Before you can use DFSMStvs functions, you must have implemented a Parallel Sysplex® and VSAM record-level sharing (RLS). In the same way that it is difficult to estimate the resources needed by coupling facilities, it is difficult to estimate the additional processor use for DFSMStvs applications.

These applications will, however, cause a noticeable increase in processor use. If you have spare capacity at the time you expect to run these jobs, this might not be an issue.