On Wednesday, 06/15/2011 at 04:23 EDT, Carlos Bodra - Pessoal 
<cbo...@terra.com.br> wrote:

> Can I use z/VM 5.4 as host to a z/OS 1.4 guest?

z/OS 1.8 is the oldest release that is *supported* by z/VM 5.4.  See 
Appendix B of the "Running Guest Operating Systems" book.

Will z/OS 1.4 *run*?  I don't see why not, as long as you have the z990 
Exploitation support installed per 
http://www-03.ibm.com/systems/z/os/zos/support/zos_server_support.html.

Alan Altmark

z/VM and Linux on System z Consultant
IBM System Lab Services and Training 
ibm.com/systems/services/labservices 
office: 607.429.3323
mobile; 607.321.7556
alan_altm...@us.ibm.com
IBM Endicott

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