Jim, The best answer I can give is, "It depends." We have two test z/VM systems running under our 1st level z/VM which is running in an LPAR and the response on them is as good as on the 1st level system. However, these are lightly loaded and neither 1st nor 2nd level have paging constraints.
You really need to examine your existing workloads to make the determination. With VSE/ESA running under z/VM under z/VM in LPAR mode you might be asking for performance problems. Jim -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Hughes, Jim - OIT Sent: Tuesday, March 28, 2006 12:54 PM To: IBMVM@LISTSERV.UARK.EDU Subject: ZVM under ZVM and data center consolidation We are consolidating two data centers. Both data centers run ZVM and VSE/ESA. I happen to be at the "home" data center with the hardware and the host zvm system. The data center being relocated is keeping its network infrastructure, its operator staff, a few tape drives, and its users where they sit today. The data center being located wants its own ZVM under ZVM system. Technically I don't agree. On the other hand, maybe it' not a technical issue. If it's not a technical issue, what business reasons exist to support running a ZVM under ZVM environment? I'm sure there are others who have faced this dilemma in the past. How did you resolve it? I'd like to hear technical reasons why it's a bad idea to run ZVM under ZVM in production or why it's a good idea. Business reasons pro and con are welcome as well. The facts need to speak for themselves, not emotions. Any comments are welcome. Regards, _______________________ Jim Hughes "Impossible is just an opinion." -------------------------------------------------------- If you are not an intended recipient of this e-mail, please notify the sender, delete it and do not read, act upon, print, disclose, copy, retain or redistribute it. Click here for important additional terms relating to this e-mail. http://www.ml.com/email_terms/ --------------------------------------------------------
