HGST

Western Digital Deskstar 7K2000. HDD capacity: 2 TB, HDD speed: 7200 RPM, Storage drive buffer size: 32 MB, HDD size: 3.5", Interface: Serial ATA II

Hitachi Deskstar 7K2000 2TB SATA 3Gb/s. HDD capacity: 2 TB, HDD speed: 7200 RPM, Storage drive buffer size: 32 MB, HDD size: 3.5", Interface: Serial ATA II

Western Digital Ultrastar 15K600, 300GB. HDD size: 3.5", HDD capacity: 300 GB, HDD speed: 15000 RPM

HGST Ultrastar C10K600 300GB. HDD size: 2.5", HDD capacity: 300 GB, HDD speed: 10000 RPM