Our VM requirements are not huge, so we flashcopy most of our VM volumes at night to back up volumes with different labels.
These copies are also dumped to tape for a second opinion for DR. Our third System Config minidisk (CF3), with a different system id, points to these alternate volsers for cpowned volsers and warm and checkpoint areas. Our directory has alternate minidisks FCF1, FCF2, FCF3, F190, F2CC, F191, and F123 defined to identical extents as the originals using the keyword &SYSRES instead of the actual system res volser for volume labels. These will work no matter what the sysres label is. We could also hard code the actual alternate volume name instead for a bit less flexibility. Once the flashcopies are made, the duplicate system is IPL'able both second level and first level by choosing the third extent for cpload module and system configs. Once the system is up first or second leved, we log on to maint, define all the Fxxx addresses back to 0xxx, IPL CMS and update the directory and any other files to support the new DR or second level environment. For the most part, this just means doing global changes in the directory for the volume labels. Bob -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of David Boyes Sent: Thursday, September 03, 2009 9:09 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Download Vm Tape > Yes, we have an emergency 1-pack 3390-3 IPLable z/VM sysres DASD ... > but > how many newbies do? No IBM doc that I recall describes creating a 1- > pack emergency IPL disk, nor the importance of creating it immediately > after fully completing the first z/VM installation for the first time > (when one is most likely to make an inexperienced choice, taking down > that only z/VM system. Seems like a problem worth fixing, IMHO. Creating an emergency system isn't rocket science. It can go on the list of things that I'll get around to someday. I'm a little burned out on saving the world for no return at the moment. -- db This electronic transmission and any documents accompanying this electronic transmission contain confidential information belonging to the sender. This information may be legally privileged. The information is intended only for the use of the individual or entity named above. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or the taking of any action in reliance on or regarding the contents of this electronically transmitted information is strictly prohibited.
