IBM z13s, Technical Manual

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IBM z13s Technical Guide
򐂰 Confirmation mode: In this mode, CPM processes capacity-provisioning policies and
interrogates the installed temporary offering records. Every action that is proposed by the
CPM needs to be confirmed by the operator.
򐂰 Autonomic mode: This mode is similar to the confirmation mode, but no operator
confirmation is required.
A number of reports are available in all modes, containing information about the workload,
provisioning status, and the rationale for provisioning recommendations. User interfaces are
through the z/OS console and the CPCC application.
The provisioning policy defines the circumstances under which additional capacity can be
provisioned (when, which, and how). The criteria has three elements:
򐂰 A time condition is when provisioning is enabled:
– Start time indicates when provisioning can begin.
– Deadline indicates that the provisioning of the additional capacity is no longer enabled.
– End time indicates when the deactivation of the additional capacity must begin.
򐂰
A workload condition is a description of which workload qualifies for provisioning. The
parameters include this information:
– The z/OS systems that might run the eligible work.
– The importance filter indicates eligible service class periods, which are identified by
Workload Manager (WLM) importance.
– Performance index (PI) criteria:
• Activation threshold. The PI of the service class periods must exceed the activation
threshold for a specified duration before the work is considered to be suffering.
• Deactivation threshold. The PI of the service class periods must fall below the
deactivation threshold for a specified duration before the work is considered to no
longer be suffering.
– Included service classes are eligible service class periods.
– Excluded service classes are service class periods that must not be considered.
򐂰 Provisioning scope is how much extra capacity can be activated, expressed in MSUs.
CPD can contain multiple CPCs. There can be only one additional capacity specification
per CPC, when this is expressed in MSUs.
The maximum provisioning scope is the maximum additional capacity that can be
activated for all of the rules in the CPD.
The provisioning rule
The provisioning rule is
in the specified time interval, if the specified workload is behind its
objective, up to the defined additional capacity can be activated.
The rules and conditions are
named and stored in the CPP. For more information about z/OS Capacity Provisioning
functions, see
z/OS MVS Capacity Provisioning User’s Guide, SA33-8299.
Planning considerations for using automatic provisioning
Although only one On/Off CoD offering can be active at any one time, several On/Off CoD
offerings can be present on the zBC12. Changing from one to another requires that the active
If no workload condition is specified: The full capacity that is described in the policy
is activated and deactivated at the start and end times that are specified in the policy.