This article can also be found in the Premium Editorial Download "Storage magazine: Who owns storage in your organization?."
Download it now to read this article plus other related content.
Emerging business needs such as off-site disaster recovery, storage consolidation and better sharing of existing resources are driving the impetus to keep SANs logically separate while physically connected. Storage routing products such as Cisco System Inc.'s SN 5428, Computer Network Technology Corp.'s UltraNet Edge, Crossroads Systems' 10000 and McData Corp.'s IPS 3300 enable users to choose between FC, FCIP, iFCP, IP, iSCSI and SCSI protocols to connect their existing storage islands to one central SAN.
The Virtual SAN (VSAN) technology offered in Cisco's MDS 9000 series of directors lets users partition SAN traffic. Brocade Communication Systems' Logical Storage Area Networks (LSANs) technology offers similar functionality; the SilkWorm Multiprotocol switch (AP7420) connects multiple fabrics without merging them (see "VSAN implementations"). McData's new DS10000 directors allow users to segregate functions within a SAN using hard partitioning.
This was first published in May 2004