System information

72 Logical Partitions on System i5
򐂰 The Create option is taken to create a new logical partition. This is covered in detail in
Chapter 5, “Partition creation using the HMC” on page 139.
򐂰 The Capacity on demand option is provided as the management panels for the CoD
function.
򐂰 The power off option will power off the entire managed system, which includes all the
partitions. This option needs to be used with caution.
You should use the Power Down System (PWRDWNSYS) command from i5/OS. The
Power Off partition or Power Off server options in HMC are equivalent to Function 8 or
hitting the white power button twice on an existing 8xx server. This will not allow the server
to shut down in an orderly manner.
You should be especially careful if you have integrated Windows servers. The time to shut
down the Windows server™ must be taken into account when you power down the
system. There is a new Network Server Description parameter in i5/OS V5R3 Shut Down
Timer (SHUTDTIMO) that specifies how much time Windows servers are give to power
down. This tries to prevent you powering down the server to quickly and causing the
integrated Windows servers to crash.
򐂰 Disconnecting another HMC forces a second HMC to release its lock on the server. See
Figure 3-30.
Figure 3-30 Disconnect another HMC
Very Important: Powering off an i5/OS partition from the HMC should only be used if all
other options fail.