> >I just did a fresh install of zVM 5.3 using a MOD9 for the RES volume. > >The RES still has ~1500 cylinders free. Is it possible (or advisable) > >to format a few hundred of those cylinders as spool space and move all > >of the NSS/DCSS segments on to the RES? The zVM system does not have > >access to any tape drives so I cannot use SPXTAPE.
Possible, but not a good idea -- it's taken years to convince IBM to get spool/page/etc OFF the RES volume; don't mess it up now. Leads to unexpected FORCE/COLD starts when you change RES vols with upgrades. Unless you have a desperate shortage of disk, it's a good idea to never have a release-dependent volume contain spool space in the CPOWN list. If you're in a 2nd level machine, better to add a few large minidisks on a different volume to the virtual machine definition, format/allocate them with DSF, and let the 2nd level CP treat them as separate packs. No chance of accidentally clobbering 1st level spool that way. PS - Wouldn't it be nice if SPXTAPE had a option to direct it's output to the input of a PIPE so we could redirect the output to where we needed it to go (so we wouldn't require a tape drive)? *sigh* Someday...
