Bill, I wrote a blog post <https://colinpaice.blog/ibm-blog-april-2015/>on this many years ago. I think you want ADRDSSU with Fastreplication <https://www.ibm.com/docs/en/zos/2.1.0?topic=ecck-fastreplication>
*How it works.* The storage control unit has a list of all "tracks" used by a dataset. To copy a dataset by fast replication the hardware just copies this list - this takes seconds. As the original dataset is updated, the list of its "tracks" is updated. The copy's list stays constant. Over time the list of the original and copy diverge. Making the fastcopy does not use any disk space. As the original dataset is updated the number of "tracks" in use will increase. To make a DR backup - you have to copy it off the DISK subsystem onto another subsystem ( or tape, or FTP it). This can take a long time ( many minutes or hours) Colin On Fri, 17 Feb 2023 at 16:27, Bill Giannelli <billgianne...@gmail.com> wrote: > Can anyone provide an example on how to use flashcopy to copy, or backup, > an individual dataset? > thanks > Bill > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
