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Technical Details for Hitachi Endurastar N4K20 20 GB


Technical Details for Hitachi Endurastar N4K20 20 GB Hard Disk Drive
Hitachi Endurastar N4K20 20 GB 
Description: Model ID HTA422020F9ATN0 / Hitachi Endurastar N4K20 - Hard drive - 20 GB - internal - 2.5" - ATA-100 - 44 PIN IDC - 4200 rpm - buffer: 8 MB / Hitachi presents a 2.5-inch hard disk drive designed specifically to perform in extreme temperature environments. The new Endurastar N4K20 ... more
Hitachi Endurastar N4K20 20 GB ... creates a new generation of hard drives to meet the expanding needs of emerging markets.

Built to operate in temperature ranges of up to -20° C to +85° C, the Hitachi Endurastar hard disk drives are the only drives available in the market today which support the environmental conditions commonly found in the automotive industry. These drives are the ideal choice for automotive applications, including car navigation and car audio products.

The new Endurastar models feature glass media and load/unload technology in addition to shock sensor technology, which cushions the drive in less than ideal shock or vibration conditions.

The N4K20 incorporates fluid dynamic bearings (FDB) in the spindle motor, re-designed to support a wider temperature range. The new FDB allows the same quiet operation and improved shock characteristics as with PC models, but offers even higher reliability for automotive environments.

These features enable the Endurastar drives to employ a non-operating shock tolerance of 800G/1ms, and an operating shock tolerance of 100G/11ms.

Technical Details for Hitachi Endurastar N4K20 20 GB

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General
Device TypeHard drive - internal
Width7 cm
Depth10 cm
Height9.5 mm
Weight107 g
Hard Drive
Form Factor2.5" x 1/8H
Capacity20 GB
Interface TypeATA-100
Buffer Size8 MB
FeaturesFluid Dynamic Bearing (FDB) motor, load/unload technology, shock sensor
Performance
Drive Transfer Rate100 MBps (external) / 31.4 MBps (internal)
Seek Time13 ms (average) / 24 ms (max)
Track-to-Track Seek Time3 ms
Average Latency7.2 ms
Spindle Speed4200 rpm
Reliability
Non-Recoverable Errors1 per 10^13
Start / Stop Cycles300,000
Expansion / Connectivity
Interfaces1 x ATA-100 - 44 PIN IDC
Compatible Bays1 x internal - 2.5" x 1/8H
Environmental Parameters
Min Operating Temperature0 °C
Max Operating Temperature60 °C
Humidity Range Operating5 - 90%
Shock Tolerance100 g @ 11ms half-sine pulse (operating) / 800 g @ 1ms half-sine pulse (non-operating)
Vibration Tolerance1 g @ 22-500 Hz (operating) / 5 g @ 22-500 Hz (non-operating)
Sound Emission24 dB
 
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Hitachi Endurastar N4K20 20 GB