User`s guide

48 • Chassis and Blade Installation R Series Data Center Products User’s Guide, Rev. B

For a dual-processor PC blade, verify that the C/Port cable is plugged into the even-

numbered port (e.g., for a PC blade installed in chassis slots 3 and 4, the C/Port cable

should be plugged into port 4).

R4300 Chassis

To connect cables to R4300-equipped chassis, do the following:

1. Label, identify, or use different color cables to discriminate between desktop and

network wiring. This color code is recommended, and matches the jumper cables

provided by ClearCube:

• Control Chain – Green

• Admin Daisy Chain – Yellow

• Spare Daisy Chain – Red

2. Daisy-chain the CONTROL OUT port on the top chassis in the rack to the next

lower chassis’ CONTROL IN port using the green daisy-chain cable. Continue this

daisy chain to connect all chassis in the rack.

3. Connect the MANAGEMENT port on at least one of the RMMs to your Ethernet

network hub or switch. For the best reliability, connect redundant RMMs to more

than one switch and/or subnet to better protect against network-related failures.

As many as 14 RMMs per Control Chain (all of them) can be connected to the

network to provide failover capability. In practice, three is probably enough.

NOTE: Do not use an Ethernet port on the chassis for this connection.

4. Skip this step if installing only I/Ports, or if using a chassis with an ACM. Connect

eight C/Port cables from the XCM ports marked C/PORT to the patch panel going

to your desktops. If using dual-processor PC blades, plug the C/Port cable into the

even-numbered port for the two slots occupied by the blade, and leave the

odd-numbered port empty (e.g., for a PC blade installed in chassis slots 3 and 4,

the C/Port cable should be plugged into port 4).

Figure 22 Spare Allocation Examples

Spare Ratio 1:7

7654321

Chassis 1

Chassis 2

Chassis 3

Chassis 4

Chassis 5

Chassis 6

Spare Ratio 1:47