Gateway 40GB 4200-RPM Hard Drive - 5502779

Feature	Description
Manufacturer	Hitachi
Model number	IC25N040ATMR04
Physical Layout
Bytes per sector	512
Sectors per track	330-633
Number of heads	2
Number of disks	1
Logical layout
Number of heads	16
Number of sectors/track	63
Number of cylinders	16 383
Number of sectors	78 140 160
Total logical data bytes	40 007 761 920
Data sheet
Rotational Speed	4200 RPM
Data transfer rates (buffer to and from media)	350 megabytes per second (MBps)
Data transfer rates ULTRA DMA 100	100 MBps
Recording density	28 Kbit/mm maximum 96 KBPI maximum typical
Areal density	106 Kbit/sq-mm maximum typical 70 Gbit/sq-inch maximum
Number of zones	16
Performance characteristics
Average random seek time - read	12 ms
Average random seek time - write	14 ms
Rotational speed	4200 RPM
Power-on-to-ready	5.0 seconds
Command overhead	1.0 ms
Disk-buffer data transfer	350 Mb/s typical
Buffer-host data transfer	100 Mb/s
Average seek time
Read	12 ms typical - 16 ms maximum
Write	14 ms typical - 17 ms maximum
Full stroke seek time
Read	23.0 ms typical - 30.0 ms maximum
Write	24.0 ms typical - 31.0 ms maximum
Single track seek time
Read	2.5 ms typical - 4.0 ms maximum
Write	3.0 ms typical - 4.5 ms maximum
Average latency	7.1 ms
Drive ready time	Power on to Ready 5.0 ms typical - 9.5 maximum
Operating conditions
Temperature	5 to 55° C
Relative humidity	8 to 90% non-condensing
Maximum wet bulb temperature	29.4° C non-condensing
Maximum temperature gradient	20° C per hour
Altitude	-300 to 3 048 m (10 000 feet)
Non-operating conditions
Temperature	-40 to 65° C
Relative humidity	5 to 95% non-condensing
Maximum wet bulb temperature	40° C non-condensing
Maximum temperature gradient	20° C per hour
Altitude	-300 to 12 192 m (40 000 feet)
Physical dimensions and weight
Height	9.5 mm
Width	69.85 mm
Length	100.2 mm
Weight	95 grams