Creating and managing zFS file systems using compatibility mode aggregates

A zFS file system is created in a zFS aggregate (which is a VSAM linear data set). In a compatibility mode aggregate, the aggregate and the file system are created at the same time. For simplicity, we refer to a file system in a compatibility mode aggregate as a compatibility mode file system, or just as a file system. A compatibility mode file system is created by using the ioeagfmt utility, which is described in ioeagfmt.