Connecting two Expansion Shelves to the Primary Shelf
Both Expansion Shelves connect to the Primary Shelf but not directly to the compute node.
Note:
To connect two Expansion Shelves to the Primary Shelf
- Verify that the nodes and existing RBOD storage shelf are powered on. The nodes and storage shelf must remain powered on throughout the expansion process.
Do not remove the cables between the compute nodes and the Primary Shelf.
- Connect the newly added EBOD (s) power cords as described in this section.
- Power on the newly added EBOD(s).
- The 5U84 EBOD spins up drives in a staggered manner. Allow a minimum wait time of 5 minutes for all 84 drives to become operational.
- Obtain the two SAS-3 cables that ship with each Expansion Shelf.
- Identify the single SAS-3 port on the right 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.
Connect the cables as follows:
Connect one cable to each SAS‑3 port on the right side of each controller module on the Primary Shelf (RBOD controller expansion ports).
Connect the left cable from the Primary Shelf to port A on the left I/O module of the closest Expansion Shelf (first Expansion Shelf).
Connect one end of a new cable to port C on the left I/O module of the first Expansion Shelf.
Connect the other end of this cable to port A on the left I/O module of the second Expansion Shelf.
Connect the right cable from the Primary Shelf to port A on the right I/O module of the farthest Expansion Shelf.
Connect one end of a new cable to port C on the right I/O module of the second Expansion Shelf.
Connect the other end of this cable to port A on the right I/O module of the first Expansion Shelf.
- Verify the final cable configuration.
- Add the new disk space with the instructions in one of these sections.
See Adding the disk space of an Expansion Storage Shelf from the Flex Appliance Console.
