Best Practices for Deploying HP-UX Secure Resource Partitions (SRP) for SAP Whitepaper

SRP short comparison

SRP and vPars

These two technologies are complementary. vPar is used when more than one OS image is needed.

SRP can be used on top of vPar.

Examples where SRP fits better than vPars (if only one of the technologies will be used):

 Use SRP for smaller systems or systems not supported by vPars

 Use SRP when resource utilization is a priority. While both vPars and SRP have low performance

overhead, SRP shares the resources more dynamically; if a workload needs more resources, then

they can be acquired more quickly and efficiently from another SRP compartment.

 Use SRP when efficient management of sub-core workloads is desired

 Use SRP to create or delete an SRP compartment very quickly

 Use SRP to save on additional license or support costs because they are included with

HP-UX

Examples where vPars fits better than SRP (if only one is used):

 Use vPars when strong out-of-the-box isolation is required

 Use vPars when large workload and/or dedicated I/O resources are required

 Use vPars when independent OS environments are required

 Use vPars to handle almost all applications immediately as certain adaptations or modifications of

the application might be required when using SRP

SRP and HP VM

While several SRPs could be deployed within an HP VM, typically either one or the other (SRP or HP

VM) would be chosen.

Examples where SRP fits better than HP VM:

 Use SRP for very low performance overhead

 Use SRP for more granular resource sharing, including OS table space

 Use SRP to manage sub-core workloads more efficiently

 Use SRP to create or delete an SRP compartment very quickly

 Use SRP to save on additional license or support costs because they are included with HP-UX

 Use SRP for ease of use in implementation with existing data center management practices because

additional management for the host OS and new data center practices are needed with HP VM

Examples where VM fits better than SRP:

 Use VM when stronger out-of-the-box isolation is desired

 Use VM when independent OS environments are required

 Use VM when a fully virtualized environment is required

 Use VM to run almost all applications immediately as modifications may be required in applications

running in SRP