HP PRM Version C.03.04 Release Notes for HP-UX 11i v1, HP-UX 11i v2, and HP-UX 11i v3

PRM Release Notes
Compatibility information and installation requirements
Chapter 1 15
Compatibility with HP Integrity Virtual Machines
HP Integrity Virtual Machines (Integrity VM) is a robust soft partitioning and virtualization
technology that provides operating systems isolation, shared CPU (with sub-CPU
granularity), shared I/O, and automatic, dynamic resource allocation. It is available for
HP-UX 11i v2 running on HP Integrity servers.
Given a system with Integrity VM installed, you can run PRM inside any of the virtual
machines; however, you cannot run PRM on the VM Host as the vm_fssagt already controls
FSS groups on behalf of Integrity VM.
NOTE Do not specify disk bandwidth records for configurations used inside virtual
machines.
Compatibility with processor sets (PSETs)
PRM allows you to define PRM groups based on PSETs.
NOTE When you have PRM groups based on PSETs, disable PRM to perform any of
the following operations:
• Modify the PSETs manually using the psrset command
• Adjust core (CPU) counts in virtual partitions using the vparmodify
command
• Adjust Instant Capacity (iCAP), Temporary Instant Capacity (TiCAP), or
Pay Per Use resources using the icapmodify or ppuconfig commands
• Perform online cell operations, using parolrad or any other interface, while
PRM is managing the system (For more information, see the WARNINGS
section in the prmconfig(1) manpage.)
Compatibility with WLM
You can have distinct PRM and WLM configurations in use at the same time. For example, the
WLM configuration could be managing only the migration of CPU resources across virtual
partitions or nPartitions. For more information, see the WLM Release Notes.
When upgrading WLM, be careful of the order of upgrades, as explained in “Upgrading or
installing PRM before upgrading WLM from C.03.00 or earlier can cause WLM to fail swverify
checks” on page 24.