Well, if you had a new install on z10+ and not an upgrade, it would certainly be the thing to do. For those of use with 10+ systems, it's not worth a jump. There wasn't even an ESP run for 6.1 since there was so little function that didn't go into 5.4. Some customers did get the new function SPEs early though and tested them extensively.
Marcy From: The IBM z/VM Operating System [mailto:[email protected]] On Behalf Of George Henke/NYLIC Sent: Thursday, October 14, 2010 10:45 AM To: [email protected] Subject: Re: [IBMVM] z10 and z/VM 6.1 >We've tried it and 6.1 will run as a guest of 5.4 on a z10. But will 6.1 run on a z9 or less? No, I've tried it. So for a "seamless" migration to new hardware, maybe it is not so bad to change one thing at a time and keep 5.4. True, there is less risk going from 6.1 to 6.2, than 5.4 to 6.2, but "tomorrow never comes", what happens today determines what happens tomorrow. The way IBM has configured things for 6.1: • shorter expiration date than 5.4, • not much new functionality, • no hardware "downward compatibility" below z10, 6.1 is, for all intents and purposes, a "dead release". Hope "Chuckie" isn't listening. Scott Rohling <[email protected]> Sent by: The IBM z/VM Operating System <[email protected]> 10/14/2010 01:27 PM Please respond to The IBM z/VM Operating System <[email protected]> To [email protected] cc Subject Re: z10 and z/VM 6.1 We've tried it and 6.1 will run as a guest of 5.4 on a z10.. If you're swinging all your DASD over to the z10 - you could just bring up z/VM 5.4 -- build your 2nd level 6.1 guest - merge and migrate and bring up 6.1 1st level... Scott rohling On Thu, Oct 14, 2010 at 11:21 AM, Bruce Hayden <[email protected]> wrote: I haven't tried it, but 6.1 should run as a guest of 5.4 on a z10 (or later.) z/VM does not "hide" or "downgrade" the architecture of the machine from the guest (as much as possible), so the machine features needed by 6.1 should still be available to a guest of 5.4 on a z10. On Thu, Oct 14, 2010 at 11:17 AM, Frank M. Ramaekers <[email protected]> wrote: We are installing a z10 this weekend with z/VM 5.4. My question is what are my migration options for migration to z/VM 6.1? I don’t suppose that 6.1 can run under 5.4, since 6.1 requires a z10+ and 5.4 does not? (If so, problem solved. Otherwise it looks I’ll be limited to 1. LPAR the z/VM 6.1 or 2. Run the production 5.4 under 6.1) Frank M. Ramaekers Jr. Systems Programmer MCP, MCP+I, MCSE & RHCE American Income Life Insurance Co. Phone: (254)761-6649 1200 Wooded Acres Dr. Fax: (254)741-5777 Waco, Texas 76701 _____________________________________________________ This message contains information which is privileged and confidential and is solely for the use of the intended recipient. If you are not the intended recipient, be aware that any review, disclosure, copying, distribution, or use of the contents of this message is strictly prohibited. If you have received this in error, please destroy it immediately and notify us at [email protected]. -- Bruce Hayden z/VM and Linux on System z ATS IBM, Endicott, NY
