Toggling partitions by using the IMM Telnet interface

Note: Before you toggle a partition to Standalone mode, make sure that all the nodes in the partition are powered off.

A partition can be in either of two modes: Standalone and Partition. When the partition is in Standalone mode, each node operates independently. When the partition is in Partition mode, all the nodes in the partition boot as a single system.

The command to toggle the partition is scale -mode standalonepartition -partid id.

For example, to set partition 1 in Standalone mode, type scale -mode standalone -partid 1.

Starting, stopping, and resetting by using the IMM Telnet interface

There are three additional partition commands that you can use with the IMM

Telnet interface: start, stop, and reset.

You can use the start command (scale -start {-partid id -node nodeid}) to start a partition or node. When you use this command, if the node is in a partition and the partition is not in Standalone mode, all the nodes in the partition will power on. For example, to start partition 1, type scale -start -partid 1.

Use the reset command (scale -reset {-partid id -node nodeid}) to reset a partition or node. When you use this command, if the node is in a partition and the partition is not in Standalone mode, all the nodes in the partition will be reset.

Use the stop command (scale -stop {-partid id -node nodeid}) to shut down a partition or node. When you use this command, if the node is in a partition and the partition is in Standalone mode, all the nodes in the partition will power off.

For example, to stop node 8bb9, type scale -stop -node 8bb9.

Configuring a QPI multi-node system

A multi-node configuration interconnects multiple servers or multiple partitions. This configuration requires 8 microprocessors and 16 memory cards (4 microprocessors and 8 memory cards per node). See the documentation that came with your QPI cables to set up your QPI multi-node configuration.

Before you create scalable partitions, make sure that all the nodes in the multi-node configuration contain the following software and hardware:

vThe current level of UEFI code, SAS UEFI code, IMM firmware, and FPGA firmware

Note: To check for the latest firmware levels and to download firmware updates, go to http://www.ibm.com/supportportal/.

vMicroprocessor that are the same cache size and type, and the same clock speed

Note: The nodes can vary in the number of microprocessors and the amount of memory each contains, above the minimum.

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IBM 71453RU manual Configuring a QPI multi-node system, Toggling partitions by using the IMM Telnet interface