Sun Microsystems 2500 manual Connecting the Power Cables, Intertray Cabling

Connecting the Power Cables

1.Verify that both power switches are turned off.

2.Verify that the circuit breakers in the cabinet are turned off.

3.Connect each power supply in the tray to a separate power source in the cabinet.

4.Connect the primary power cables from the cabinet to the external power source.

Note – Do not power on the array until you complete the procedures in this chapter. The power-on sequence is described in detail in Chapter 4.

Intertray Cabling

This section describes how to cable a controller tray to expansion trays for several different configurations. Each controller has one expansion port (FIGURE 2-16). Controller A controls drive channel 1 through the A-side drive modules; Controller B controls drive channel 2 through the B-side modules. Each drive channel provides a separate path for data transfer from the controller tray to the expansion trays; the two channels provide redundancy.

FIGURE 2-16Expansion Ports on the Controller Tray

SAS Expansion Ports to the Expansion Tray

Link Link

Link Link Link Link

1 HOST

S	2	S	3
S
A
		S	HOST
		A

Link Link

DRIVE EXPANSION

S

A

S

Link Link

Link Link Link Link

1 HOST

S	2	S	3
S
A
		S	HOST
		A

Link Link

DRIVE EXPANSION

S

A

S

Each expansion tray has two SAS port connectors, one marked with an up arrow and the other marked with a down arrow (FIGURE 2-17). You use SAS cables to connect expansion trays to controllers.

42 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007