WD Raptor is a new class of hard drive that matches SCSI reliability and performance while providing simplified connectivity for less cost than Parallel SCSI drives.

Specifications
Rotational Speed 10,000 RPM (nominal)
Buffer Size 8 MB
Average Latency 2.99 ms (nominal)
Contact Start/Stop Cycles 20,000 minimum

Seek Times (Average)
Read Seek Time (Average) 5.2 ms
Write Seek Time (Average) 5.9 ms (average)
Track-To-Track Seek Time 0.7 ms (average)
Full Stroke Seek 10.2 ms (average)

Transfer Rates
Buffer To Host (Serial ATA) 1,200 Mbits/s (Max)
Buffer To Disk 816 Mbits/s (Max)
General
Number of Heads (Physical) 2

Formatted Capacity 37,019 MB
Capacity 36.7 GB
Interface ESATA
Actuator Type Rotary Voice Coil
Number of Platters 1
Bytes Per Sector 512
User Sectors Per Drive 72,303,840
Servo Type Embedded

Height (English) 1.028 Inches (Max)
Length (English) 5.787 Inches (Max)
Width (English) 4.00 Inches (+/- 0.010 inch)
Weight (English) 1.60 Pounds (+/- 0.14 pounds)
Metric
Height (Metric) 25.4 mm (Max)
Length (Metric) 147 mm (Max)
Width (Metric) 101.6 mm
Weig.......

(Read Entire Description)