Hitachi J4K30 User Manual

EndurastarJ4K30 and N4K30  
2.5-INCH HARD DISK DRIVES  
Extreme hard drives for extreme environments  
Highlights  
Features and Benefits  
> 30GB and 20GB capacity in a 2.5-inch  
Feature / Function  
Benets  
form factor  
Capacity  
30GB maximum capacity  
20GB also available  
* 7,500 4-minute MP3 songs, or  
* 2.7 hours of DV25 video, or  
* 15 interactive games  
> Operating temperature range from  
-20° C to +85° C  
> Built-in shock sensor enhances  
data integrity  
Acoustics  
Reliability  
Fluid Dynamic Bearing (FDB) motors  
Quiet operation  
-20° C to +85° C operating temperature Performs well in extreme temperature environments  
(J4K30)  
> Enhanced moisture control system ensures  
corrosion control in extreme environments  
High-endurance FDB motor  
Load/unload technology  
Built-in shock sensor  
Supports 24x7 applications  
Applications  
> Automotive  
Reduces disk wear and helps protect user data  
Enhances data integrity  
> GPS navigation systems  
> Applications running in hot and  
humid climates  
*Actual storage may vary depending on the compression rate applied.  
Turn up the heat  
Hitachi delivers a 50-percent storage capacity increase in its line of “extreme” hard disk drives.  
The EndurstarJ4K30 and Endurastar N4K30 are both offered in capacities of up to 30GB,  
and are designed specically to perform in extreme temperature environments. With an  
operating temperature range as wide as -20°C to +85°C, the new Endurastar models are built  
to perform in the harshest environments—from the desert heat to the Antarctic chill.  
Ideal for automotive applications  
Endurastar hard drives are the preferred solution for automotive applications or other environ-  
ments which require high robustness and wider operating temperatures than standard hard  
drive applications. In fact, the Endurastar J4K30 is already being used in car entertainment and  
navigation applications—and 30GBs of storage means users can store more than 5,000 audio  
les, four hours of MPEG2 video and enough navigation data to cover the entire planet!  
Reliability and performance  
|
30 and 20GB 4200 RPM | ATA-5  
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. Endurastar drives incorporate uid dynamic bearings (FDB) in the spindle motor,  
allowing the same quiet operations and improved shock characteristics as with PC models,  
but offers even higher reliability for automotive environments and around-the-clock applications  
in industrial environments. These features enable the Endurastar drives to achieve a  
non-operating shock tolerance of 800G/1ms and an operating shock tolerance of 250G/2ms.  
DATA SHEET  

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