Extended Address Volumes (EAV)

zDMF supports Extended Address Volumes (EAV), that is, volumes with more than 65520 cylinders. EAV is supported on z/OS® 1.10 and higher. On EAV, cylinder numbers less than or equal to 65520 are designated track-managed space and cylinder numbers greater than 65520 are designated cylinder-managed space or extended addressing space (EAS).

A data set is EAS eligible if it resides on EAV, is described by extended attribute DSCBs (format 8/9) and its extents may reside in extended addressing space.

These data sets are EAS eligible at the indicated z/OS release level:

• VSAM data set types with compatible CA sizes (1, 3, 5, 7, 9, 15 tracks) - z/OS 1.10
• Sequential (Extended Format) - z/OS 1.11
• Sequential (Basic and Large Format) - z/OS 1.12
• Direct (BDAM) - z/OS 1.12
• Partitioned (PDS and PDSE) - z/OS 1.12
• Catalog (BCS and VVDS) - z/OS 1.12
  Note: zDMF does not support migrating BCS or VVDS data sets.