Status; Clear Enhanced Global Mirroring Fault - IBM System Storage DS3000 Programming Manual

Check storage subsystem connectivity

This command verifies that the local storage subsystem and the remote storage subsystem have a
communication path and displays the connection details between the local and remote storage subsystem.
Before creating an Enhanced Global Mirror Group, you should check whether the local storage subsystem
and the remote storage subsystem can communicate with each other. When you execute this command,
the system queries for the remote storage subsystem on all eligible host ports to determine what ports are
connected to the remote storage subsystem. The result of the test is a list of all ports on the local storage
subsystem along with a list of the remote storage subsystem port addresses accessible through that port.
Note: Connectivity is tested using all possible channels, and if it is a dual controller configuration,
connectivity is checked from each controller. It might take up to 20 minutes to check connectivity
between two storage subsystems.
Syntax
check storagesubsystem connectivity
(remoteStoragesubsystemName="storagesubsystemName" |
remoteStoragesubsystemWwid=<wwID>
Parameters
None

Check Enhanced Remote Mirroring status

.
This command returns the status of a remote-mirror logical drive. Use this command to determine when
the status of the remote-mirror logical drive status changes to Optimal.
Note: In previous versions of this command the feature identifier was remoteMirror. This feature
identifier is no longer valid and is replaced by syncMirror.
Syntax
check syncMirror locallogicalDrive [logicalDriveName]
optimalStatus timeout=timeoutValue
Parameters
None

Clear Enhanced Global Mirroring fault

This command clears an Enhanced Global Mirroring "sticky" fault from one or more Enhanced Global
Mirror Groups and one or more Enhanced Global Mirror Group member logical drives. An Enhanced
Global Mirror Group and its member logical drives can encounter Enhanced Global Mirroring "sticky"
faults, which occur at a single point-in-time but do not impact the functionality of the mirrors. These type
of faults must be reviewed, but may not require any changes to the configuration. An Enhanced Global
Mirror Group and its member logical drives might or can have more than one associated sticky fault.
This command clears all of the faults associated with the Enhanced Global Mirror Group and its member
logical drive. However, if an Enhanced Global Mirror Group has a fault and one of its member logical
drives has a fault, clearing the fault on the Enhanced Global Mirror Group does not clear the fault on its
member logical drive.
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IBM System Storage DS3000, DS4000, and DS5000: Command Line Interface and Script Commands Programming Guide