Chapter 6
Troubleshooting and Installation-Related Tasks
Determining the Location of the Core I/O Card
117
Determining the Location of the Core I/O Card
After you power on the SPU cabinet (48 V), the next step is to determine in which card cage the Core I/O is
located.
To determine the location of the Core I/O card:
Step 1. From the Guardian Service Processor (GSP) Command menu, enter du.
A screen similar to the following appears:
Figure 6-3GSP du Screen
Step 2. Verify that there is an x in one of the columns marked 0-3, in the section of the screen marked Core
IO.
NOTE If there is no x in the Core I/O section of the screen, you will have to install a Core I/O
card.
A maximum of four 12-slot or eight 6-slot card cages may be present in a SPU cabinet. Likewise,
any combination of 12- and 6-slot card cages adding up to 48 or fewer slots are possible. There are
two Master I/O Backplanes (MIOB), one at the front (MIOB0) and one at the back (MIOB1) of the
SPU cabinet. Each MIOB can contain a maximum of two 12-slot or four 6-slot card cages.
NOTE On the du command screen, MIOB0 and MIOB1 are referred to as I/O Bay 0 and I/O
Bay 1, respectively. I/O Bay 2 and I/O Bay 3 are not present on Superdome systems.
Step 3. Find the x in the Core I/O section of the screen and note the location.
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