With 300 GB of storage, this is a good HDD drive if you need a larger storage unit. This model's rotation speed is 15 000 rpm.
From OnBuy
Seagate Cheetah 300gb 3.5" Sas 300gb Sas Internal Hard Drive
Clove Technology
Seagate Cheetah 300GB 3.5" SAS 3.5"
Athema Services
seagate 300gb 16mb 15k sas 6gb7s cheetah st3300657ss - eet01