| NEW 40Y9028 Hitachi DeskStar
80GB 8mb cache 7200RPM SATA Hard Drive HDS728080PLA380
The Hitachi Deskstar extends on the companies reliability and
performance leadership. Hitachi's standardized features in consumer
and mid-range server solutions to enable faster transfer rates,
scalable performance and quicker boot up times.
Hitachi is dedicated to providing a breadth of hard disk drive
products to satisfy all of today's demanding computing needs.
Hitachi hard drives are backed by an array of technical support and
services, which may include customer and integration service.
Physical Layout
Label Capacity 80 GB
Bytes Per Sector 512
Sectors Per Track 567-1170
Number of Heads 2
Number of Disks 1
Data Sectors Per Cylinder 1134-2340
Data Cylinders Per Zone 1444-4501
Logical Layout
Number of Heads 16
Number of Sectors Per Track 63
Number of Cylinders 16 383
Number of Sectors 160 836 480
Total Logical Data Bytes 82 348 277 760
Performance
Data Transfer Rates 757 Mbps
Data Buffer Size 2048
Rotational Speed 7200 RPM
Number of Buffer Segments Up to 128 (read)
Up to 63 (write)
Recording Density 689 Kbpi max
Track Density 87 / 90 / 93 TPI
Areal Density 62 Gbits/in2 max
Number of Data Bands 30
Average Seek Times
(Without command overhead including settling)
Read: 8.5 ms typ; 9.5 ms max
Write: 9.5 ms typ; 10.5 ms max
Quiet Seek mode:
Read: 19.5 ms typ; 20.5 ms max
Write: 20.5 ms typ; 21.5 ms max
Full Stroke Seek Times
(Without command overhead including settling)
Read: 15.1 ms typical; 18.1 ms max
Write: 16.1 ms typical; 19.1 ms max
Quiet Seek mode:
Read: 32.5 ms typical; 35.5 ms max
Write: 33.5 ms typical; 36.5 ms max
Environmental
Temperature Operating: 5°C to 55°C, Non-operating: -40C to
65°C
Relative Humidity Operating: 8 to 90% non-condensing,
Non-operating: 5 to 95% non-condensing
Maximum Wet Bulb Temperature Operating: 29.4°C
non-condensing, Non-operating: 35°C non-condensing
Maximum Temperature Gradient 15°C/hour
Altitude Operating: -300 to 3 048 m, Non-operating:
-300 to 12 000 m
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