ACS routines can be used to determine the SMS classes for MVS data sets and z/OS® UNIX files created by z/OS Network File System. When data sets and files are created by z/OS Network File System, any attributes related to SMS classes not specified by remote client user are defaulted using the ACS routines for the data set. If the remote user does not specify a storage class and if the ACS routines decide that the data set should not be SMS-managed, Distributed FileManager/MVS ends and returns an error to the remote workstation. Therefore, it is important that on the MVS target system, you consider the potential data set creation requests of remote users when constructing the ACS routines.

When data sets are created by Distributed FileManager/MVS, any attributes not specified by the source requester are defaulted using the attributes specified in the data and management classes selected by the ACS routines for the data set. If the system requires attributes that neither the remote user nor the data class specified, the creation process fails.

See Determining Distributed FileManager/MVS data set creation requests for information on using ACS routines to determine the SMS classes for data sets created by Distributed FileManager/MVS.