What I am facing a problem is : When I tried to backup compressed dataset that have compression set to be on in its data class, the backup speed will slow down dramatically. For example, when I backup z/os 1.13 sysres volume, I got speed of about 40MB/s, however, when backup data that have its data class with compression set to be on, the speed dropped to 20MB/s, the backup program is ADRDSSU.
In RMM, I can see the tape block size is 262144 bytes, however from DAT, I can't see 262144, which is very strange.That's the reason I am asking this question again. I am trying to copy the compressed data to be an uncompressed one, however, I failed to do that, can anyone give me suggstion on how to uncompress a dataset and copy it to a new loacation, so that I can backup the uncompressed data? Regards Victorh ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
