
336 IBM BladeCenter JS23 and JS43 Implementation Guide
8.1 Supported Red Hat operating systems
Red Hat Enterprise Linux for POWER Version 4.6 or later and Red Hat
Enterprise Linux for POWER Version 5.1 or later support installation on a JS23.
This chapter specifically covers installing Red Hat Enterprise Linux for POWER
Version 5.3 with a DVD and over the network on a PowerVM logical partition
(LPAR).
8.1.1 Considerations and prerequisites
There are some system configuration considerations and prerequisites prior to
installing Red Hat Enterprise Linux 5.3 on a JS23 partition. They are covered
here.
PowerVM LPAR considerations
By the characteristics of the virtualization features in the System p JS23
BladeCenter, the operating system and applications do not know they are
running in a micro-partitioned or virtuaized I/O environment. This allows
applications to run unmodified in a partition that takes advantage of virtualization
features.
Because the virtual partition handles the transition of the virtual adapter’s I/O
operation to the physical adapter, it is important to guarantee that the partition is
properly sized to handle the I/O requirements. A good source for processor and
memory requirements for PowerVM partitions based on I/O requirements is
found at:
http://www14.software.ibm.com/webapp/set2/sas/f/vios/documentation/perf
.html
Additional information on virtualization and LPAR setup is available in Chapter 4,
“System planning and configuration using VIOS with IVM” on page 71.
Red Hat Enterprise Linux 5.3 installation considerations
The minimum RAM required to install Red Hat Enterprise Linux 5.3 is 1 GB, while
the recommended RAM is 2 GB.
Note: Make sure you have 1G of RAM or more allocated to your LPAR.
Systems with less that 1 GB of RAM may experience installation process
hangs or other unexpected failures.
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