z/VSE 6.2: VSAM space considerations
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You may decide to upgrade to z/VSE 6.2 via an initial installation or Fast Service Upgrade (FSU), if you want to upgrade from z/VSE 6.1. If you are coming from z/VSE Version 5, you have to do an initial installation, because FSU from z/VSE Version 5 to z/VSE Version 6 is not supported.
The z/VSE 6.2 system layout (DOSRES, SYSWK1) changed. Please consider that you need more VSE/VSAM space for the PRD1 and PRD2 libraries:
Please see the z/VSE 6.2 Planning book for details. It can be downloaded from here.
Have a good weekend.