If you will be running SAS on a cluster of servers in a grid-like fashion, then you need to determine if the various nodes within the cluster/grid need to share file systems in a read/write manner. If so, you will need to employ a Clustered File System for maximum IO bandwidth between the shared file systems and each node in the cluster. When provisioning shared or clustered file systems ensure the appropriate IO bandwidth required by the SAS workload is provided.