Managing the state of coupling facility structures, detecting by one or more systems coupled to the coupling facility, the suspended state of the duplexed command, detecting being independent of message exchange

摘要

A coupling facility is coupled to one or more other coupling facilities via one or more peer links. The coupling of the facilities enables various functions to be supported, including the duplexing of structures of the coupling facilities. Duplexing is performed on a structure basis, and thus, a coupling facility may include duplexed structures, as well as non-duplexed or simplexed structures.