Back virtual storage with sufficient real and auxiliary storage
Description
As you exploit additional virtual storage by defining additional address spaces or by exploiting memory objects, ensure that you have defined sufficient real and auxiliary storage.
Table 1 provides more details about this migration action. Use this information to plan your changes to the system.
Element or feature: | Multiple. |
---|---|
When change was introduced: | General migration action not tied to a specific release. |
Applies to migration from: | z/OS V2R1 and z/OS V1R13. |
Timing: | Before the first IPL of z/OS V2R2. |
Is the migration action required? | Yes. |
Target system hardware requirements: | None. |
Target system software requirements: | None. |
Other system (coexistence or fallback) requirements: | None. |
Restrictions: | None. |
System impacts: | None. |
Related IBM® Health Checker for z/OS® check: | None. |
Steps to take
Using an RMF™ report, determine whether additional real
or auxiliary storage is needed by checking the following real storage
concentration indicators:
- UIC and average available frames
- Demand page rates
- Percentage of auxiliary slots in use
Reference information
For more information
about memory objects, see the following references:
- z/OS MVS Programming: Extended Addressability Guide.
- Washington Systems Center flash 10165 at http://www.ibm.com/support/techdocs. Search for "flash10165".