•The shared storage systems and firmware must be identical. Using dissimilar storage systems and firmware for your shared storage is not supported.
•MSCS is limited to 22 drive letters. Because drive letters A through D are reserved for local disks, a maximum of 22 drive letters (E to Z) can be used for your storage system disks.
•Windows Server 2003 and 2008 support mount points, allowing greater than 22 drives per cluster.
For more information, see "Assigning Drive Letters and Mount Points" section of Dell Failover Clusters with Microsoft Windows Server 2003 Installation and Troubleshooting Guide or Dell Failover Clusters with Microsoft Windows Server 2008 Installation and Troubleshooting Guide on the Dell Support website at support.dell.com/manuals.
Figure 2-11 provides an example of cabling the cluster nodes to four Dell/EMC storage systems.
Figure 2-11. PowerEdge Cluster Nodes Cabled to Four Storage Systems
cluster node
private network
Fibre Channel switch
cluster node
Fibre Channel switch
storage systems (4)
Cabling Your Cluster Hardware
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