IBM pSeries 670, Service Manual

Page: 24 / 1032

memory segments. Use the following table to help you keep track of the system’s page-table memory
usage:
Partition Memory Size
(256 MB increments)
Partition Page Table Size
(4 16-byte entries per 4 K
real page)
Partition Page Table
Alignment
Assigned Memory Segments
(256 MB)
1 GB 16 MB 16 MB 1
1 GB - 2 GB 32 MB 32 MB 1
2 GB - 3 GB 64 MB 64 MB 1
4 GB - 7 GB 128 MB 128 MB 1
8 GB - 15 GB 256 MB 256 MB 1
16 GB - 31 GB 512 MB 512 MB 2
32 GB - 63 GB 1 GB 1 GB 4
64 GB - 96 GB 2 GB 2 GB 8
In a full system partition, the operating system uses all of the installed memory; the system does not set
aside contiguous memory for its own use. Keep this in mind when you record the amount of memory used
when you are completing the planning worksheets in the
IBM Hardware Management Console for pSeries
Installation and Operations Guide , order number SA38-0590.
Partition Requirements
To activate a partition, you need a minimum of the following:
v 1 GB of available system memory
v
One available system processor
v
One available network adapter (for error reporting)
If you attempt to activate a partition and the resources that you specified are not available at that time,
activation fails. It is important to keep track of your system’s resources and your activation times to avoid
failures.
Service Focal Point
This chapter provides information about using the Service Focal Point application.
The Service Focal Point application is used to help the service representative diagnose and repair
problems on partitioned systems. Service representatives use the HMC as the starting point for all service
issues. The HMC groups various system management issues at one control point, allowing service
representatives to use the Service Focal Point application to determine an appropriate service strategy.
Traditional service strategies become more complicated in a partitioned environment. Each partition runs
on its own, unaware that other partitions exist on the same system. If one partition reports an error for a
shared resource, such as a managed system power supply, other active partitions report the same error.
The Service Focal Point application enables service representatives to avoid long lists of repetitive
call-home information by recognizing that these errors repeat, and by filtering them into one error code.
The following types of errors are reported to Service Focal Point:
v
Permanent hardware errors (detected by the managed system or operating system)
v LAN surveillance errors detected by Service Focal Point
v
Hardware boot failure errors
The following errors are not reported to Service Focal Point:
v
Software errors
4
Eserver
pSeries 670 Service Guide