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Galaxy GHDX2-2430S/R-24F4D Installation and Hardware Reference Manual
Introduction
1-2
A SAS expansion port comes with each RAID controller and provides easy connectivity
to terabytes of expansion capacity over the 4x, wide SAS link cables.
Two (2) RS-232C (audio jack) serial port connectors are located on the controller
faceplate. One serial port (COM1) enables serial communication between the controller
and an external PC running terminal emulation software that can be used to configure and
manage the RAID subsystem. The second serial port (COM2) connects to an
uninterruptible power supply (UPS). An RJ-45 Ethernet connector allows telnet access
and web-based management using the included browser-based or Java-based versions of
the RAIDWatch manager software.
Disk drives in the front section of the subsystem are directly mated with a common
backplane. The backplane receives a maximum of twenty-four (24) SATA-II hard drives
that should be separately purchased.
Two (2) redundant, hot-swappable, dual-fan cooling modules protect the RAID
subsystem from overheating and three (3) redundant, hot-swappable, 1U 405W power
supply unit (PSU) modules provide constant power to the RAID subsystem. The modular
nature of the subsystem and the easy accessibility to all major components ensure that the
subsystem can be reliably and efficiently operated and maintained.
1.1.1 Enclosure Chassis
1.1.1.1 Chassis Overview
The Galaxy HDX2 24bay subsystem comes with a 4U compact steel chassis and
aluminum alloy framework for even distribution of component heat. A back-end PCB is
enclosed in thick gauge sheet metal that divides the enclosure internally into the front and
rear sections. (See Figure 1-2) The front section accommodates twenty-four (24) drive
trays (with their associated hard drives) and the rear section accommodates three (3) PSU
modules, two (2) dual-fan cooling modules, and RAID controllers in a single- or dual-
controller configurations. The two (2) foldable handles on the front of the chassis enable
you to easily extract the chassis from a rack cabinet. The subsystem enclosure can be
mounted into standard 19-inch rack cabinets using separately purchased slide rails.