IBM DARA-225000, DARA-218000, DARA-215000, DARA-212000, DARA-209000 Reference Guide

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

Highlights

The IBM Travelstar* 25GS offers
several industry firsts: a record­setting capacity of 25 GB, a media
transfer rate of up to 181.2 Mbits/
sec, and a disk rotational speed of
5400 RPM.

The new IBM Travelstar 18GT and
12GN hard drives provide areal
densities of 10.1 Gbits/sq. in. and
6 GB of capacity per disk.

The IBM Travelstar 12GN has the
industry’s highest shock rating of
800 G/1 ms.

Fast Ultra-DMA interface transfer
rates reach as high as 66 MB/sec.

An advanced electromechanical
design provides exceptional
storage capacities and superior
shock ratings to improve reliabil­ity and ruggedness.

Leading-edge technology

Featuring a wide array of leading-edge
technologies, the IBM Travelstar 25GS,
18GT, and 12GN mobile hard drives
continue the tradition of IBM leadership
in the mobile storage arena. These IBM
Travelstar drives employ advanced
design and engineering innovations to
significantly increase shock resistance
while simultaneously reducing heat and
noise levels. As a result, the new IBM
Travelstar drives are ideally suited for
demanding, high-capacity Internet,
digital audio, video streaming, and real­time multimedia applications—whether
users are in the office or on the road.

The innovative hard drive design
combines IBM giant magnetoresistive
(GMR) head technology, Partial
Response Maximum Likelihood (PRML)
digital channel, a head load/unload
feature, a more rigid base casting than
previous models, Enhanced Adaptive
Battery Life Extender* (ABLE) 3.0, and
state-of-the-art manufacturing tech­niques. This design provides the
exceptional storage capacity, perfor­mance, power management, quality,
and reliability required by today’s
notebook systems.

Performance and reliability

IBM Travelstar drives include IBM drive
fitness technologies, a set of diagnostic
tools including IBM Drive Fitness Test*
(DFT) and Self-Monitoring Analysis and
Reporting Technology (S.M.A.R.T.). In
addition, the new IBM Travelstar 25GS,
18GT, and 12GN drives employ a
thermistor, an adaptive control device
that helps maintain high performance
and fast seek times at high environmen­tal temperatures.

IBM Travelstar 25GS 17-mm 5400 RPM,
25 GB ATA-4 hard drive

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IBM Travelstar 25GS 17-mm 5400 RPM,
25 GB ATA-4 hard drive

IBM Travelstar hard disk drive characteristics

Feature Benefit

First 5400 RPM mobile hard drive IBM Travelstar 25GS provides outstanding

First 25 GB mobile hard drive IBM Travelstar 25GS has the capacity to enable

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

High areal density of 10.1 Gbits/sq. in. IBM Travelstar 18GT and 12GN maximize areal density
and 6 GB of capacity per disk to enable more data storage per disk in standard,

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

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IBM Travelstar 18GT 12.5-mm 4200 RPM,
18 GB ATA-4 hard drive

performance and seek times at near-desktop
equivalence without sacrificing high capacity

mobile users to work with a new range of emerging
storage-intensive applications

reliability and extending drive lifetime

compact packages

performance possible

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IBM Travelstar 12GN 9.5-mm 4200 RPM,
12 GB ATA-4 hard drive

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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 superior­quality hard drives backed by a three­year warranty and IBM technical support
and services.