Storage critical for address spaces

You can assign storage protection to all types of address spaces using classification rules for subsystem types ASCH, JES, OMVS, STC, and TSO. By specifying YES in the Storage Critical field for a classification rule, you assign storage protection to all address spaces that match that classification rule. An address space must be in a service class that meets two requirements, however, before it can be storage-protected:

• The service class must have a single period.
• The service class must have either a velocity goal, or a response time goal of over 20 seconds.