Appendix D. Using the chcod Command
Description
The chcod command manages the Capacity Upgrade on Demand feature, which allows configuration of
more ResourceType, in this instance processors, on the system than were initially configured. The
additional resources may be enabled if they are available, and if the system supports Capacity Upgrade on
Demand for the specified ResourceType. Only one ResourceType can be managed at a time. The change
in the number of ResourceType takes effect after the next system boot.
Capacity Upgrade on Demand management also includes displaying the current number of ResourceType
that have Capacity Upgrade on Demand support, monitoring the number of ResourceType on the system,
and notifying appropriately. Notification occurs when NbrResources changes and also on a periodic basis.
Notification (in the form of error logging) is sent through Electronic Service Agent to the service support
center. The CustomerInfo text is included in the error log.
The chcod command syntax is as follows:
chcod [-r ResourceType -n NbrResource] [-c CustomerInfo] [-h]
Flags
-c CustomerInfo
Specifies the text string to include in the error log. CustomerInfo cannot be more than 255
characters in length. Blank spaces cannot be included in the string. After CustomerInfo has been
specified, subsequent uses of the chcod command do not have to specify the -c flag, but you do
have the option of changing it. CustomerInfo can consist of alphanumeric characters and any of ″.″
(decimal point), ″,″ (comma), ″-″ (hyphen), ″(″ (open parenthesis), or ″)″ (closed parenthesis). This
flag is optional.
-h Displays the usage message. This flag is optional.
-n NbrResources
Specifies the number of ResourceType to be authorized on the system. The value
forNbrResources should be entered in increments of 2. The number that is entered represents the
total number of processors for the system. If you are adding the first additional processor board,
the number should be 6, 8, 10, or 12. Each time a processor board is added, the total number of
desired processors is entered. If the number is 0, Capacity on Demand will be disabled for the
specified ResourceType. This flag is optional. If -n is specified, then -r must also be specified.
-r ResourceType
Specifies the ResourceType (proc for processors) to be enabled and monitored on the system.
The system must support Capacity Upgrade on Demand for ResourceType. If -r is specified, then
-n must also be specified.
The default for the chcod command (with no flags) displays the current value of CustomerInfo, a reserved
field named MailAddr, the system’s model name and serial number, and the current values for any
ResourceType.
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