> > Hello IBM-MAIN people, > We recently have installed a new IBM Tape Library (without a VTS) to replace a > very old STK Silo; so we are migrating our tape usage from 3490's to 3590's - about a > hundred-fold increase increase in capacity per cartridge (and will have many fewer > cartridges!)! This change in technology has forced us to change all of our tape jobs - in > some cases, like backups, it is very straight forward (take 40 odd jobs, create one job > that "stacks" all of backups onto a single tape); some jobs/processes are not so easy! > One of our difficult processes is the JES2 OFFLOAD. Every weekday night (at 18:30) > we start the offload of production output to tape (with PURGE). Before the new tape > library, this would take less than a full 3490 cartridge (and it still takes less than a full > 3590 cartridge - a very small fraction of a cartridge and a lot of waste). >From my > reading of the JES2 commands, it seems that JES2 OFFLOAD can not deal with file > sequence numbers (more than one file per tape). Currently, we keep the offload on > tape for 60 days. I would like to get some feedback from others on the list as to what > they do for JES2 OFFLOAD. Is anyone using the OFFS= parameters in commands, and > how (I would like to see command sequences). > > One of the questions I have is, can JES2 append to an existing OFFLOAD tape? I > would like to be able to mount the same tape for month (roughly 20 working days). I > know that as job numbers roll over 9999 to 1 I might get into the slim possiblity of > JOBNUM/JOBNAME conflicts on restoring the output. >
In my shop we use an External Writer to do this. We have a process that we can run against the tape to extract the jobs back off into SYSPRINT. Not sure if this is something you want to look at or not There is on the CBTTAPE.ORG File 575 to combine Offloaded files 358 SYSOUT Archive process (Eric Biefield) 790 Sysout Retrieval Services These might be worth looking at. Lizette ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
