Providing LUN Access to a Server Cluster

Applies To: Windows Server 2008

With Storage Manager for SANs, you can provide logical unit number (LUN) access to a group of servers (a server cluster) in your storage area network (SAN). You create server clusters by defining them in Storage Manager for SANs and by installing Failover Clustering on each individual server that will be part of the cluster.


To prevent data loss, make sure that each server is a member of only one cluster and that Failover Clustering has been installed on each server in the cluster. For more information about installing Failover Clustering, see

To provide LUN access to a server cluster

  1. In the console tree, click LUN Management.

  2. In the Actions pane, click Manage Server Connections.

  3. In the Manage Server Connections dialog box, click Manage Clusters.

  4. In the Manage Clusters dialog box, click Add.

  5. In the Add New Cluster dialog box, type a name for the cluster and optionally, type a general description that will help you identify the cluster.

  6. From the server list, select all the servers that you want to include in the new cluster.


To add servers to a cluster, you must first add them to the server list in Manage Server Connections. For more information, see Task 1: Configure Server Connections earlier in this guide.

  1. Click OK to create the new cluster.

  2. Click OK again to go back to the Manage Server Connections dialog box.

    The new cluster will now be listed in the Manage Server Connections dialog box.

  3. To configure the connections of the cluster, configure the Fibre Channel ports or the Internet SCSI (iSCSI) initiator adapters of each individual server included in the cluster by selecting the server from the list. All of the configuration changes you make on the individual servers will take effect on the cluster.

  4. After server clusters are created, LUNs can be assigned to them in the same way they are assigned to individual servers.


If you are going to enable more than one connection (Fibre Channel ports and/or iSCSI initiator adapters) on a server in the cluster, and that server is not configured to use Multipath I/O, data corruption can occur. For more information about Multipath I/O, see Support for Multipath I/O earlier in this guide.