Western Digital ATA HD 120 GB
Western Digital WD1200JB Hard Drive 120GB 8.9ms 7200rpm EIDE Ultra ATA/100 8MB Buffer (8192KB) - Special Edition

Western Digital ATA HD 200 GB
Western Digital WD2000JB Hard Drive - 200GB 8.9ms 7200rpm EIDE Ultra ATA/100 8MB
Buffer (8192KB) - Special Edition

Seagate 68 Pin SCSI Hard Drive
Seagate 37GB Cheetah 10K.6
Capacity:37 GB; Speed:10000 rpm; Seek time:4.7 ms avg; Interface:Ultra320 SCSI
The Cheetah 10K.6 is Seagate's sixth-generation 10K RPM high performance, high capacity disc drive. With the fastest interfaces, the highest reliability and the most mature product design, the Cheetah 10K.6 enables the lowest ownership cost. In data intensive environments, increasing the capacity per disc drive lowers ownership costs by deploying fewer systems that use less cubic feet of space requiring less infrastructure such as cabinets, HBAs and less wattage of power.

Maxtor DiamondMAx 80 GB HD
Maxtor DiamondMax Plus 9 6Y080L0 Hard Drive - 80GB 7200rpm EIDE Ultra ATA/133
2048KB Buffer

Seagate Baracuda ATA Hard Drive
Seagate Barracuda ST380011A Hard Drive - 80GB 9.5ms 7200rpm EIDE UltraATA/100 2MB Buffer, 3D Defense System (Disc, Data and Diagnostic)

Western Digital SATA 200 GB HD
Western Digital Caviar SE WD2000JD Hard Drive - 200GB 8.9ms 7200rpm EIDE SATA/150 (Serial ATA) 8MB Buffer (8192KB), with Data Lifeguard Tools, SecureConnect & Flexpower Technologies (OEM Drive Only No Cables Included)

Western Digital SATA 160 GB HD
Western Digital Caviar SE WD1600JD Hard Drive - 160GB 8.9ms 7200rpm EIDE SATA/150 (Serial ATA) 8MB Buffer (8192KB), with Data Lifeguard Tools, SecureConnect & Flexpower Technologies (OEM Drive Only No Cables Included)

Maxtor DiamondMax SATA 200 GB
Maxtor DiamondMax Plus 10 6B200M0 Hard Drive - 200GB 9.0ms 7200rpm SATA/150 (Serial ATA) 8MB Buffer (8192KB), Shock Protection System, Data Protection System, 100% FDB (fluid dynamic bearing) motors (OEM Drive Only No Cables Included)