P3 Business Continuity Methodology
The documentation referenced here describes the policies, guidelines,
standards and procedures for insuring business continuity for the
business function supported using IBM's Power 5 architecture. This
architecture supports the ability to provide capacity on-demand and
virtual I/O. The ability to micro-partition using pieces of a processor
and dynamically allocate and deallocate memory is supported in this
environment as well.
Business Continuity Foundation:
The Power 5 architecture provides the ability to define LPAR's and
Virtual LPAR's. The difference between an LPAR and a Virtual LPAR is
the implementation of the virtualization features. The Power 5
architecture allows the sytem administrator to configure logical
partitions with dedicated resources such as processors, memory, and I/O
adapters. The system administrator may also configure logical
partitions utilizing shared processors, memory, and virtualized I/O
adapters. The virtual I/O adapters are configured and made available to
the LPAR's via the VIO server. The VIO server provides the ability to
reduce the number of adapters required to support multiple LPAR's by
virtualizing the hardware and allowing multiple LPAR's to share the same
hardware I/O adapters.
