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Chapter 2 Installing Trays 47
6. Connect one SAS cable between the expansion tray 2 B-side Out port and the
B-side In port of expansion tray 2 (
FIGURE 2-19).
Drive Module Cable Labeling
Labels for the drive cables identify which controller ports and which expansion
connections in an expansion tray you use when you attach cables between a
controller and the drive modules on an 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)
■ Expansion tray ID (for example, Tray A)
■ Expansion port ID (for example, In or Out)
■ Drive module ID
Example Label Abbreviation
In this example, the storage configuration has the following characteristics:
■ Drive channel 1
■ Controller A, drive channel 1
■ Drive module 1
■ Expansion Tray A (which is the left drive module), Out port
Using this design, the label includes the following information:
CtA-Dch1, Dm1-Tray_A (left), Out
Simplex Configurations
A simplex configuration is a 2530 Array with a single controller and a single
backend channel. By definition, there is a single path SAS connection to the data
host, and no redundancy is available. There can be expansion modules on the single
backend channel.