Where you can do duplicate volumes, which was really necessary in the old days, before RAID, and head crashes...
But with maintenance, you already have it. i.e. 190 is where CMS is. 490 is you apply maintenance. Swap the disks to put in or swap out, maintenance. (you will still need to resave the CMS segment) CF1 is your current CP system. CF2 is your backup. CF3 don't touch. Copy CF1 to CF2 and apply CP maintenance. IPL normally with CF1. IPL with CF2 to backout. This is defined on the SAIPL loader screen. If you want to, you can still have a backout volume. One suggestion is to copy 540RES to 540OLD Apply maintenance to 540RES. If you need to backout, IPL the standalone utilities and rename 540RES to 540NEW and 540OLD to 540RES and IPL the new CUA. Of course, you could do a standalone DDR restore (or what ever is you favorite backup product). When I get in trouble, I can IPL one of my old VM systems 420RES, 510RES, etc. Good when you flashcopy a CP volume and don't rename the copy. IPL and sometimes you get something really old and cold starting the spooler would loose too much <G>. Tom Duerbusch THD Consulting >>> Le Grande Valerie <[email protected]> 6/24/2009 2:42 PM >>> I am looking for some input: How do you do maintenance and keep a "hot standby" volume (and old 540RES and newly maintained 540RES)? We have to bring maintenance in "off hours" and like to have a volume operators can switch back to should there be problems. If anyone can share how-to, please contact me off list (or copy me on the list entry - I can't get to the list from my current work location). Valerie Le Grande [email protected]
