The core SANsymphony product and many of its optional functions are layered as a network storage facility between storage consumers and storage devices. Logically and administratively, all SANsymphony-managed capacity appears to come from a centrally controlled resource pool equipped with enhanced attributes. In reality, the actual disk space may be distributed among several dissimilar arrays potentially located across separate sites. Physical disks and the LUNs presented by intelligent arrays may be carved into smaller virtual volumes or concatenated into larger ones.