Chapter 1. Controlling Logical Partitions With Dst And Sst - IBM AS/400e Manual

Chapter 1. Controlling logical partitions with DST and SST

On a system without logical partitions, you can use the control panel to perform many tasks. However, for
systems with logical partitions, secondary partitions do not have physical control panels. To control your
logical partitions you can use menu options in dedicated service tools (DST) and system service tools
(SST). These menu options act as a virtual control panel.
Security considerations
You can restart and reconfigure logical partitions from the primary partition by using DST. Therefore, an
unqualified person with access to DST could unintentionally cause severe damage to your system. For this
reason you should limit the number of people who have the password to DST and who have access to the
control panel.
DST versus SST
You control logical partitions essentially the same way in DST and SST. You can perform some logical
partition configuration actions only in DST. However, since SST is easier to access than DST, you should
use SST whenever possible.
To use SST or DST go to Starting SST and DST.
This table describes the capabilities that are available to logical partitions from the Work with system
partitions display (option 11, DST), or (option 5, SST).
Primary Partition
DST Display all logical partition information
Change IPL status on primary and secondary logical
partitions
Change operating mode on primary and secondary logical
partitions
Perform main store dumps
Power on or off primary and secondary logical partitions
Change processing and I/O configuration of primary and
secondary logical partitions
Perform recovery functions for secondary partitions
Create and delete secondary partitions
SST Display all logical partition information
Change I/O configuration of primary and secondary partitions
When the system is not in secure mode it can:
v Change operating mode
v Change logical partition status
v Perform main store dumps
v Power on and off secondary partitions
|
v Force DST on the primary partition or secondary partitions
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Secondary Partition
Display its own logical partition
information
Perform limited recovery functions on
itself
When the secondary partition is not in
secure mode it can:
v Change IPL status on itself
v Change operating mode on itself
v Perform main store dumps on itself
v Power itself off
Display its own logical partition
information
When the secondary partition is not in
secure mode it can:
v Change IPL status on itself
v Change operating mode on itself
v Perform main store dumps for itself
v Power itself off.
v Force DST on itself
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