My preference is to apply maintenance to a second level system, and test it there before applying the maintenance to production.
An easy way to do it your way would be DDR copy your system residence volumes to spare disks with different labels from production. Record the volume addresses!!! Have a standalone ICKDSF tape available, or make sure your parm disks have standalone ICKDSF. Apply maintenance. If you need to go back, IPL ICKDSF, swap volume labels, IPL, and you are back to where you began. Peter -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Le Grande Valerie Sent: June 24, 2009 15:42 To: IBMVM@LISTSERV.UARK.EDU Subject: Maintenance "Hot Standby" 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 valerie.legra...@sentry.com The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review retransmission dissemination or other use of or taking any action in reliance upon this information by persons or entities other than the intended recipient or delegate is strictly prohibited. If you received this in error please contact the sender and delete the material from any computer. The integrity and security of this message cannot be guaranteed on the Internet. The sender accepts no liability for the content of this e-mail or for the consequences of any actions taken on the basis of information provided. The recipient should check this e-mail and any attachments for the presence of viruses. The sender accepts no liability for any damage caused by any virus transmitted by this e-mail. This disclaimer is property of the TTC and must not be altered or circumvented in any manner.
