Unless noted otherwise, this document and the information herein
disclosed are proprietary to Glyph Technologies, 227 Cherry St.
Ithaca, NY 14850 (“GLYPH”). Any person or entity to whom this
document is furnished or having possession thereof, by acceptance,
assumes custody thereof and agrees that the document is given in
confidence and will not be copied or reproduced in whole or in part,
nor used or revealed to any person in any manner except to meet the
purposes for which it was delivered. Additional rights and obligations
regarding this document and its contents may be defined by a separate
written agreement with GLYPH, and if so, such separate written
agreement shall be controlling.
The information in this document is subject to change without notice,
and should not be construed as a commitment by GLYPH. Although
GLYPH will make every effort to inform users of substantive errors,
GLYPH disclaims all liability for any loss or damage resulting from the
use of this manual or any software described herein, including without
limitation contingent, special, or incidental liability.
This document is a brief introduction to Glyph’s GT 205, a
double-space rack, five-bay FireWire hot-swap enclosure for GT Key™
cartridges, and other storage devices.
Notes alert you to important information. They are indented and
preceded by the word Note in bold type.
Cautions
Cautions alert the user to actions or situations that can result in
damage to users or data. Cautions are accompanied by a triangle icon,
as in the example below.
C
AUTION:
If the container is damaged, file a report with the carrier or dealer
immediately.
Proprietary Notice and DisclaimerQuick Guide #610019-1.02
Glyph’s GT Series, p. 4
About the GT 205, p. 7
Unpacking Your GT 205, p. 12
Installing and Connecting the Hardware, p. 13
Preparing Your Drive for Use: Mac OS 9 Users, p. 14
Preparing Your Drive for Use: Mac OS X Users, p. 15
Preparing Your Drive for Use: Windows Users, p. 16
Care and Maintenance of the GT 205, p. 20
Troubleshooting, p. 22
GT 205 Specifications, p. 23
Audio Storage Guide, p. 24
Glyph’s GT Series
GT 205
The GT Series is a cross-functional line of FireWire-based storage
subsystems designed for mobility and easy expansion:
GT Key - A hot-swappable FireWire Drive
GT 050 - A Fixed-Mount FireWire Tabletop Drive
GT 051 - A Tabletop One-bay enclosure for GT Key drives
GT 103 - A One-space Thee-bay enclosure for GT Key drives
The GT Series incorporates Glyph’s own advanced FireWire
technology called Integrity™. Inspired by the limitations of existing
hybrid ATA-to-FireWire hot-swap products, Glyph engineers resolved
the data integrity problems that arise from breaking at the ATA
interface by incorporating unique enhancements to existing FireWire
standards. As a result, the GT Key drive cartridge contains the
ATA-to-FireWire bridging technology in the cartridge itself. When
removing a hard drive from the receiver, the drive and its bridge
remain together to support hard drive hot-swapping in the proper
way—using circuits and protocols that are intended for hot-swap
applications. The GT Series sets new standards as Glyph’s Integrity™
technology surpasses today’s other hot-swappable storage.
FireWire is an implementation of the IEEE 1394 serial bus standard. It
not only supports automatic configuration ("plug and play") and
hot-swapping of devices, it’s fast, and best of all it’s reliable for
audio/video as well as for computer peripherals.
FireWire supports peripherals in a tree-like structure, as opposed to
SCSI's linear structure. It allows peer-to-peer device communication—
e.g. between a scanner and a printer—to take place, without using
system memory or the CPU.
With FireWire you don’t have to worry about IDs or device
termination; you can hook up to 63 devices to the same bus, with cable
lengths of up to 4.5 meters (14 feet) including internal cabling, allowed
between devices.
Its cable is not only more convenient than SCSI’s but can also carry
power. This allows low-consumption devices to operate without a
separate power cord, by using power supplied by other devices on the
bus.
Components in GT Series enclosures are of the highest quality
possible. These include:
•Heavy-gauge internal power cabling to carry current with minimal loss
•Bridge circuit boards designed to provide extra functions and top
performance
•High-quality data cables to maintain signal integrity at high data
rates
We use Teflon ribbon cables in our GT Series FireWire solutions
because Teflon is the best insulator for minimizing cross-talk and
maintaining high-frequency signal integrity. Good insulation
maintains signal quality. Maintaining signal quality ensures maximum
data transfer rates.
Elimination of Acoustic Noise
GT Series enclosures and the GT Key incorporate sound-damping
metal to support quiet recording by virtually eliminating noise caused
by the vibrations of hard drives and fans.
This material is a constrained-layer composite—a laminate formed of
two layers of metal sandwiching a viscoelastic polymer core. Vibration
felt by the metal layers is dampened by the softer center layer: the
deformation of the core facilitates the absorption of vibrational
energy. The combination of quiet metal and secure fastening with
sturdy steel mounting hardware helps to ensure a still, quiet
environment for your recording sessions.
Glyph uses efficient, high-quality power supplies, selected specifically
for the demands of production environments.
Our power supplies have a large amount of headroom, so your Glyph
system will function, for brief periods of time, with AC lines
significantly below specified limits.
Glyph FireWire devices, even when they’re not turned on, will pass
signal and bus power through to downstream FireWire devices.
Glyph’s FireWire solutions are 100% compliant with FireWire
specifications for reliable operation using FireWire’s repeater
functionality.
About the GT 205
The GT 205 is a double-space five-bay FireWire enclosure. It can be
configured with four GT Key hot-swappable FireWire drives in any
available capacities, and its SCSI/FireWire expansion bay offers the
option of AIT backup, SCSI or FireWire hot-swap receiving bay,
DVD-R/RW or CD-R/RW. The four standard GT Key FireWire
hot-swap drive bays on the GT 205 are connected together using an
internal FireWire hub, and have two out-facing FireWire ports, which
are the lower connectors on the rear of the chassis. If the device in the
expansion bay is SCSI, it uses two SCSI connectors on the rear of the
chassis. If the expansion bay device is FireWire, it uses two additional
FireWire ports on the rear of the chassis. The expansion bay ports are
always the upper ports on the back of the chassis.