HP-UX 11i June 2002 Release Notes

Overview of the HP-UX 11i Release
What’s HP-UX 11i?
Chapter 3
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What’s HP-UX 11i?
HP-UX 11i provides new hardware enablement, additional software functionality, and
various HP-UX applications bundled into Operating Environments. HP-UX 11i is the
recommended next-level enterprise release for all HP-UX systems currently running
HP-UX 10.x or 11.0.
See the HP-UX 11i Installation and Update Guide for information on disk and memory
requirements.
Performance Considerations
The performance of HP servers and applications with the HP-UX 11i Operating
Environments is as good or better as compared to HP-UX 11.0 installed in the same
configuration. It must be kept in mind, however, that in the vast majority of cases,
HP-UX is likely to be installed as part of one of the predefined HP-UX 11i Operating
Environments.
The HP-UX 11i Operating Environments provide numerous benefits, including lower
cost as well as simplification of product ordering, installation, integration, and support.
While the HP-UX 11i Operating Environments provide these desirable benefits, they all
involve more software components and daemons than a base HP-UX 11.0 or HP-UX 11i
operating system. Because of this, an Operating Environment may have somewhat
greater system overhead compared to a base operating system installation. This increase
in system overhead, while modest, can nevertheless make it erroneously appear that
system and application performance are degraded with HP-UX 11i as compared to
HP-UX 11.0. In fact, performance with HP-UX 11i is generally better than HP-UX 11.0
when the software configurations are the same.
While not recommended, one of the options for installing HP-UX 11i is as a base
operating system only, without an Operating Environment. Installing HP-UX 11i as a
base operating system will give the greatest performance and the lowest system
overhead but eliminates the advantages provided by the HP-UX 11i Operating
Environments.