Products Owner's manual

R-Series Data Center Products User’s Guide Chassis and Blade Installation • 35

blades (configured by daisy-chaining the spare connections). Figure 23 on page 35

shows these sparing scenarios as examples.

Figure 23 Spare Allocation Examples

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

even-numbered port (for example, 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

NOTE

Sparing is a switching function of the R4300 chassis. If no spare

blade is connected to the Spare Daisy Chain, or if the Spare

blade is completely powered down, the spare switch action will

succeed but the user will not be connected to a usable blade.

Spare Ratio 1:7

7654321

Chassis 1

Chassis 2

Chassis 3

Chassis 4

Chassis 5

Chassis 6

Spare Ratio 1:47