Service Manuals, User Guides, Schematic Diagrams or docs for : IBM HDD IBM Travelstar 25GS, 18GT, and 12GN
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Leading-edge technology and innovative design for
high-performance, high-capacity mobile hard drives
IBM Travelstar 25GS, 18GT, and 12GN
2.5-inch hard disk drives
Leading-edge technology Performance and reliability
Highlights Featuring a wide array of leading-edge IBM Travelstar drives include IBM drive
technologies, the IBM Travelstar 25GS, fitness technologies, a set of diagnostic
The IBM Travelstar* 25GS offers 18GT and 12GN mobile hard drives
, tools including IBM Drive Fitness Test*
several industry firsts: a record- continue the tradition of IBM leadership (DFT) and Self-Monitoring Analysis and
setting capacity of 25 GB, a media in the mobile storage arena. These IBM Reporting Technology (S.M.A.R.T.). In
transfer rate of up to 181.2 Mbits/ Travelstar drives employ advanced addition, the new IBM Travelstar 25GS,
sec, and a disk rotational speed of design and engineering innovations to 18GT, and 12GN drives employ a
5400 RPM. significantly increase shock resistance thermistor, an adaptive control device
while simultaneously reducing heat and that helps maintain high performance
The new IBM Travelstar 18GT and noise levels. As a result, the new IBM and fast seek times at high environmen-
12GN hard drives provide areal Travelstar drives are ideally suited for tal temperatures.
densities of 10.1 Gbits/sq. in. and demanding, high-capacity Internet,
6 GB of capacity per disk. digital audio, video streaming, and real-
time multimedia applications--whether
The IBM Travelstar 12GN has the users are in the office or on the road.
industry's highest shock rating of
800 G/1 ms. The innovative hard drive design
combines IBM giant magnetoresistive
Fast Ultra-DMA interface transfer (GMR) head technology, Partial
rates reach as high as 66 MB/sec. Response Maximum Likelihood (PRML)
digital channel, a head load/unload
An advanced electromechanical feature, a more rigid base casting than
design provides exceptional previous models, Enhanced Adaptive
storage capacities and superior Battery Life Extender* (ABLE) 3.0, and
shock ratings to improve reliabil- state-of-the-art manufacturing tech-
ity and ruggedness. niques. This design provides the
exceptional storage capacity, perfor-
mance, power management, quality,
and reliability required by today's IBM Travelstar 25GS 17-mm 5400 RPM,
notebook systems. 25 GB ATA-4 hard drive1
IBM Travelstar 25GS 17-mm 5400 RPM, IBM Travelstar 18GT 12.5-mm 4200 RPM, IBM Travelstar 12GN 9.5-mm 4200 RPM,
25 GB ATA-4 hard drive1 18 GB ATA-4 hard drive1 12 GB ATA-4 hard drive1
IBM Travelstar hard disk drive characteristics
Feature Benefit
First 5400 RPM mobile hard drive IBM Travelstar 25GS provides outstanding
performance and seek times at near-desktop
equivalence without sacrificing high capacity
First 25 GB mobile hard drive IBM Travelstar 25GS has the capacity to enable
mobile users to work with a new range of emerging
storage-intensive applications
First 800 G/1 ms shock rating for a IBM Travelstar 12GN provides exceptional ruggedness
2.5-inch mobile hard drive to help withstand shock while increasing drive
reliability and extending drive lifetime
High areal density of 10. Gbits/sq. in.
1 IBM Travelstar 18GT and 12GN maximize areal density
and 6 GB of capacity per disk to enable more data storage per disk in standard,
compact packages
Fast Ultra-DMA 66 2.5-inch mobile IBM Travelstar 25GS, 18GT, and 12GN all feature high
hard drives data transfer rates to help ensure the ultimate
performance possible
IBM drive fitness technologies IBM DFT and S.M.A.R.T. capabilities help enhance
reliability
IBM quality, support, and service
The new IBM Travelstar mobile hard drives
share common field-proven components
to provide manufacturers with superior-
quality hard drives backed by a three-
year warranty and IBM technical support
and services.
IBM family of Travelstar 25GS, 18GT, and 12GN hard disk drives at a glance
Product name Travelstar 25GS Travelstar 18GT Travelstar 12GN
Model DARA-225000 DARA-218000/215000 DARA-212000/209000/206000
Configuration
Interface ATA-4 ATA-4 ATA-4
Capacity (GB) 25.3 18. /15.
1 1 12.0/9.0/6.0
Sector size (bytes) 512 512 512
Recording zones 12 12 12
User cylinders 16,064 17,088 17,088
Data heads 10 6/5 4/3/2
Disks 5 3/3 2/2/1
Max. areal density (Gbits/sq. in.) 8.8 10.1 10.1
Max. recording density (KBPI) 327 .4 356.0 356.0
Track density (KTPI) 26.8 28.5 28.5
Drive Fitness Test Supported Supported Supported
Performance
Data buffer (KB) 5122 5122 5122
Rotational speed (RPM) 5411 4200 4200
Latency (average ms) 5.5 71
. 71
.
Media transfer rate (Mbits/sec) 105. -181.2
1 85.5-161.6 85.5-161.6
Interface transfer rate (MB/sec) 66.6 Ultra-DMA mode 4 66.6 Ultra-DMA mode 4 66.6 Ultra-DMA mode 4
16.6 PIO mode 4 16.6 PIO mode 4 16.6 PIO mode 4
Seek time (ms)
Average (typical) 12.0 12.0 12.0
Single track (typical) 2.5 2.5 2.5
Full stroke (typical) 23.0 23.0 23.0
Reliability
Error rate (nonrecoverable) <1 per 1.0E13 bits transferred <1 per 1.0E13 bits transferred <1 per 1.0E13 bits transferred
Load/unload cycles 300,000 300,000 300,000
Power
Voltage requirement (VDC) +5 (◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo