Connecting disk shelves to a FAS270c

Put on the antistatic wrist strap and grounding leash.

Note
Hot-adding a disk shelf to a FAS270c is supported; therefore, you do not need to power off the equipment when adding a disk shelf.

At the rear of your FAS270c, confirm that the terminate switches on both CPU modules are set to Off.

Confirm that the FAS270c shelf ID is set to 1.

Connect the blue Fibre Channel port on Node B to the disk shelf LRC B or ESH2 B module Input port of your second disk shelf.

Connect the blue Fibre Channel port on Node A to the LRC A or ESH2 A module Input port of the same disk shelf. Make sure that the cables on the disk shelf are tight.

Caution
Do not use ESH modules in place of LRC or ESH2 modules. The FAS270/FAS270c cannot use ESH modules.

Attach the grounding cable between shelves, as shown in the illustration.

Set the disk shelf ID switch on your second disk shelf to 2, and set the disk shelf loop speed to 1 Gb.

LRC modules are shown in the figure.

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 both LRC modules 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 ESH 2 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 both LRC modules to Off and proceed to Step 7.

You are adding another disk shelf to a system using ESH2 modules

Proceed to Step 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. Cable the disk shelf LRC A or ESH2 A module Output port of your second disk shelf to the LRC A or ESH2 A module Input port of your third disk shelf. Make sure that the cable connections on both disk shelves are tight.

Attach the grounding cable between shelves, as shown in the illustration.

Set the disk shelf ID switch on your third disk shelf to 3, and set the disk shelf loop speed to 1 Gb.

Set the terminate switch on the third disk shelf to On, and then and proceed to Connecting your system to a power source.