Specifications

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Cisco SN 5428-2 Storage Router Software Configuration Guide
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Chapter 10 Configuring a High Availability Cluster
Changing Clusters
Changing Clusters
In some situations, you may need to move a storage router from one cluster to another cluster. Moving
a fully configured storage router from one cluster to another is more complex than simply adding it to a
cluster. Advanced planning is required.
To successfully move a storage router from one cluster to another, perform the following steps:
Step 1 Verify that the storage router to be moved has the same hardware configuration as the other storage router
in the cluster you are planning to join. Each node in the cluster must have connectivity to the same IP
hosts and Fibre Channel storage. All management interfaces and all HA interfaces for the storage routers
within a cluster must be on the same IP subnet; however, the management interfaces must be on a
different IP network than the HA interfaces.
Step 2 Decide if you need to retain any of the SCSI routing instances that are configured on the storage router
joining the cluster. Retaining data means all SCSI routing instances existing on the storage router joining
the cluster will be added to those already configured for the cluster. If the existing instances are not
retained, they are deleted.
Step 3 If you are going to retain data, determine if you have any duplicate SCSI routing instance names. When
a storage router is added to the cluster, the data in the cluster will overwrite the existing data. You may
prefer to change the configuration in the storage router before it joins the cluster to prevent this situation.
Step 4 If you are going to retain data, determine if you need to save existing access list information, or other
cluster elements (such as VLANs or AAA configuration). Cluster elements are not retained. Any access
lists, VLANs or AAA configuration on the storage router will be discarded when it joins the new cluster.
The storage router will also learn Administrator mode and Monitor mode passwords from the cluster.
You can save cluster elements, such as access list information, and then restore them to the cluster.
Cluster element information can be restored before or after the storage router joins the cluster by
transferring the saved configuration file to the first storage router in the cluster and performing the
appropriate restore functions.
Note Restoring AAA or VLAN information overwrites any existing information. You may prefer to simply
make the appropriate configuration modifications to the storage router currently in the cluster before
adding the new member.
Step 5 Use the setup cluster configuration wizard to join the new cluster. Respond to the prompts to retain or
delete configuration as required. The storage router automatically reboots at the end of the configuration
wizard.
Step 6 Perform any additional configuration that may be needed. For example, you can fail over SCSI routing
instances to this new cluster member to balance traffic load between all storage routers in the cluster.
Step 7 After making configuration changes, use the save all command with the bootconfig keyword to copy
and save the storage router configuration, thereby updating the cluster.