Powering down a system with logical partitions

The proper way to power down a partition is by using the IBM® i power down system (PWRDWNSYS) command. If the partitions were created by VPM(Virtual Partition Manager), you could power down a partition by using IBM Navigator for i.

From a command line at a workstation on that partition type PWRDWNSYS OPTION (*CNTRLD) DELAY (600) and press Enter.

If the partitions were created by IVM or HMC, you will not affect any other logical partitions. This command is the preferred way to power down a partition.

If the partitions were created by Virtual Partition Manager, you could power down a client partition by using IBM Navigator for i.

To power off partition by IBM Navigator for i, follow these steps:

  1. In IBM Navigator for i of hosting partition, expend Configuration and Services.
  2. Select Partitions.
  3. Right click the partition you want to power off and select Power Off.
Note: The power off option is only available when the client partition is in "Manual" IPL mode. The power off option for hosting partition is only available when all client partitions are powered off.

There are two options for power off:

Delayed power off

When you use the delayed power off option, the partition waits a predetermined amount of time to power down. This allows the partition time to end jobs and write data to disks. If the partition is unable to shut down within the predetermined amount of time, it will end abnormally and the next restart may take a long time.

Immediate power off

When you select the immediate power off option, the system powers down without any preset delay. This may cause an abnormal IPL of the logical partition and possibly cause loss of data.