Connecting disk shelves to a FAS270

Connecting disk shelves to a nonclustered system

To connect your nonclustered FAS270 to additional disk shelves, complete the following steps.

Step	Action
1	Put on the antistatic wrist strap and grounding leash. Note Hot-adding a disk shelf to a FAS270 is supported; therefore, you do not need to power off the system when adding a disk shelf.
2	At the rear of your FAS270, confirm that the terminate switch on the CPU module is set to Off. Confirm that the FAS270 shelf ID is set to 1.
3	Cable the blue Fibre Channel port on the CPU module to the disk shelf LRC B or ESH2 B module Input port of your second disk shelf. Make sure that the cable connection on the disk shelf is tight. Caution Do not use ESH modules in place of LRC or ESH2 modules. The FAS270/FAS270c cannot use ESH modules.
4	Attach the grounding cable between shelves, as shown in the preceding illustration.
5	Set the disk shelf ID on your second disk shelf to 2, and set the disk shelf loop speed to 1 Gb.
6	If...	Then...
	This is the only disk shelf you are adding to your system, and your system uses LRC modules	Set the terminate switch on the back of your disk shelf to On, and proceed to Connecting your system to a power source.
	This is the only disk shelf you are adding to your system, and your system uses ESH2 modules	Proceed to Connecting your system to a power source.
	You are adding another disk shelf to a system using LRC modules	Set the terminate switch on your disk shelf to Off, and proceed to Step 7.
	You are adding another disk shelf to a system using ESH2 modules	Proceed to Step 7.
7	Cable the disk shelf LRC B or ESH2 B module Output port of your second disk shelf to the LRC B or ESH2 B module Input port of your third disk shelf. Make sure that the cable connections on both disk shelves are tight.
8	Attach the grounding cable between shelves, as shown in the illustration.
9	Set the disk shelf ID on your third disk shelf to 3, and set the disk shelf loop speed to 1 Gb.
10	If...	Then...
	Your system uses LRC modules	Set the terminate switch on the third disk shelf to On, and power on your disk shelf. See Connecting your system to a power source.
	Your system uses ESH2 modules	Power on your disk shelf. See Connecting your system to a power source.