OnStor Inc.s OnStor 2260 NAS Gateway is a powerful appliance that lets IT managers grant their clients and servers file share access to SAN resources. In eWEEK Labs tests, we were impressed with the gateways extensive clustering capabilities and level of scalability. We believe this enterprise-class network-attached storage solution would be suitable for storage chores in almost any large enterprise. The high-performance OnStor 2260 NAS Gateway, which shipped in January, costs $55,500 for a single gateway.The unit we tested included four Gigabit Ethernet ports (for NAS access) and two 2G-bps Fibre Channel ports to connect to Fibre Channel storage units. Two other Gigabit Ethernet ports are included for management and to provide a cluster heartbeat between units.OnStor also sells lower-end NAS Gateway appliances, starting at $20,000, that have less memory and fewer ports. The OnStor 2200 has 2GB of ECC (error-correcting code) memory; and the OnStor 2400 includes 4GB of cache. As with competing NAS gateways, such as Network Appliance Inc.s gFiler, the OnStor 2260 NAS Gateway sits between Fibre Channel storage units and the IP network. The OnStor 2260 NAS Gateway takes control of LUNs (logical unit numbers) on the Fibre Channel SAN (storage area network) and creates shared volumes for them. The appliance then enables sharing via a CIFS (Common Internet File System) and NFS (Network File System). A single OnStor 2260 can create and host as many as 255 virtual servers, which allows IT managers to maintain security integrity, even though the underlying storage is shared at the SAN level. The gateways ability to spawn multiple virtual servers lets IT managers consolidate NAS servers. Instead of juggling multiple NAS units, each with its own attached storage, IT managers can purchase a single storage infrastructure and use the virtual servers to share the storage resources. This consolidation is far easier to maintain and will greatly increase storage useshared resources can do a better storage job with fewer boxes. In addition, the OnStor 2260s dynamic volume management, which automatically expands volumes when they are close to full capacity, should make daily storage management easier. To read more about new products that are teaching NAS gateways and network file servers new tricks to maximize storage capacity, click here. A clustered pair of OnStor 2260 NAS Gateways can support as many as 400 file systems, and each file system can scale to 100TB in size. Unlike other gateway systems, including gFiler, the OnStor 2260 can support heterogeneous storage unitsback-end storage devices dont have to be identical. In the case of gFiler, SAN storage units cannot be mixed and matched. This is a serious limitation, one that we hope Network Appliance addresses in the near future. Because SAN units cannot be mixed, companies must purchase a separate gFiler for each SAN storage family. Next page: No RAID for storage.