NAS gateway


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NAS gateway

A front end to storage that is highly scalable. A NAS gateway functions like a file server with unlimited storage. Unlike the traditional "legacy" NAS device, which contains the file sharing protocol, the file system and the drives, a NAS gateway has no drives.

The front end of the NAS gateway connects to the LAN over Ethernet. The back end connects to a RAID array via Fibre Channel or to a Fibre Channel switch, in which case the NAS gateway becomes a front end to a storage area network (SAN). Single RAID arrays can scale to several terabytes, but switches enable a large number of storage arrays to be attached.

Legacy NAS and NAS Gateways
When a traditional "legacy" NAS runs out of storage space or slows down due to a heavy workload, a new NAS device must be added to the network, and the file references in all the users' machines have to be remapped to the new drives. This administration headache is eliminated with a NAS gateway because it always presents users with a single folder interface to the storage. More storage can be added without reconfiguring anyone's computer. In addition, splitting a NAS system into gateways and storage arrays allows file processing and storage to be scaled independently of each other. See NAS and RAID.


A NAS Gateway
On the right side of this NAS gateway are two Fibre Channel ports for storage and four Gigabit Ethernet ports for LAN connectivity. The two 10/100 Ethernet sockets on the left are management ports. (Image courtesy of ONStor, Inc.)















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References in periodicals archive ?
NEC Corporation of America (NEC), a provider and integrator of advanced IT, communications, managed services and biometric solutions, revealed on Wednesday that it has added the the M-Series NAS Gateway (NAS-network attached storage) to its storage solution platform.
ONStor's Bobcat Series of NAS Gateways and industry standard storage arrays deliver scalable, shared storage to Windows, UNIX, and Linux clients and servers.
ONStor, a provider of scalable clustered NAS solutions for the enterprise, announced on Wednesday (16 July) the launch of the Cougar 6000 series NAS gateway.
The Bobcat Series NAS Gateway and Mirror software from ONStor, a provider of scalable clustered NAS solutions, have been selected by CoreVault, a online backup and recovery solutions and privately held division of DWL Holding Company, as the foundational disaster recovery solution for its customers.
ONStor has coupled the Bobcat NAS Gateway with Nexsan Technologies' SATABlade, a Serial ATA (SATA) storage system within a 1 U architecture that maximizes air flow and allows easy access to eight hot-swappable SATA drives.
Virtual Disk Service (VDS) is a key development for WSS 2003 that allows it to be seamlessly deployed as a NAS Gateway to access SAN-based storage resources.
* The industry's first open NAS Gateway, IBM TotalStorage Networked Attached Storage 300G, which allows Local Area Network (LAN)-based clients and servers to easily interoperate with an existing Storage Area Network (SAN), leveraging the features and performance of a SAN with the ease and convenience of a NAS product.
<p>The Celerra NAS gateway uses the Clariion frame as its back-end.<p>Atac-Barrett said the new 2TB 5,400-rpm SATA drives also consume 60% less power than the previous 1TB 7,200-rpm SATA drives.<p>A Clariion array can support up to 480 drives, or 960TB of raw capacity.
Worldwide Computer Products News-15 January 2003-New NAS gateway to be released by Spinnaker(C)1995-2003 M2 COMMUNICATIONS LTD http://www.m2.com