Preparing Your Systems for Clustering 53Updating a Dell/EMC Storage System forClusteringIf you are updating an existing Dell/EMC storage system to meet the clusterrequirements for the shared storage subsystem, you may need to installadditional Fibre Channel disk drives in the shared storage system. The sizeand number of drives you add depend on the RAID level you want to use andthe number of Fibre Channel disk drives currently in your system.See your storage system's documentation for information on installing FibreChannel disk drives in your storage system.Upgrade the core software version that is running on the storage system orenable Access Control. For specific version requirements, see the Dell ClusterConfiguration Support Matrix on the Dell High Availability website atwww.dell.com/ha.Installing and Configuring a Failover ClusterAfter you have established the private and public networks and have assignedthe shared disks from the storage array to the cluster nodes, you can configurethe operating system services on your Dell Failover Cluster. The procedure toconfigure the Failover Cluster depends on the version of the Windows Serveroperating system that is running on the system.For more information on deploying your cluster with Windows Server 2003operating systems, see the Dell Failover Clusters with Microsoft WindowsServer 2003 Installation and Troubleshooting Guide located on the Dell Supportwebsite at support.dell.com.For more information on deploying your cluster with Windows Server 2008operating systems, see the Dell Failover Clusters with Microsoft WindowsServer 2008 Installation and Troubleshooting Guide located on the Dell Supportwebsite at support.dell.com.