For system-managed rebuild, the system uses the values from the CFRM active policy with the following exceptions:

• The system does not automatically initiate system-managed rebuild based on REBUILDPERCENT calculations. The specification of REBUILDPERCENT in a CFRM policy structure description applies to the percentage of connections that lost connectivity to the structure. System-managed rebuild is not supported for lost connectivity.
• If there is a pending CFRM policy change that modifies the structure SIZE or INITSIZE, and all connectors specified IXLCONN ALLOWALTER=YES, the system will allocate the new structure using the sizes from the pending policy, subject to the requirement that the resulting size be large enough to contain the data to be copied from the old structure. In some cases, the resultant structure size may be larger than the maximum structure SIZE specified in the CFRM policy.
• If there is a pending CFRM policy change that modifies the structure SIZE or INITSIZE, and not all connectors specified IXLCONN ALLOWALTER=YES, the policy changes will remain pending after the system-managed rebuild.

For system-managed duplexing rebuild, the system's use of the CFRM policy values is as follows:

• The DUPLEX(ENABLED) or DUPLEX(ALLOWED) specification determines whether the installation intends a structure to be eligible for duplexing.
• A change in the CFRM policy to DUPLEX(DISABLED) causes system-managed duplexing rebuild to stop.
• System-managed duplexing rebuild cannot be started when CFRM policy changes are pending for the structure.