Chapter 2 Installing Trays 45
Cabling an Expansion Tray to a Controller Tray
A Controller tray has two expansion ports, one on the Controller A module and one
on the Controller B module. To connect an expansion tray, connect an SAS cable
from each expansion port on the controller to each In port on the expansion tray.
FIGURE 2-18 shows a 1x2 array configuration consisting of one controller tray and one
expansion tray. Two SAS cables are required.
FIGURE 2-18 1x2 Array Configuration Cabling Example
To cable a 1x2 array configuration:
1. Locate the Controller A and Controller B expansion ports at the back of the
controller tray (
FIGURE 2-16).
2. Locate the In and Out expansion ports at the A-side and B-side back of the
expansion tray (
FIGURE 2-17).
3. Connect one SAS cable between the Controller A expansion port and the A-
side In port on the expansion tray (
FIGURE 2-18).
4. Connect one SAS cable between the Controller B expansion port and the B-
side In port on the expansion tray (
FIGURE 2-18).
Cabling an Expansion Tray to Another Expansion
Tray
Each additional expansion tray is added to the preceding expansion tray by
connecting SAS cables from the Out ports of the first tray to the In ports of the next
tray.
FIGURE 2-19 illustrates a 1x3 array configuration consisting of one controller tray
A
B
Controller Tray
Expansion Tray
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