Hard Drive; 8.4-Gb Ibm Hard Drive Specifications; 8.4-Gb Ibm Dhea Hard Drive Specifications - NEC PowerMate Professional 9000E Series Service Manual

Hard Drive

The following specifications apply to the hard drives available with the system.
Note:
Series computers are subject to change according to
availability, and as technologies evolve. The system may
have a different hard drive than those listed in this section.

8.4-GB IBM Hard Drive Specifications

The specifications for the 8.4-GB IBM DHEA-38451 hard drive are included in
the following table.
Feature
Hard Drive
Formatted Capacity
Nominal Rotational Speed
Number of Disks
Number of R/W Heads
Sectors
Recording
Performance
Buffer Size
Power
Temperature (non-condensing)
Humidity (non-condensing)
Altitude
Dimensions
Weight
Hard drives in PowerMate Professional 9000E

8.4-GB IBM DHEA Hard Drive Specifications

Specification
8.4-GB IBM DHEA-38451
8400 MB
5,400 rpm
4
8
Sectors per drive: 16,514,064
Bytes per sector: 512
Recording technology: Multiple Zone
Density: 162.6 Kbpi (max.)
Track density: 10700 tpi
Maximum effective areal density: 1747 Mbits/in
Seek time: 9.5 msec (read)
Media transfer rates: 76.2 to 127.4 MB per second
Interface transfer rate: 33.3 MB per second (max.)
472 KB
+5V +/-5%; 100 mV peak-to-peak allowable ripple/noise
12V +/-10%; 150 mV peak-to-peak allowable
ripple/noise
Operating: 5 to 55 C (41 to 131 F)
Non-operating: -40 to 65 C (-40 to 149 F)
Operating: 5% to 85% rh, 30 C (86 F)
Non-operating: 5% to 95% rh, 40 C (104 F)
Operating: -300 m to 3,048 m (-650 to 10,000 ft.)
Non-operating: -300 m to 12,000 m (-650 to 40,000 ft.)
Height: 1.0 inches (25.4 mm)
Width: 4.0 inches (101.6 mm)
Depth: 5.75 inches (146.1 mm)
1.2 lbs (0.5 Kg)
2
Specifications 10-7