Building a dual-Xeon Proliant server

[catii]

I'm building a dual-Xeon Proliant server for a client that needs nearly a terabyte of on-line storage, & equivalent real-time backup.

My solution is to create two RAID-5 storage subsystems using Arena Fidy cases <

http://www.teklinkusa.com/product/arena/arenafidy.html>;

with four 200-GB 7200-rpm EIDE hard-drives. This gives 600 GB of storage in each subsystem, & I'll be using IBM Tivoli to provide real-time backup from case 1 to case 2.

Has anyone else tried this? If so, I would appreciate details on what you've experienced, especially on disconnecting case 2 from the FireWire chain to take off-site each night for backup.

Mahalo! (Thanks!)