This Hard Drive

Newegg.com has the MicroNet SR4 7200 RPM 2TB ESATA External Hard Drive With 2-port PCI-Express Card for $645.99 - $100 Exclusive Mail-In rebate (Expires 12/31/2007) + $12.03 shipping = $558.02 Shipped.

Product description from Newegg.com:

Remember when one terabyte of storage was expensive? Well!
, those days are fading fast, and no one will miss them. Here’s an external RAID system for you. Bundled with an eSATA RAID controller, you get two terabytes of storage in four trayless swappable modules (by changing drive modules, it can be expanded to four terabytes). It works with Windows 2000/XP/2003/Vista, Mac OS X 10.4.8 and newer, and supports JBOD/Span/Mirror/Stripe/RAID-5/RAID-10 (RAID-5 is not available on the Mac with this model). With a maximum transfer rate of 300 MB/s, this drive is speedy enough for most of your needs, and the swappable modules make it easily upgradeable. Can’t afford four terabytes right away? Buy the two terabyte model and later trade your modules up.

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