HP Global Workload Manager 7.3 and 7.3 Update 1 User Guide

Undeploy Disable gWLM’s management of resources in a specified
SRD.
If an SRD is in managed mode, undeploying stops the
migration of system resources among workloads in the SRD.
If the SRD is in advisory mode, gWLM no longer provides
information on what requests would have been made.
The gWLM management model
gWLM enables utility computing across a data center by providing resource-sharing policies that
you centrally create and monitor. gWLM moves resources among the workloads in a shared
resource domain (SRD) as needed—based on the policies you specify.
gWLM allows you to manage resource allocations for several types of system divisions, as discussed
below. These divisions are referred to as compartments in gWLM.
• HP-UX Hardware Partitions (npar)
A hardware partition, also known as an nPartition or npar, is a physical partition of a server,
where each npar runs its own instance of the HP-UX operating system (which can include use
of HP Integrity virtual machines) or is divided into virtual partitions.
Using the HP Instant Capacity product, gWLM simulates the movement of CPU resources
among nPars by turning off an active core in one npar then turning on a deactivated core in
another npar in the same complex. Thus, the first npar has one less active core, while the
second npar has one additional active core. (gWLM maintains the number of active cores,
honoring the Instant Capacity usage rights. As a result, no additional costs are incurred.)
Combining gWLM A.04.00.07 or later and an appropriate version of the iCAP software,
gWLM's ability to manage nPars using iCAP is extended across multiple complexes that are
members of the same Global iCAP group.
• HP-UX Virtual Partitions (vPar)
A virtual partition is a software partition of a server or of a single nPartition, where each virtual
partition runs its own instance of the HP-UX operating system. A virtual partition cannot span
an nPartition boundary.
• Virtualization Services Platform (VSP)
Virtualization Services Platform is a management platform for creating and managing virtual
machines or virtual partitions. Provides both command-line interface and graphical user
interface for configuring and managing virtual machines or vPars.
gWLM supports the management of VSPs running HP-UX vPars and Integrity VM 6.2 or earlier
• HP Integrity Virtual Machines (hpvm)
,ion, with sub-core allocation granularity and shared I/O. These virtual machines can run a
variety of operating systems. gWLM can manage a virtual machine regardless of the operating
system running inside it.
• HP-UX Processor sets (psets)
A processor set is a collection of cores (formerly known as CPUs) grouped together for the
exclusive access by processes assigned to that processor set. Processor sets form partitions
within a single operating system image.
• HP-UX Fair Share Scheduler groups (fss groups)
A group of processes that has its CPU resource allocation managed by the Fair Share Scheduler
that is available with HP-UX. A benefit of fss groups is their granularity: You can allocate
fractions of CPU resources, rather than only whole cores, to the group of processes. These
groups form partitions within a single operating system image.
The gWLM management model 9