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
Joining Stand-alone Storage Routers in a Cluster
Joining Stand-alone Storage Routers in a Cluster
In some cases you may prefer to completely configure both storage routers (including SCSI routing
instances and access lists) as stand-alone systems before joining them into a cluster.
The following example explains the steps required to create a cluster named Cluster1, composed of two
SN 5428-2s named Sys1 and Sys2. This example assumes that both SN 5428-2s are fully configured with
SCSI routing instances and access lists. Use the scsirouter primary command to assign a preferred
storage router to any or all of the SCSI routing instances, if desired. See Chapter 6, “Configuring SCSI
Routing,” for more information about configuring SCSI routing instances.
To create a cluster from fully configured SN 5428-2s, perform the following steps:
Step 1 Use the setup cluster configuration wizard to define Sys1 as a member of the cluster Cluster1. When
prompted, enter retain to keep the access list and SCSI routing instance information already defined.
Step 2 Use the show cluster command to verify the cluster name after Sys1 reboots. Verify that all instances
and access lists are still available, using show scsirouter and show accesslist commands.
Step 3 (Optional) When Sys2 joins Cluster1, all cluster elements (access lists, VLANs, passwords and AAA
settings) currently configured on Sys2 will be deleted. If you want to make any of the cluster elements
currently configured on Sys2 available to the cluster, use the appropriate save command to save the
elements to a file. For example, to make any of the access lists currently configured on Sys2 available to
the cluster, use the save accesslist command to save the access lists to a file. The following command
saves all access lists to a file named Sys2_AccessLists:
[Sys2] save accesslist all Sys2_AccessLists
Step 4 (Optional) Because cluster elements can only be manipulated from the first storage router in a cluster,
the saved configuration file(s) from Sys2 must be made available to Sys1. See Chapter 11, “Maintaining
and Managing the SN 5428-2 Storage Router,” for more information about managing saved
configuration files using either the copy savedconfig command or FTP.
Step 5 Join Sys2 to the new cluster named Cluster1, using the setup cluster configuration wizard. When
prompted, enter retain to share the existing SCSI routing instances across the cluster.
Step 6 Use the show cluster command to verify the cluster name after Sys2 reboots. Verify that the defined
SCSI routing instances were retained, using show scsirouter command.
Step 7 (Optional) Restore the cluster elements (such as access lists) saved in Step 3 using the appropriate
restore from command. Cluster elements can only be manipulated from the first storage router in a
cluster, so these commands must be issued from the system Sys1. For example, to restore all access lists
from the configuration file named Sys2_AccessLists saved in Step 3:
[Sys1] restore accesslist all from Sys2_AccessLists
Note Restoring AAA or VLAN information overwrites any existing information. You may prefer to make the
configuration modifications to the storage router currently in the cluster before adding the new member.
Step 8 (Optional) Save all configuration information on system Sys1 by issuing a save all bootconfig
command, which updates the bootable configuration of all storage routers in the cluster with the saved
cluster configuration elements.
Step 9 Verify that all SCSI routing instances are active using the show scsirouter stats command on both
storage routers.