In a SAN environment, it is important to protect storage so that it cannot be accessed by more than one host at a time. SFW provides the feature of private dynamic disk group protection that protects a disk group with a SCSI reservation so that other hosts cannot access the data. For more information on this feature, see the Storage Foundation Administrator's Guide.

Clustering is another way to protect the storage in a SAN. It also uses a SCSI reservation to keep the disk group from being accessed by other hosts in a SAN.