Logical and physical reconfiguration

Logical reconfiguration allows or prevents use of a resource by the operating system. Physical reconfiguration allows or prevents use of a resource by the hardware. An operator can enter a CONFIG command on the console with master authority to logically and physically reconfigure the following hardware units, if applicable for the particular processor complex:

CPUs
Central storage elements
Central storage increments
Channel paths
I/O devices

Also, when an operator issues a CONFIG CPU command to reconfigure a processor, the system logically reconfigures any Integrated Cryptographic Feature (ICRF) attached to the processor.

Note: Physical reconfiguration may not be supported for all hardware units by all processor models. (See Functional Characteristics).