WD XE WD9001BKHG - hard drive - 900 GB - SAS 6Gb/s

WD XE delivers 6 Gb/s transfer rates, sustained sequential data rates of up to 204 MB/s and high random I/O rates. This 2.5-inch SAS drive requires less than 8 watts to operate. And its small form-factor allows for more system airflow resulting in lower cooling costs.