I did pre allocate a empty dataset on 9 volume but it failed after 6th volume
On Sun, 21 Dec 2025, 00:02 Radoslaw Skorupka, < [email protected]> wrote: > Yes, of course. The limit is 59 for both: SMS and non-SMS datasets. > However... do you have those volumes? > First try to use IEFBR14 and allocate empty dataset on target volumes. > Then you can use it for copy operation. > > -- > Radoslaw Skorupka > Lodz, Poland > > > > W dniu 20.12.2025 o 19:48, Peter pisze: > > 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 > > ---------------------------------------------------------------------- > 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
