Chapter 2 Installing Trays 51
6. Connect one SAS cable between the expansion tray 2 Out port and the A-side
expansion In port of expansion tray 3 (
FIGURE 2-20).
7. Connect one SAS cable between the expansion tray 3 B-side Out port and the
B-side In port of expansion tray 2 (
FIGURE 2-20).
8. Connect one SAS cable between the expansion tray 2 B-side Out port and the
B-side In port of expansion tray 1 (
FIGURE 2-20).
Tray Interconnect Cable Labeling
Labels for the drive-side interface cables identify which controller ports and which
I/O module ports in an expansion tray you use when you attach cables between a
controller tray and the drive expansion tray. Cable labels are useful if you need to
disconnect cables to service a controller.
Attach a label to each end of the cable. Use this design to create labels for drive
cables:
■ Controller ID (for example, Controller A)
■ Drive expansion tray ID (for example, Tray A)
■ Expansion port ID (for example, In or Out)
■ I/O module ID
Example Label Abbreviation
In this example, the storage configuration has the following characteristics:
■ Drive channel 1
■ Controller A, drive channel 1
■ IO module 1
■ Expansion Tray A-Left Out port (left I/O module out port)
Using this design, the label includes the following information:
CtA-Dch1, Dm1-Tray_A (left), Out
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