HP StorageWorks IP Storage Router - Manual (Page 193)

Maintaining and Managing the Storage Router
193 IP Storage Router SR2122-2 User Guide
Note: Because there are only two storage routers in the cluster, you do not need to
specify the failover destination.
4. show cluster or show scsirouter scsi1 stats —
Verify that the specified SCSI routing instance,
scsi1, is no longer running on
the storage router,
StorageRouterSys1.
Once the failover is complete, establish a Telnet session to
StorageRouterSys2 and
verify — using CLI commands described in Step 1 and Step 2 above — that the
SCSI routing instance,
scsi1, is now running on that storage router.
This is considered a temporary move because
StorageRouterSys1 is still
designated as the primary storage router for the SCSI routing instance,
scsi1. If,
for example,
StorageRouterSys1 is rebooted, scsi1 will stop running on
StorageRouterSys2 and will start up and run on StorageRouterSys1.
Note: Use caution if you change the configuration of a SCSI routing instance while it is
running on the storage router that is not the instance’s configured primary storage
router. If the instance’s configuration changes while the designated primary storage
router for that instance is down (or otherwise removed from the cluster), the changes
will not be propagated to that storage router. When the primary storage router reboots
(or otherwise returns to the cluster), it will reassert itself as the primary and will start to
run the instance using the last configuration it had before leaving the cluster.
Failover as Permanent Move
Referring to the example cluster scenario previously described, the following
procedure moves the SCSI routing instance,
scsi2, from its primary, or preferred,
storage router,
StorageRouterSys1, to the other storage router on a permanent
basis. The commands in this procedure are issued from a CLI session from storage
router,
StorageRouterSys1.
1. enable — Enter Administrator mode.
2. show cluster or show scsirouter scsi2 stats — Verify
that the instance to be moved,
scsi2, is indeed running on storage router,
StorageRouterSys1.
3. scsirouter scsi2 primary StorageRouterSys2
— Set
StorageRouterSys2 as the primary storage router for the desired SCSI routing
instance,
scsi2.