ISPF extended statistics support for PDS or PDSE members

As of z/OS V2R1, the z/OS NFS Server supports processing extended ISPF statistics for PDS or PDSE members with more than 65535 lines (see z/OS ISPF User's Guide Vol I and z/OS ISPF User's Guide Vol II). The z/OS NFS Server always creates extended ISPF statistics when creating/writing a member.

Note:

Use of extended ISPF statistics requires more directory blocks than standard ISPF statistics for the same number of members in a PDS. So, if members of a PDS are being written, or created and in the process generates extended statistics, the directory may run out of directory blocks even though no new members are added. It is the customer's responsibility to ensure that the PDS is defined with adequate directory blocks.
When accessing a PDS or PDSE member which contains more than 65535 lines, but only has standard ISPF statistics, and the ISPF statistics do not have a value of 65535 for the number of lines in the member to indicate that the value is incorrect, the z/OS NFS Server CANNOT convert the ISPF statistics to extended statistics. This may lead to an incorrect filesize calculation.
Use the "TSO ISPCCONF" command to activate the display of extended ISPF statistics on ISPF panels. See z/OS ISPF User's Guide Vol I and z/OS ISPF User's Guide Vol II for details.