Advanced Power Virtualization; I/O Sub-System Configuration Rules - IBM p5 590 System Handbook

that require an absolute minimum amount of memory for server firmware,
regardless of the previously mentioned considerations.
When selecting the maximum memory values for each partition, consider the
following:
Maximum values affect the HPT size for each partition
The logical memory map size for each partition
Note: Hardware Page Table is created based on the maximum values defined
on partition profile.
The LPAR Validation Tool is useful for determining memory requirements.

5.2.5 Advanced POWER Virtualization

The Advanced POWER Virtualization feature is standard in the p5-590 and
p5-595 servers. Advanced POWER Virtualization enables creation of
sub-processor (micro-partitions) that are in units of less than one full processor
and enables the physical system I/O to be virtually allocated across partitions.
The following configuration rules are specific to Advanced POWER Virtualization.
One system processor can support up to ten logical partitions
Using the Advanced POWER Virtualization feature, the p5-590 and p5-595
can be divided into as many as 254 LPARs. System resources can be
dedicated to each LPAR
The Advanced POWER Virtualization feature is standard on the p5-595 and
p5-590.
Advanced POWER Virtualization feature requires AIX 5L Version 5.3, SUSE
LINUX Enterprise Server 9 for POWER, or Red Hat Enterprise Linux AS 3
(update 4).

5.2.6 I/O sub-system configuration rules

Chapter 2, "Hardware architecture" on page 17 provides an architectural
overview of the p5-590 and p5-595 I/O subsystem. However, there are some
configuration rules specific to the I/O sub-system.
Use the following guidelines when attaching I/O drawers to a p5-590 or p5-595
central electronics complex (CEC):
Each half of the I/O drawer is powered separately
A maximum of eight I/O drawers can be connected to a p5-590 server
IBM Eserver p5 590 and 595 System Handbook
126