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Virtualization tames the storage beast for a veterinary school

From backup to live storage, a single, virtualized storage-area network does it all for a Florida veterinary school
By Julie Bort , Network World , 05/21/2007
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When it comes to flexible enterprise storage, the University of Florida College of Veterinary Medicine doesn't horse around. Over the last six months, the college has been putting its 7TB storage area network through its paces, using it for nearline backup and primary storage, and has this insight to share: Storage virtualization is the cat's meow.

The tale begins in late 2005, with UFCVM trying to cope with staggering volumes of advanced, multimedia diagnostic data. The college treats tens of thousands of animals each year -- in 2006 it handled more than 40,000 cases, it says. The pain point was backups: The window required for nightly backups to tape had begun to outstrip the time available to complete them.

To fix the problem, IT staff knew they wanted a nearline, disk-based SAN. They considered the usual proprietary storage vendors and realized their $100,000 budget wouldn't go very far, says Sommer Sharp, systems programmer for UFCVM, in Gainesville, Fla.

So Sharp decided to piece together storage capacity from affordable vendors and write the management pieces in-house. Then she learned of Storage Virtualization Manager (SVM), a virtualization appliance from StoreAge Networking Technologies, now owned by LSI.

Sommer Sharp

SVM, which sits between a company's servers and the SAN (or SANs), takes low-volume snapshots of production data and sends them simultaneously to nearline backup disks and tape libraries. Because it operates outside the data path, it does not drag performance down, its maker says. It also lets storage volumes be moved among SANs regardless of the brands of the servers or storage devices involved. In this way, it creates a single, flexible pool of storage.

The college's SAN setup is a little unusual, too. The servers use iSCSI to communicate with their allocated space on the SAN, but the storage, Nexsan Technologies' SATABlade systems, uses Fibre Channel to work with the SAN's control appliances. These include the SVM, as well as a Troika Accelera switch (now QLogic's SANbox 8000).

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