Installation and Migration Guide

Removing an SP expansion I/O unit from an existing node

Perform the following steps to remove an SP expansion I/O unit from an existing node.

Step 1: Archive the SDR

Before removing an SP expansion I/O unit from an existing node, you should back up the SDR by issuing:

SDRArchive

Note the location and the name of the file created after you issue this command.

Step 2: Shut down the node and power it off

Prior to shutting down the node that you are deleting the SP expansion I/O unit from, make a list of all the applications and programs running on the node (such as LoadLeveler) and stop them from running.

Use Perspectives or the cshutdown command to shut down the nodes. For example, issue:

cshutdown -G -N 45

Step 3: Disconnect and remove the SP expansion I/O unit

Your IBM Customer Engineer (CE) performs this step. See RS/6000 SP: Installation and Relocation for instructions.

Step 4: Remove the SP expansion I/O unit definition from the SDR

Use the spdelexp command on the control workstation to remove an SP expansion I/O unit definition from the SDR. For example, issue:

spdelexp -x 4,5,7

Step 5: Power on the node

Power on the node using the cstartup command. For example:

cstartup -G -N 45