To: Douglas Nordgren who wrote (1791 ) 2/6/2000 12:59:00 AM From: Douglas Nordgren Read Replies (1) | Respond to of 4808
Vendors move to cut server out of data backup By John S. McCright, PC Week February 3, 2000 8:16 AM PT URL: zdnet.com Organizations looking to reduce traffic on their LAN and free up more processing cycles on their servers are seeing more options for so-called serverless backup. A group of hardware and software vendors led by Vixel Corp. on Wednesday announced completion of a project that will enable IT managers to back up a NAS (network attached storage) device to a tape library on a SAN (storage area network) without sending the data over the LAN or through a server. Separately, Advanced Digital Information Corp. on Tuesday began shipping a new Fibre Channel router that enables movement of data directly from disk drives to tape libraries across the SAN with limited server intervention. By transferring some of the bandwidth and intelligence required for backup to the SAN, IT departments can free up the LAN for critical transactional data, observers said. A who's who list Vixel, of Bothell, Wash., which makes Fibre Channel switches used in SANs, was joined in its serverless backup initiative by NAS filer maker Network Appliance Inc.; tape library makers Quantum/ATL Products Inc. and Spectra Logic Inc.; and backup software developers Legato Systems Inc. and Veritas Software Corp. The group certified an IT architecture that starts with a Network Appliance NAS filer equipped with a new QLogic Corp. Fibre Channel host bus adapter. The adapter, which is installed in an existing PCI slot, enables the filer to attach to a Vixel switch. The switch, in turn, connects to a SAN with Quantum or Spectra Logic libraries on it. The companies modified their hardware or software to work with the others and have certified interoperability, but initially they will not offer the package as a bundle. There is no formal process for other vendors to get their switches, filers or software certified as part of the solution, said officials, who didn't rule out the possibility that that could take place. Single drive doesn't hack it While limited to the vendors involved, this type of NAS-to-SAN connection is necessary, said David Hill, an analyst at Aberdeen Group Inc. in Boston. Dedicating an entire tape library to a small NAS filer could be a waste of resources, Hill said. For larger NAS filers, the SAN connection relieves companies of a different kind of burden. "NAS filers used to be 50GB and now they're up to a terabyte, and a single tape drive doesn't do the trick anymore," Hill said. For its part, Advanced Digital Information is pursuing a different route in taking the server, to some extent, out of the backup picture. The company's new FCR 250 router seeks to nearly eliminate server CPU cycles used for backup by sending out software agents. The agents, which follow extended copy commands, allow the router to move data directly from disk drives to tape libraries across the SAN with limited server intervention. ADIC is also adding the extended copy command capability to its tape libraries. This Spring, the company will offer its Scalar 100 technology as a standalone box that will enable those tape libraries to act as NAS devices that could perform serverless backup, said officials in Redmond, Wash. While the FCR 250 is available now, priced beginning at about $9,000, no applications are on the market yet that can take advantage of the extended copy capability. Developers including Legato and Veritas are expected to add extended copy command capabilities to their storage management applications later this year after the Storage Networking Industry Association approves a standard for the command. Vixel is at vixel.com . ADIC is at adic.com .