> Hope this is the right place to ask this question. > Please pardon the intrusion if I should be posting this someplace else.
You've come to the right list. Welcome to the party! > Our management is considering the acquisition of a new z114 > "sandbox" system primarily for testing new hardware (DASD and tape). > They would also like to conduct a z/Linux POC using the same machine. Sandbox ... good idea. And we're all zLinux people here. And most of us run z/VM too. > I know that z/Linux can run in native mode on a System z processor > but I wasn't sure about it running side by side with z/OS. > Can this be done using PR/SM and building separate LPARs > on the z114 for running z/Linux and z/OS together on the same machine? Yes. (but see below) > I know that the most sensible solution > would probably be to get a z/VM hypervisor > and run z/OS and z/Linux as guest operating systems under it. > However, there's a lot of resistance here to running > yet another operating system such as z/VM. Don't think of it as "yet another operating system". Just think of it as a hypervisor. Yes, there will be some VM-specific things required, but it is not unlike using VMware to host PC v-machines. > Any comments, advice, etc.? It is more common to run z/OS in one LPAR and z/VM in another. I recommend z/VM host all of your zLinux workload. Virtual machines are much more flexible than partitions. You can run z/OS in a virtual machine, but there is less incentive to do that these days. The size and nature of your z/OS system is such that it makes sense to leave it in its own LPAR. ALSO, there will probably be political reasons for doing that. (The z/OS guys will feel better not having VM under their system, and you mentioned resistance.) Since the demise of "basic mode" (now a decade ago), there is no longer the option of running z/VM without PR/SM. You will have at least one "partition" (LPAR). And one layer of SIE assist will be gobbled up by PR/SM. Since you MUST HAVE at least one LPAR, go ahead and create two. Let z/OS have one and let z/VM have the other. But a whole LPAR is kind of expensive to give to just one Linux instance, so run Linux on VM. > David Spring > Social Security Administration > DCS/OTSO/DMSS/MOSB > MVS Operating System Team > Desk: (410) 965-9309 > BB: (443) 379-7839 > Email: [email protected] -- -- R; Rick Troth Velocity Software http://www.velocitysoftware.com/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
