Chapter 2: Installing the Chassis
QXS-6 Series Drive Chassis Cabling Illustrations
QX and QXS Setup Guide
83
QXS-6 Series Drive Chassis Cabling
Illustrations
This section covers the following systems:
l
QXS-648 (2U48)
l
QXS-656 (4U56)
Note:
For clarity, the schematic diagrams show only relevant details such as face-plate outlines and
expansion ports.
Note:
For 56 drive chassis, Controller A is located on the right, and Controller B is located of the left
side of the RAID chassis, as viewed from the back.
Dual-controller Chassis with 1 Drive Expansion Chassis
Figure 81 below shows a dual-controller chassis cabled to an expansion chassis featuring dual-expansion
I/O modules. Controller I/O module 0A is connected to expansion module 1A (blue). Controller I/O module
0B is connected to expansion module 1B (green).
Figure 81:
Cabling connections between a dual-controller chassis and one expansion chassis
RAID
Chassis 0
Expansion
Chassis 1
In
Out
In
Out
A
0
B
0
1A
1B
Controller A
Controller B
Reverse Cabling
Figure 82 on the next page shows reverse cabling (diagram on left) of a dual-controller RAID chassis and 3
expansion chassis configured with dual-expansion I/O modules. Controller module 0A is connected to
expansion I/O module 1A, with a chain of connections cascading down (blue). Controller I/O module 0B is
connected to the lower expansion I/O module (4B), of the last expansion chassis, with connections moving
in the opposite direction (green). Reverse cabling allows any expansion chassis to fail—or be removed—
while maintaining access to other expansion chassis.
