Chapter 1
Preface
This guide presents a wide range of technical information and procedures for using
the OpenText Tableau Forensic TD4 Duplicator, a product of OpenText. It is divided
into the following chapters:
Overview: Provides general information about TD4 as well as unpacking, starting
up, and navigating TD4 menus and reading the LEDs.
Configuring TD4: Provides system overview information about TD4 as well as
procedures for configuring and connecting it.
Using TD4: Provides detailed information and procedures for TD4 operation.
Adapters: Describes the adapters that extend the drive acquisition options and
destination drive capabilities of TD4.
Specifications and troubleshooting: Provides TD4 specifications and a brief list of
potential problems and solutions. For more complete and current troubleshooting
information as well as answers to frequently asked questions (FAQ), visit OpenText
My Support (https://support.opentext.com).
1.1 Drive capacity and transfer rate measurement
conventions
The computer industry generally adheres to two different conventions for
definitions of the terms megabyte (MB) and gigabyte (GB). For computer RAM, 1
MB is defined as 2
20
= 1,048,576 bytes and 1 GB is defined as 2
30
= 1,073,741,824
bytes. For drive storage, 1 MB is defined as 10
6
= 1,000,000 bytes and 1 GB is defined
as 10
9
= 1,000,000,000 bytes. These two conventions are known as powers of two and
powers of ten respectively. Microsoft deviates from the hard drive capacity
measurement convention and uses the powers of two convention for its operating
systems.
Tableau products report drive capacities and transfer rates according to the industry
standard powers of ten convention. In TD4 screens, reports, and documentation, a 4
GB hard drive stores up to 4,000,000,000 bytes; a hard drive with a 150 MB/sec
transfer rate transfers 150,000,000 bytes per second.
ISTD230100-UGD-EN-1
User Guide
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