VOLUME has a default count of 5. Specify 6-255 or a STORCLAS with a higher VOLUME count.
https://www.ibm.com/docs/en/zos/3.1.0?topic=vp-subparameter-definition https://www.ibm.com/docs/en/zos/3.1.0?topic=statement-unit-parameter On Sat, Dec 20, 2025 at 12:48 PM Peter <[email protected]> wrote: > > Hello > > A general question > > A non-sms dataset cannot span over volume count of more than 6 ? > > Cause I was able to allocate using ISPF 3.2 dataset on 11 mod27 but the job > failed with the below error spanning not more than 6 volumes. > > I used IDCAMS repro to copy > > IEC032I E37-08 , IFG0554P. > > > > > > On Sat, 20 Dec 2025, 20:24 Radoslaw Skorupka, < > [email protected]> wrote: > > > W dniu 20.12.2025 o 01:08, Michael Watkins pisze: > > > From memory: No z/OS dataset can span more than 59 volumes. 16 extents > > can reside on each volume unless the data set is SMS-managed and the > > DSNTYPE is defined as 'EXTENDED', in which case up to 123 extents can > > reside on each volume. However, unless Extent Constraint Removal is > > specified as 'Y' in the DATACLAS, the total number of extents spanning all > > volumes is 255. > > > > Not exactly. > > Datasets are limited to 16 or 123 extents per volume. > > Some datasets can be multi-volume, other datasets are single-volume > > only. Maximum is 59 volumes (on DASD). > > Some datasets are limited to 64k TRK per volume, other are not limited. > > The limits depends on dataset organisation and type. Examples: > > basic PS - 16 ext, 59 vol, 64k TRK > > large PS - 16 ext, 59 vol, 16M TRK > > extended format PS - 123 ext, 59 vol, no known limit for size. > > PDSE - 123 ext, 1 vol, no practical limit for size. > > VSAM - 123 ext, 59 vol, 4GB limit size (with exception for ZFS) > > ext-fmt & ext-addr VSAM - 123 ext, 59 vol, 4G CI size (up to 128 TB), > > other interesting features. > > > > (the above is not full list) > > > > SMS is pre-req for extended format, however as we can see it is not > > pre-req for 123 extents. > > Extent constraint removal is for VSAM only and for VSAM-specific limit > > (255 ext per dataset or rather component). > > > > > > -- > > Radoslaw Skorupka > > Lodz, Poland > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO IBM-MAIN > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
