Wayne - thank you very much
Lionel B. Dyck <sdg>< Website: https://www.lbdsoftware.com "Worry more about your character than your reputation. Character is what you are, reputation merely what others think you are." - John Wooden -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Glenn Wilcock Sent: Thursday, May 28, 2020 4:26 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: DFSMShsm questions First, I'm impressed that your subject line has 'DFSMShsm' as opposed to DFHSM or any of the other names that it's gone by over the years. Background on the design for selecting the data set backup target tier, first created when physical tape was still dominant - for small data sets, you don't want the overhead of a tape mount for a one-off backup, and for large data sets you don't want them going to disk and eating up all of your space. So, we created a SETSYS called DSBACKUP where you could fine tune just which data set backups go to disk and which go to tape and the tasking level for each. With virtual tape, this is no longer quite an issue, but the parameters still persist. If you always want you individual backup copies to go to disk, you can set the parameters to do so. In the DFSMShsm Storage Administration manual SETSYS chapter, there is a section names 'SETSYS fast-path for DFSMShsm Functions'. In this section you will find a table with the parameters that affect tape processing. But, Chapter 10 of the DFSMShsm Implementation & Customization Guide is an exhaustive guide for establishing the DFSMShsm tape environment. Glenn Wilcock DFSMShsm Architect ---------------------------------------------------------------------- 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
