Logical Partition Standards

LPAR, short for logical partitioning, is a mechanism of taking a computer's total resources - processors, memory and storage -- and splitting them into smaller units that each can be run with its own instance of the operating system and applications. Each partition can communicate with the other partitions as if the other partition is in a separate machine.

In CGE's environment, the ability to obtain outages for the purpose of maintenance and upgrades will be difficult. Furthermore, systems supporting multiple business functions will be even more difficult to obtain outage windows. Therefore it is desirable to create LPAR's to support each business function, thus reducing the impact of an outage upon the overall environment. So rather than creating large LPAR's supporting multiple business functions for a client, it is preferable to create multiple LPARs to support each business function.

When creating an LPAR, the following standards will be applied:

• The LPAR name and profile name will be the same as the short machine name assigned to the LPAR.
• Minimum Memory: 512 MB
• Desired Memory: 512 MB
• Maximum Memory: All available memory

For LPARs that will require 3 physical processors or less during normal operations:

• Processor Mode: shared
• Minimum processing units: 0.20
• Desired processing units: 0.20
• Maximum processing units: All available CPUs
• Minimum Virtual Processors: 2
• Desired Virtual Processors: 2
• Maximum Virtual Processors: 30

For LPARs that will require more than 3 physical processors during normal operation:

• Processor Mode: shared
• Minimum processing units: 1.00
• Desired processing units: 1.00
• Maximum processing units: All available CPUs
• Minimum Virtual Processors: 2
• Desired Virtual Processors: 2
• Maximum Virtual Processors: 64

Physical I/O will be assigned as required by the business functions supported by by each LPAR, Virtual I/O will be assigned as required by each LPAR and in accordance with CGE's VIO standards. Connection monitoring will be enabled for each LPAR and no LPARs will be started automatically when the frame is powered on.