Hitachi J4K30, N4K30 User Manual
Endurastar™ J4K30 and N4K30
2.5-INCH HARD DISK DRIVES
Extreme hard drives for extreme environments
Highlights
30GB and 20GB capacity in a 2.5-inch
>
form factor
>
Operating temperature range from
-20° C to +85° C
>
Built-in shock sensor enhances
data integrity
>
Enhanced moisture control system ensures
corrosion control in extreme environments
Applications
>
Automotive
>
GPS navigation systems
>
Applications running in hot and
humid climates
Features and Benefi ts
Feature / Function Benefi ts
Capacity 30GB maximum capacity * 7,500 4-minute MP3 songs, or
20GB also available * 2.7 hours of DV25 video, or
* 15 interactive games
Acoustics Fluid Dynamic Bearing (FDB) motors Quiet operation
Reliability -20° C to +85° C operating temperature Performs well in extreme temperature environments
(J4K30)
High-endurance FDB motor Supports 24x7 applications
Load/unload technology Reduces disk wear and helps protect user data
Built-in shock sensor Enhances data integrity
*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 Endurstar
and are designed specifi cally 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.
™
J4K30 and Endurastar N4K30 are both offered in capacities of up to 30GB,
Ideal for automotive applications
Endurastar hard drives are the preferred solution for automotive applications or other environments 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
fi les, four hours of MPEG2 video and enough navigation data to cover the entire planet!
30 and 20GB | 4200 RPM | ATA-5
DATA SHEET
Reliability and performance
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 fl 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.
www.hitachiGST.com
Endurastar™ J4K30 and N4K30
Specifi cations Endurastar J4K50 Endurastar N4K50
Model(s) HEJ423030F9AT00 HEJ423020F9AT00
HEN423030F9AT00 HEN423020F9AT00
Interface ATA-5 (IDE) f
Capacity (GB) 1 30 / 20 f
Sector size (variable, Bytes/sector) 512 f
Recording zones 16 f
Data heads (physical) 2 f
Data Disks 1 f
Max. areal density (Gbits/sq. in.) 56.5 f
Performance
Data buffer (MB)
Rotational speed (RPM) 4172 f
Latency average (ms) 7.19 f
Media transfer rate (Mbits/sec, max) 361 f
Interface transfer rate (MB/sec, max) 100 Ultra DMA mode-5 f
16.6 PIO mode-4
Seek time (read, typical) (avg. ms) 13 f
Maximum (typical, ms) 24 f
Minimum (typical, ms) 3 f
Reliability
Error rate (non-recoverable) < 1 per 10
Load/unload 300,000 f
Availability 3 (hrs/day x days/wk) 24x7 f
Power
Requirement +5 VDC (+/-5%) f
Startup (W, peak, max.) 6.5 f
Read / Write (W, avg.) 2.15 f
Low power idle (W, avg.) 0.6 f
Standby (W, avg.) 0.15 f
Sleep (W) 0.1 f
Physical size
z-height (mm) 9.5 f
Dimensions (width x depth, mm) 70 x 100 f
Weight (g, typ.) 107 f
Environmental (operating)
Ambient temperature -20° to 85° C 0o to 60o C
Relative humidity (non-condensing) 5% to 90% f
Shock (half-sine wave) 250G (2ms) f
Vibration (sine wave) 1G (22-500Hz) f
Environmental (non-operating)
Ambient temperature -40° to 85° C f
Relative humidity (non-condensing) 5% to 90% f
Shock (half-sine wave) 800G (1ms) f
Vibration (sine wave) 5G (22-500Hz) f
Acoustics (A-weighted sound power)
Idle (Bels, typ.) 2.4 f
Op (Bels, typ.) 3.0 f
2
8 f
13
bits transferred f
Hitachi quality and service
Hitachi Endurastar hard disk drives are designed
to the highest quality standards and contain fi eld-
proven components. Hitachi provides worldwide
technical support and integration services to
enable global customers to bring their products to
market quickly.
Hitachi drives are backed by an array of technical
support and services, which may include
customer and integration assistance. Hitachi is
dedicated to providing a breadth of hard disk
drive solutions to satisfy all of today’s demanding
computing needs.How to read the Travelstar
model number
How to read the Travelstar model number
HTJ423030F9AT00 = 30GB/8 MB buffer
H = Hitachi
E = Endurastar
J = J4K50 model (N = N4K50)
42 = 4200 RPM
30 = Full capacity — 30GB
30 = Capacity this model, 30 = 30GB
(20 = 20GB)
F = Generation code
9 = 9.5mm z-height
AT = ATA interface
0 = Feature code
0 = Reserved
Information and Technical Support
www.hitachigst.com (Main Web site)
www.hitachigst.com/partners (Partner Web site)
North America
support_usa@hitachigst.com
Toll free: 1 888 426-5214, Direct: 1 507 322-2370
Asia Pacifi c
support_ap@hitachigst.com / 65 6840 9595
EMEA and UK
support_uk@hitachigst.com / 44 20 7133 0032
Germany
support_uk@hitachigst.com / 49 6929 993601
Program Support
Partners First
channelpartners@hitachigst.com
1 One GB is equal to one billion bytes when referring to hard drive
capacity. Accessible capacity may be less.
2 Portion of buffer capacity used for drive fi rmware.
3 Intended for less than 20 percent duty cycle industrial applications
and other non mission critical applications.
™
Program
Hitachi Global Storage Technologies’ trademarks are authorized for use in countries and jurisdictions in which Hitachi Global Storage Technologies has the right to use, market and advertise the brands. Contact Hitachi Global Storage Technologies for further information. Hitachi
Global Storage Technologies shall not be liable to third parties for unauthorized use of Hitachi Global Storage Technologies trademarks..
References in this publication to Hitachi Global Storage Technologies’ products, programs, or services do not imply that Hitachi Global
Storage Technologies intends to make these available in all countries in which it operates.
Product specifi cations provided are sample specifi cations and do not constitute a warranty. Information is true as of the date of
publication and is subject to change. Actual specifi cations for unique part numbers may vary. Please visit the Support section of our website,
www.hitachigst.com/support, for additional information on product specifi cations. Photographs may show design models.
DSEJ423007EN-02
© 2007 Hitachi Global Storage Technologies
Hitachi Global Storage Technologies
3403 Yerba Buena Road
San Jose, CA 95135 USA
Produced in the United States 12/04. Revised 3/08.
All rights reserved.
™
Endurastar
Hitachi Global Storage Technologies.
and Partners First™ are trademarks of
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