Seagate Barracuda ST3500320AS 500GB SATA Hard Drive

Capacity: 500GB
Spindle Speed: 7,200RPM
Interface Type: SATA
Disk Size: 3.5″x1.0″ (LFF Hard Drive)
Sustained Throughput (MBps): 105
Average Seek Time (read/write ms): 8.5 / 9.5
Electrical Interface Speed: SATA 300 – 3.0Gbps
On-Board Cache: 32MB

This drive provides the following key features:

• 7,200 RPM spindle speed.
• High instantaneous (burst) data-transfer rates (up to 300 Mbytes per second).
• Perpendicular recording, Tunneling Magnetoresistive (TMR) recording heads and EPRML TECHNOLOGY, for 
increased areal density.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Native Command Queueing with command ordering to increase performance in demanding applications.
• Full-track multiple-sector transfer capability without local processor intervention.
• Quiet operation.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Supports latching SATA cables and connectors

Specifications	500 GB
Model Number	ST3500320AS
Interface	SATA 3.0Gb/s
Cache	32 MBytes
Capacity	500 GB
Guaranteed SECTORS	976,773,168
Heads	4
Discs	2
Bytes Per SECTOR	512
Default SECTORS Per Track	63
Default read/write heads	16
Default Cylinders	16,383
PHYSICAL
Height (max)	26.1 mm  (1.028 inches)
Width (max)	101.6 mm  (4.010 inches)
Length (max)	146.99 mm  (5.787 inches)
Weight (typical)	>=530 grams  (>=1.168 pounds)
PERFORMANCE
Spindle Speed	7,200 rpm
Average latency	4.16 msec
Random read seek time	8.5 msec
Random write seek time	9.5 msec
RELIABILITY
MTBF	1,200,000 hours
Annual Failure Rate	0.34
POWER
Maximum start current, DC	2.80 amps