Specifications
Part number 5502970

The following table provides specifications for the Western Digital 250-GB 7200-RPM 80GPP SATA hard drive.

Physical
Interface Serial ATA (SATA)
Formatted Capacity 250,059 MB
Bytes Per Sector 512
Default Sectors Per Track 63
Default Read/Write Heads 16
Default Cylinders 16,383
Guaranteed Sectors 488,397,168
Dimensions
(H × W × D)		 1.028 × 4.0 × 5.787 inches
Weight 1.32 pounds
>Performance
Spindle Speed (RPM) 7,200
Average Latency 4.2 milliseconds (ms)
Track-to-Track Seek Time 2.0 ms (average)
Drive Ready Time 9.0 seconds (average)
Average Read Seek 8.9 ms (average)
Full Stroke Read Seek 21 ms (average)
LBA Support Yes
Buffer 8 MB
>Power Requirements
Idle Mode 10.0 Watts (W)
Standby Mode 1.8 W
Sleep Mode 1.3 W
>Environmental
Temperature 5 to 55° C (operating)
-40 to 65° C (non-operating)
Thermal Gradient (operating) 20° C per hour (maximum)
Relative Humidity (operating) 5 to 95% (non-condensing)
Shock (operating) 30 Gs (write), 65 Gs (read)
Shock (non-operating) 300 Gs (2-platter), 250 Gs (3-platter)