HP-UX 11i Release Notes (December 2000)

Overview of Release Notes for HP-UX 11i
Overview of the HP-UX 11i Release
Chapter 1 25
Overview of the HP-UX 11i Release
HP-UX 11i provides new hardware enablement, additional software
functionality, and various HP-UX applications bundled into an
Operating Environment. It is the recommended next-level enterprise
release for all HP-UX systems currently running HP-UX 10.x or 11.0.
Installing or updating to HP-UX 11i will require at least a 4GB root disk
and a minimum of 64MB of memory. See the HP-UX 11i Installation and
Update Guide, part no. B2355-90703, for complete information.
Performance Considerations
The performance of HP 9000 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. For more information on Operating Environments, see
the next section.
The HP-UX 11i Operating Environments provide numerous benefits.
These include 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, the Operating Environments 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.