The way we load things into cache is to use the BVIR logical-to-physical mapping report to build JCL streams to reference the logical tapes to bring them into the cache, with a single physical mount. Can't help you with removing from the cache, but would interested if you do find out! Thought i did find a LIBRARY command to remove things from cache at one point, but it didnt appear to do anything.
On 5 June 2014 22:45, Joe Ogle <[email protected]> wrote: > Hello all - > > Have a client with a two cluster TS7740 grid with TS3500 backstore. All > but 6TB of 600TB of tape resides in the backstore, and time in cache for a > given vtape is about a week. > > Client is migrating data centers - has purchased duplicate config for > their new location, and we're adding those to the existing grid to affect > the replication. > > Boxing up the physical cartridges and overnighting is not in play for > reasons I'm not privy to. We're having to engineer a way to do this via > copy consistency on the grid. > > Trying to figure out a largely hands-off way to get a vtape loaded to > cache from the backstore such that it will trigger a pull from the > destination cluster via copy consistency settings and then force it off > the cache when done. And of course, I have to throttle this in a way that > I don't fill the cache in a manner that an unacceptable number of > production mounts are pulled from the backstore. > > Bonus functionality would be to get this to load all vtapes stored on a > single 3592 so I'm not hanging/reading the same cartridge multiple times. > > I can't see a way to make this happen via LIBRARY commands, Sitting in > front of a browser clicking on the TS7740 MI's and doing this manually has > little appeal, but I'm out of ideas. Any suggestions would be most welcome > and appreciated. > > Joe Ogle > Senior Systems Consultant > Baer Consulting, Inc > > > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
