Of course z/VM can run any/all IBM Z operating systems, including both z/VSE and Linux. And it can do so within even a single z/VM LPAR. There are some significant resource and operational efficiencies in that sort of configuration.
In 2017 IBM announced general availability of sub-capacity licensing for z/VM, so you can now license z/VM one engine at a time. Previously you had to license z/VM for all the IFLs, all the CPs, or both, per machine. Let's suppose for example you have 1 IFL and 3 CPs -- machine capacity model 3907-C03 with 1 IFL as an example. You could configure a z/VM LPAR that spans the IFL and one CP (shared or dedicated), and that would require only 2 engines of z/VM licensing (down from the 4 previously required in this scenario). z/VSE could then run both in its own LPAR(s) and within the z/VM LPAR. Many variations are possible, of course, but that's one sample variation. Either way (or both), I very much like the idea of using a second level hypervisor to run Linux, and to do so right at the beginning. Then you really don't have to give much thought to adding more Linux instances, even if the "new" Linux instances are for release upgrade reasons. It's not hard to do. In fact, in some ways it's easier to start off with a second level hypervisor. - - - - - - - - - - Timothy Sipples I.T. Architect Executive Digital Asset & Other Industry Solutions IBM Z & LinuxONE - - - - - - - - - - E-Mail: sipp...@sg.ibm.com ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
