Hello list, Does anybody know if/how it is possible to force SMS to allocate extents (the primary allocation then each secondary allocation) on different volumes (even if there is space enough on the first volume to put several extents there) ?
This would be for an application that writes the file sequentially (for performance) but then will read it direct access, using FEOV and POINT (with as many DCB's as there are different volumes). You guessed it, the application uses BSAM READ/WRITE with (respectively) POINT/NOTE with TTR. The multi-volume data set is one way to somewhat allow more space than TTR addressing allows (65,535 tracks on any volume) and for this purpose, it is best to have (ideally) the largest possible allocation, but no more, on each volume. The same would be true if using TTTR (although with a bigger addressable space per volume) Any hints are welcome. Thanks in advance. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
