146GB SAS U300 15K rpm 16MB Hard Drive. Serial Attached SCSI (SAS) is a computer bus technology primarily designed for transfer of data to and from computer data storage devices such as hard drives, CD-ROM and DVD tape drives and similar devices. SAS is a serial communication protocol for direct attached storage (DAS) devices. It is designed for the corporate and enterprise market as a replacement for parallel SCSI, allowing for much higher speed data transfers than previously available, and is backwards-compatible with SATA drives. SATA drives may be connected to SAS controllers, but SAS drives may not be connected to SATA controllers. Though SAS uses serial communication instead of the parallel method found in traditional SCSI devices, it still uses SCSI commands for interacting with SAS End devices.

Specifications:

• Capacity: 146.8 GB
• Rotational Speed: 15,000 rpm
• Cache: 16 MB
• Interface: SAS
• Max. External Transfer Rate: 300 MB/s
• Seek Time:
  • Track to Track: Read - 0.2ms; Write - 0.4ms
  • Average: Read - 3.5ms; Write - 4.0ms
  • Full Stroke: Read - 6.8ms; Write - 7.5ms
• Shock:
  • Operating: 60G @ 2ms
  • Non-operating: 250G @ 2ms
• Dimensions (WxLxH): 4.010 x 5.787 x 1.028 inch / 101.85 x 146.99 x 26.11 mm