Long-term storage protection

When you assign long-term storage protection to critical work, WLM restricts storage donations to other work. This option can be useful for work that needs to retain storage during long periods of inactivity because it cannot afford paging delays when it becomes active again. With long-term storage protection assigned, this work will lose storage only to other work of equal or greater importance that needs the storage to meet performance goals.

You assign long-term storage protection with the “Storage Critical” option, found by scrolling right on the Modify Rules for the Subsystem Type panel:

Figure 1. Specifying the Storage Critical Option

                Modify Rules for the Subsystem Type        Row 1 to 2 of Command
===> ____________________________________________ SCROLL ===> PAG

Subsystem Type . : CICS         Fold qualifier names?   Y  (Y or N)
Description  . . . CICS Transactions

Action codes:  A=After    C=Copy         M=Move     I=Insert rule
               B=Before   D=Delete row   R=Repeat   IS=Insert Sub-rule
                                                 <=== More
           -------Qualifier---------      Storage    Manage Region
 Action    Type       Name     Start      Critical   Using Goals Of
  ____  1  TN         COMBL*   ___        NO             N/A
  ____  2  UI         COMBLD   ___        NO             N/A
  ____  2  UI         COMFTP   ___        YES            N/A