z/OS DFSMShsm Implementation and Customization Guide
Previous topic | Next topic | Contents | Contact z/OS | Library | PDF


Resource serialization in a multiple DFSMShsm host environment

z/OS DFSMShsm Implementation and Customization Guide
SC23-6869-01

Data set integrity is of major importance. In both a single DFSMShsm host environment and a multiple DFSMShsm host environment, serialization of resources ensures their integrity. DFSMShsm serializes data sets with either of two methods:
Volume reserve
DFSMShsm issues reserves against the source volume to protect data sets during volume processing. The protection is requested by the z/OS RESERVE macro.
Global enqueue
User data sets can be protected with the z/OS ENQ and z/OS DEQ macros.

For information on resource serialization in an HSMplex, see Resource serialization in an HSMplex environment.

Parent topic: DFSMShsm in a multiple-image environment

Go to the previous page Go to the next page

Notices | Terms of use | Support | Contact z/OS | zFavorites



Copyright IBM Corporation 1990, 2014