I too echo your comments. To match your current production site, you need to build a duplicate system with duplicate data. A system that in a moment's notice, can take over and continue running production with minimum impact to your users.
After doing D/R for the last 13 years, I use the floor system to do my restoring, which after that is done, I ipl my home system. I try to have very little address changes, keeping as close as to home configuration as I can. Never even tried to run my home system second level on the DR floor system. Again trying to stay as close to what I have at home with regards to performance and capacity. Dennie -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] Behalf Of Thomas Kern Sent: Wednesday, March 12, 2008 7:35 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Disaster Recovery Scenarios My take on the DR scenarios is that unless you are building your own recovery site to match your production site, you can never guarantee the device addressing. So, you need to build address configuration changes into your DR Plan. You may not need to change some addresses from exercise to exercise, but on our last test, we had to change addresses within seven days of the exercise. Running your production z/OS or Linux under the vendor's floor z/VM system means you need to customize their directory, where running under your own z/VM means you can predefine some of those entries. Our z/OS systems run in their own LPARs at home, but in predefined virtual machines at DR. This way the z/OS people don't need to do IO(whatever) changes. My linuxes only need network definition changes which I will be prestaging before our next exercise. After 12+ years of DR heartburn, my feeling is it is easier to adjust MY z/VM system than to adjust the DR vendor's floor system. /Thomas Kern /U.S. Department of Energy /301-903-2211 /301-905-6427 This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this e-mail and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email.
