Hardware

adaptec makes the best SCSI controllers:

http://www.adaptec.com/worldwide/product/prodtechindex.html?cat=%2fTechnology%2fSCSI&source=home

Look at the Western Digital drive and determine which version of SCSI it works under and purchase a controller accordingly.

There's Ultra SCSI, Ultra-2, Ultra-Wide, etc. There's a bunch of white papers on the adaptec site.

You can also go into a computer store, broswe the shelves for a SCSI controller.

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