Connecting one Expansion shelf to the Primary shelf

The Expansion shelf connects to the Primary shelf but it does not connect directly to the compute nodes.

Note:

The orientation of the blue tabs on the ends of the SAS-3 cables is important.

In the appliance, the blue tabs on each SAS-3 connector must face as shown in the diagram.

In the storage shelves, the blue tabs on each SAS-3 connector must face as shown in the diagram:

To connect one Expansion shelf to the Primary Shelf

Verify that all compute nodes and the Primary Shelf are off and that the power cords are unplugged.
Do not remove the cables between the compute nodes and the Primary shelf.
Obtain the two SAS3 cables that ship with the Expansion shelf.
Identify the single SAS3 port on the left side of each controller module in the Primary shelf.
Identify ports A and C in each I/O module in the Expansion shelf. Port B is not available for use.
IMPORTANT: Note the correct orientation of the blue tab on each end of the SAS3 cables. The blue tabs must face down in the ports that connect the storage shelves.
For the SAS3 cables that connect the Primary shelf to the compute nodes the blue tabs must face up.
Connect one cable to each of the SAS3 ports on the left of each controller module on the Primary shelf.
Connect the other end of each cable to port A in each I/O module in the Expansion shelf.
Verify the final cable configuration.
Connect the power cords of all devices as described in this section.
Turn on the devices in the proper sequence as described in this section.
See Turning on the hardware and verifying operation.
Add the new disk space as described this section.
See Adding the disk space of an Expansion Storage Shelf from the Access Appliance shell menu.