Traditional volumes have been around as long as we have had file systems, but now may be the time to pronounce the end of the storage volume. There are just too many volumes of drives to be managed effectively. Companies like 3PAR, Compellent and ZFS based products like Nexenta are trying to break the volume based model to a pooled storage approach. The storage system will make decisions on what data should go where automatically. Given the stack of virtual machines, physical hosts, SAN, Volumes and LUNs, the data center now deals with the classic model has become almost unmanageable.”]
Source: https://www.darkreading.com/database-security/the-end-of-the-storage-volume