IBM DTCA-23240, DTCA-24090 Reference Guide

Evolving technology to extend industry leadership,
IBM Travelstar continues to be the best storage decision
for the laptop computing market

IBM Travelstar 4GT 2.5-Inch

3.2 and 4.0 GB Low Profile Disk Drives

Highlights

Industry leading performance

Offering the first 3.2 and 4.0 GB capaci­ties in the industry standard 12.5mm
profile, Travelstar 4GT provides storage
solutions for mobile and network
connected applications. Performance
enhancements include increased data
buffer size (now 512KB), a new Interface
Transfer Rate of 33.3 MB/sec, and the
industry’s first mobile implementation of
the Ultra DMA /33 interface.

Improved power management

IBM’s proven Enhanced Adaptive
Battery Life Extender
a third idle mode, in addition to Perfor­mance Idle mode and Low idle mode,
and selects the idle mode based on the
individual user’s access patterns.

Superior durability

The new Travelstar 4GT extends the proven
Travelstar ruggedness to now withstand up
to 600 G/2 ms non-operating shock and
100 G/2 ms operating shock, without
sacrificing performance or reliability.

TM

2.0 introduces

These include IBM’s advanced head
technology, Magnetoresistive Extended
(MRX), NO-ID
Response Maximum Likelihood (PRML)
digital channel, and S.M.A.R.T. (Self
Monitoring Analysis and Reporting
Technology) protocol.

MRX advanced head technology
offers increased areal density, reducing
the number of disks and heads required.
Load/Unload technology allows the
Travelstar 4GT to fly these heads closer
to the disk surface, improving areal
density and performance. No-ID sector
formatting increases storage capacity by
eliminating the overhead caused by the
duplicate storage of each data sector’s
ID fields, resulting in more disk space
for a customer’s data. The PRML digital
channel allows higher areal densities
and significantly contributes to the
overall performance of the drive. S.M.A.R.T.
protocol support protects data availabil­ity and alerts a system of impending
drive failure.

The combination of IBM’s leading tech­nologies with the proven mechanical

TM

sector formatting, Partial

design of Travelstar 4GT provides a new
high capacity, high performance, and low
power dissipation benchmark for today’s
notebook operating systems. Travelstar
enables more availability of local and
remote network resources, such as the
Internet, with laptop applications.

Interface

The Travelstar 4GT has an ATA-3 interface
and supports a transfer rate of 33.3 MB/sec.
in Ultra DMA Mode-2 and 16.6 MB/sec. in
PIO Mode-4, providing optimum data
performance and industry compliance.

IBM quality and service

IBM drives are backed by an array of
technical support, qualification support,
and integration assistance. This compre­hensive support package is designed to
ensure that IBM customers can continue
to develop and manufacture high-quality,
cost-effective systems.

Leading drive technology

The Travelstar 4GT achieves its capacity,
performance, and low-power manage­ment capabilities by employing IBM’s
development and integration experience
in advancing disk drive technology.

Travelstar 4GT 2.5-inch 3.2 and 4.0 GB Low Profile Disk Drives DTCA-23240/-24090

G225-6708-00

Configuration Interface ATA-3

Device Capacity (Formatted) 3.24/4.09 GB

1

Sector Size 512 Bytes
Recording Zones 12
User Cylinders 6976
Data Heads 5/6
Disks 3
Areal Density (Maximum) 2.64 Gbits/sq. in.
Recording Density (Maximum) 211 KBPI
Track Density 12,500 TPI

Performance Data Buffer 512 KB

2

Rotational Speed 4000 RPM
Latency (Average) 7.5 ms
Media Transfer Rate 51.7 (inner), 83.4 (outer) Mbits/sec.
Interface Transfer Rate (Maximum AT) 33.3 MB/sec. Ultra DMA Mode-2

16.6 MB/sec PIO Mode-4
Seek Time (Typical Read)
Average 13 ms Track-to-Track 4 ms Full Track 23 ms

<

Reliability Error Rates (Non-recoverable)

1 per 1.0E 13 bits transferred

Load/Unload Cycles 500,000

Power Requirements + 5 VDC (5%)

Dissipation (Typical)

3

Startup (Max. peak) 0.94 Amps Performance Idle (Avg.) 1.85 Watts
Seek (Avg.) 2.3 Watts Active Idle (Avg.) 0.95 Watts
Read (Avg.) 2.2 Watts Low Power Idle (Avg.) 0.65 Watts
Write (Avg.) 2.3 Watts Standby (Avg.) 0.3 Watts

Sleep 0.1 Watts

Power Consumption Efficiency Index

4

0.0002 Watts/MB

Physical Size Height 12.5 mm

Width 70 mm
Depth 100 mm
Weight (Typical) 140 g

Environmental Characteristics Operating Non-Operating

o

Ambient Temperature 5 to 55

C -40 to 65o C

Relative Humidity (Non condensing) 8% – 90% 5% – 95%

o

Maximum Wet Bulb (Non condensing) 29.4

C 40o C
Shock (Half sine wave) 100 G/2 ms 600 G/2 ms
Vibration (Random (RMS) 0.67 G (5-500 Hz) 3.0 G (5-500 Hz)

(Swept sine) 1.0 G O-P (5-500 Hz) N/A

1

1 GB = 1,000,000,000 Bytes 2 Up to 44 KB used for firmware

1 MB = 1,000,000 Bytes

3

Dissipation is reduced by the Enhanced Adaptive Battery Life Extender 4 Idle Power Dissipation/Formatted Capacity

General product information for other IBM hard disk drive products is available by calling

1 800 IBM-2468 (1 416 383-5154 or fax [phone] outside of North America),
and asking for Dept. Star 30. Information is also available 24 hours a day, seven days a week,

via fax or Internet. For faxed information, contact IBM’s TECHFAX system by dialing 1 415 855-4773
from a touch tone phone. (International callers must call from a phone connected to a fax machine.)
Follow the voice prompts to order TECHFAX #7082 for information on the Travelstar 4GT or to receive
a TECHFAX directory. The Internet may be accessed at www.storage.ibm.com/oem.

Product description data represents design objectives and is provided for comparative purposes;
actual results may vary depending on a variety of factors. This product data does not constitute a
warranty. Questions regarding IBM warranty terms or the methodology used to derive this data
should be referred to an IBM representative. Data subject to change without notice.

©International Business Machines Corporation 1997.

Produced in the United States 5/97. All rights reserved.

®No-ID, Enhanced Adaptive Battery Life Extender, and IBM are registered trademarks of International

Business Machines Corporation.

IBM Corporation
Storage Systems Division
5600 Cottle Road
San Jose, CA 95193

European Headquarters
(44) 01-705-561-871

Japan Sales Branch Office
(81) 466 45-1039

Asia-Pacific Headquarters
(65) 320-1234

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