Appendix E. Verifying Capacity Upgrade On Demand Processors - IBM RS/6000 Enterprise Server M80 Service Manual

Appendix E. Verifying Capacity Upgrade on Demand
Processors
Capacity Upgrade on Demand data is stored in system hardware. If a system failure occurs where certain
hardware must be replaced, the Capacity Upgrade on Demand data may be lost. Use the following
procedures to ensure that the Capacity Upgrade on Demand data is restored (if necessary) after a service
action.
Determining Current Configuration
Before performing any other actions, use this procedure to determine the system configuration:
1. Log in to the system as root user or as a user with system group privileges.
2. Type the following at the command line:
chcod
3. The configured Capacity Upgrade on Demand features are displayed. Make a note of the current
configuration.
Recovery Procedures
Perform any required service actions to repair the system. After the service action is complete, use the
following procedure to check the Capacity Upgrade on Demand information and if necessary, return the
system to its original configuration.
1. Log in to the system as root user or as a user with system group privileges.
2. Type the following at the command line:
chcod
3. The configured Capacity Upgrade on Demand features are displayed. Compare the current
configuration with the configuration you recorded earlier.
If the system configurations do not match, use the procedures beginning with "Installing a System with
Capacity Upgrade on Demand" on page 353 to reinstall the Capacity Upgrade on Demand feature and
reconfigure the hardware, as appropriate.
Capacity Upgrade on Demand Diagnostics
Capacity Upgrade on Demand monitors its resources. Notification of the number of enabled devices is
sent to the CUoD project office monthly and whenever the number of resources change.
Unauthorized devices cannot be tested by AIX diagnostics, nor do they appear when running the lscfg
command on the NEW RESOURCE menu, or any AIX diagnostic task. For example, a system may have
eight processors originally installed, but only six of the eight have been authorized for use. Diagnostics will
only show the six authorized processors in the diagnostic test list or NEW RESOURCE list. The two
unused processors cannot be tested by standalone and online diagnostics, and will not display in the
diagnostic test list. However, they are tested by the power-on self-test (POST), and if a processor has
failed, the failure is:
v Logged in the POST error log
v Logged in the AIX error log
v Reported at boot time by automatic error log analysis
v Reported if the sysplanar0 diagnostics are run
System Management Services and service processor menus are not affected by Capacity Upgrade on
Demand and all processors are tested at boot time. If one processor failed at IPL, Capacity Upgrade on
Demand still enables the number of authorized processors, having the remaining good processors marked
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