Capacity: 320GB
Spindle Speed: 7,200RPM
Interface Type: SATA
Disk Size: 3.5″x1.0″ (LFF Hard Drive)
Sustained Throughput (MBps): 
Average Seek Time (read/write ms): 
Electrical Interface Speed: SATA 600 – 6.0Gbps
On-Board Cache: 16MB

Key Features

Interface

PATA – Enhanced integrated drive electronics (EIDE), also called Parallel ATA (PATA), hard drives have been the standard in the computer INDUSTRY for more than 10 years.

SATA – Serial ATA (SATA) hard drives are quickly becoming the new standard. Motherboard MANUFACTURERS now include SATA inputs on their boards. Because of their considerably narrower cables, SATA hard drives provide increased airflow and less clutter and in the computer system compared to PATA drives.

The performance difference – PATA drives support data transfer rates up to 100MB/sec, and all WD Caviar Blue SATA drive support 3 Gb/s transfer rates.

Solid performance – With SATA and PATA interfaces, and cache sizes up to 32 MB, this series of drives offer a full range of performance features.

Ultra cool and quiet – Keeping the drive cool enhances reliability. WD continues to develop new and innovative ways to keep drives cool while they are operating which helps protect the drive and the data stored on it.

Capacity – We offer WD Caviar Blue drives with capacities from 80 GB to 1 TB because you can never have too much storage space.

NoTouch ramp load TECHNOLOGY – The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit. IntelliSeek – Calculates optimum seek speeds to lower power consumption, noise and vibration.

ShockGuard – Instantaneously protects the hard drive against damage from bumps and vibrations while it is running. This TECHNOLOGY enables WD Caviar drives to achieve industry-leading shock specifications.

Compatible – We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab and Mobile Compatibility Lab to give our customers confidence that our drives will WORK in their systems.

Compatibility

This drive is compatible with any computer that accepts 3.5″ SATA drives.

Performance Specifications	WD3200AAKS
Rotational Speed	7200 RPM
Buffer Size	16 MB
Average Latency	4.20 ms (nominal)
Contact Start/Stop Cycles	50,000 minimum
Seek Times
Read Seek Time	8.9 ms
Write Seek Time	10.9 ms (average)
Track-To-Track Seek Time	2.0 ms (average)
Full Stroke Seek	21.0 ms (average)
Transfer Rates
Buffer To Host (Serial ATA)	6 Gb/s (Max)
Buffer To Disk	126 MB/s (Max)
Physical Specifications
Formatted Capacity	320,072 MB
Capacity	320 GB
Interface	SATA 6 Gb/s
User SECTORS Per Drive	625,142,448
Physical Dimensions
English
Height	1.028 Inches (Max)
Length	5.787 Inches (Max)
Width	4.00 Inches (+/- 0.010 inch)
Weight	1.52 Pounds
Metric
Height	26.1 mm (Max)
Length	147 mm (Max)
Width	101.6 mm
Weight	0.69 kg
Environmental Specifications
Operating Shock (Read)	65G, 2 ms
Non-operating Shock	350G, 2 ms
Acoustics
Idle Mode	25 dBA (average)
Seek Mode 0	29 dBA (average)
Seek Mode 3	26 dBA (average)
Temperature (English)
Operating	32° F to 140° F
Non-operating	-40° F to 149° F
Temperature (Metric)
Operating	0° C to 60 ° C
Non-operating	-40° C to 65° C
Humidity
Operating	5-95% RH non-condensing
Non-operating	5-95% RH non-condensing
Altitude (English)
Operating	-1,000 feet to 10,000 feet
Non-operating	-1,000 feet to 40,000 feet
Altitude (Metric)
Operating	-305M to 3,050M
Non-operating	-305M to 12,200M
Operating Vibration
Linear	20-300 Hz, .75G (0 to peak)
Random	7-500 Hz, 0.00221 g² / Hz
Non-operating Vibration
Low Frequency	10-300 Hz, 0.195 inches (double amplitude)
High Frequency	300-500 Hz, 5.0G (0 to peak)
Electrical Specifications
12 VDC Current Requirements
Read/Write	395 mA
Idle	380 mA
Standby	6 mA
Sleep	6 mA
5 VDC Current Requirements
Read/Write	660 mA
Idle	532 mA
Standby	180 mA
Sleep	180 mA
Power Dissipation
Read/Write	6.80 Watts
Idle	6.10 Watts
Standby	.70 Watts
Sleep	.70 Watts