HP Integrity Superdome 2 8/16 HP Superdome 2 Partitioning Administrator Guide - Page 29

Planning nPartitions, Recommended HP Superdome 2 nPartition Configurations

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4 Planning nPartitions This chapter describes how you can plan nPartition configurations. Details include the nPartition configuration requirements and recommendations. This chapter discusses the following topics: • "Recommended HP Superdome 2 nPartition Configurations" • "HP Superdome 2 Partitioning Choices" • "Sample Procedure for Creating nPartitions" Recommended HP Superdome 2 nPartition Configurations Configuration Guidelines for HP Superdome 2 nPartitions Use these guidelines to help determine which blades to assign to the nPartitions you create on HP Superdome 2 servers. • Define nPartitions in order of size. Assign blades to the nPartition that has the largest CPU count first. Then select blades for the next largest nPartition, and so on, and finally choose blades for the nPartition with the fewest CPUs last. This provides more appropriate blade assignments for larger nPartitions (those with more CPUs). Any smaller nPartitions with fewer CPUs are more easily accommodated in the remaining, available blades. • For any nPartition requiring 4 or fewer blades, choose either all even numbered or all odd numbered slots. HP Superdome 2 Partitioning Choices An HP Superdome 2 complex may be partitioned into many different mixes of partitions. Any blade and any I/O bay can be assigned to any nPartition. The configurations recommended here allow the customer to partition their HP Superdome 2 system into the maximum number of recommended, useful, and allowed nPartitions. The Superdome 2 - 16s can have anywhere between 1 and 8 blades in the complex and supports nPartitions 1 to 8 blades in size. The Superdome 2 - 8s can have anywhere between 1 and 8 blades in the complex and supports nPartitions 1 to 4 blades in size. The enclosure's midplane has been routed such there is more bandwidth across odd slots and even slots vs. mixed. Therefore, a four blade partition will have better performance when all four of the blades are in odd (1, 3, 5, 7) or even (2, 4, 6, 8) slots rather than mixed (1, 2, 3, 4). This has been reflected in the partitioning recommendations below. These are the configurations as they will be shipped from the factory. Other configurations are legal and supported, but won't have had as extensive testing done on them, may not have the best performance, or may not allow as much flexibility for future upgrades. For instance, it is legal for a 2 blade partition to be populated in slots 1 and 2 vs. 1 and 3. Recommended HP Superdome 2 nPartition Configurations 29

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4 Planning nPartitions
This chapter describes how you can plan nPartition configurations. Details include the nPartition
configuration requirements and recommendations. This chapter discusses the following topics:
•
“Recommended HP Superdome 2 nPartition Configurations”
•
“HP Superdome 2 Partitioning Choices”
•
“Sample Procedure for Creating nPartitions”
Recommended HP Superdome 2 nPartition Configurations
Configuration Guidelines for HP Superdome 2 nPartitions
Use these guidelines to help determine
which blades to assign to the nPartitions you create on HP Superdome 2 servers.
•
Define nPartitions in order of size.
Assign blades to the nPartition that has the largest CPU count first. Then select blades for
the next largest nPartition, and so on, and finally choose blades for the nPartition with the
fewest CPUs last.
This provides more appropriate blade assignments for larger nPartitions (those with more
CPUs). Any smaller nPartitions with fewer CPUs are more easily accommodated in the
remaining, available blades.
•
For any nPartition requiring 4 or fewer blades, choose either all even numbered or all odd
numbered slots.
HP Superdome 2 Partitioning Choices
An HP Superdome 2 complex may be partitioned into many different mixes of partitions. Any
blade and any I/O bay can be assigned to any nPartition. The configurations recommended here
allow the customer to partition their HP Superdome 2 system into the maximum number of
recommended, useful, and allowed nPartitions. The Superdome 2 - 16s can have anywhere
between 1 and 8 blades in the complex and supports nPartitions 1 to 8 blades in size. The
Superdome 2 - 8s can have anywhere between 1 and 8 blades in the complex and supports
nPartitions 1 to 4 blades in size.
The enclosure's midplane has been routed such there is more bandwidth across odd slots and
even slots vs. mixed. Therefore, a four blade partition will have better performance when all four
of the blades are in odd (1, 3, 5, 7) or even (2, 4, 6, 8) slots rather than mixed (1, 2, 3, 4). This has
been reflected in the partitioning recommendations below.
These are the configurations as they will be shipped from the factory. Other configurations are
legal and supported, but won't have had as extensive testing done on them, may not have the
best performance, or may not allow as much flexibility for future upgrades. For instance, it is
legal for a 2 blade partition to be populated in slots 1 and 2 vs. 1 and 3.
Recommended HP Superdome 2 nPartition Configurations
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