IBM updates SAN File System software

IBM next month will release a new version of its TotalStorage SAN (storage area network) File System Software designed to work with a wider variety of new server and storage environments.

Unlike previous versions of the SAN File System, which supported only IBM products, Version 2.1 will work with storage devices from IBM rivals including EMC, Hewlett-Packard, and Hitachi Data Systems. It will also now support the Red Hat Linux Enterprise Server 3.0 and Sun Microsystems' Solaris 9 operating systems.

The software, which will begin shipping on June 29, has also been enhanced to allow customers to move data from one device to another without disrupting their server operating systems, said Jeff Barnett, [cq] the manager of IBM's storage software strategy. "The environment itself is designed so that it isolates your server environment from your storage environment," he said.

IBM's SAN File System is based on SANergy technology the company acquired from Mercury Computer Systems in 1999, and while it was initially released as a product last fall, it has been under development for some time, said Arun Taneja [cq] the founder of storage industry research firm the Taneja Group. "IBM's SAN File System is actually fairly mature in that regard, because they didn't start from scratch," he said.

SAN file systems are useful for companies looking to provide a number of different servers with identical views of data on the network, Taneja said. "This kind of stuff comes into play where there are large amounts of data, you have heterogeneous server environments, and you have the need for several servers to work with each other on a particular application," he said.

The Ohio Supercomputer Center has been working since mid-January on implementing the SAN File System on 520T bytes of storage it is using for a variety of high-performance computing tasks. The center decided to use IBM's software because of it could be used by a large number of systems and with a large amount of storage, said Leslie Southern, the director for high-performance computing at the center.

Though the center is using the SAN File System exclusively on IBM FAStT900 and FAStT600 storage servers right now, version 2.1 might change that, she said. "We have a heterogeneous environment as far as computing goes," she said. "It gives us more flexibility in choosing the appropriate equipment."

Version 2.1 of the SAN File System will be available stand-alone, or as a free upgrade to existing customers on June 29. Pricing for the software will remain unchanged, IBM said. There will be a US$10,000 per processor licensing fee for the File System's Metadata Server, and customers will pay a $5,000 per processor usage charge for application servers that use the file system.

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