Chapter 3. Restarting And Powering Down A System With Logical Partitions; Changing Logical Partition Power Schedule; Powering Down A System With Logical Partitions - IBM AS/400e Manual

Chapter 3. Restarting and powering down a system with
logical partitions
At times you will need to start (perform an initial program load (IPL)) or power down the entire system or a
single partition.
It is important to remember that when you perform an IPL on the primary partition you could perform an
IPL on all the secondary partitions. This depends on how you set the Sys IPL Action field in the Work with
Partition Status display. For more information on starting your secondary partitions with a system IPL, see
"Restarting a secondary partition on system IPL" on page 18 and "Holding a secondary partition from
restarting on system IPL" on page 19.
If you power down the primary partition, you will also power down any secondary partitions that are
running. Unless you power down the secondary partitions before the primary partition, any secondary
partitions that are still running will have an abnormal IPL.
Refer to the Starting and Stopping the System chapter of AS/400 Basic System Operation, Administration,
and Problem Handling for more information on abnormal IPLs.
Some the IPL tasks you can perform are as follows:
v Changing a logical partition power schedule.
v Powering down the system.
v Restarting the system.
v Changing operating mode for a logical partition.
v Changing the IPL source for a logical partition.
v Restarting a secondary partition on system IPL.
v Holding a secondary partition from restarting on system IPL.

Changing logical partition power schedule

You can schedule when a secondary partition will power on and power off by changing the IPL Date and
Time (QIPLDATTIM) system value. You can change the QIPLDATTIM system value by using the GO
Power or Change Power Schedule (CHGPOWRSCD) COMMAND.
At a command line on a secondary partition workstation, use the GO POWER or CHGPWRSCD command
to change a secondary partition power schedule.
When you schedule a secondary partition to power on, ensure that it is only during a time when the
primary partition is already on. You have to power on the primary partition before you can power on any
secondary partitions.
See the What You Need to Know About Your AS/400 System chapter of, AS/400 Basic System Operation,
Administration, and Problem Handling for more information about power schedules.

Powering down a system with logical partitions

Powering down a secondary partition
You can power down a secondary partition by using the OS/400 power down system (PWRDWNSYS)
command.
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