On Thursday, 07/26/2012 at 09:48 EDT, "van Sleeuwen, Berry" <berry.vansleeu...@atos.net> wrote: > I don't think it's wise to have z/VM running Linux and z/OS load in the same > LPAR. Reason for this would be a license issue. The CP costs more than an IFL > and when running z/OS and Linux in the same LPAR you might have to pay a z/OS > license fee for the Linux load you run. So at the very least, use two LPARs, > one with a CP for z/OS and one with an IFL for Linux. (and preferably z/VM in > the Linux LPAR)
The z10, z196, and z114 all have z/VM-mode LPARs. This allows all engine types to be placed in the LPAR. Linux guest can run on IFLs, z/OS guests (for testing maybe) can run on CPs, and virtual coupling facility can run on real CFs. zIIPs and zAAPs are in there, too, for use by the z/OS guests. This addresses much of the z/OS pricing issue for mixed z/OS and Linux workloads, but be aware that the price of z/VM itself will include ALL of the CPs on the box (in addition to the IFLs, of course), regardless of how many are being used in the z/VM-mode LPARs. If that seems unreasonable for your particular configuration, take it up with your salesman. By "much of" I mean that running z/OS on z/VM isn't free. If you have subcapacity z/OS pricing, then you still have to run SCRT in the z/OS virtual machines, too. Further, the master VM processor will always be a CP in this configuration, as CPs are the "primary" CPU type, so it won't be just z/OS using the CPs. (At least one CP must be in a z/VM mode LPAR.) All that to say that the wisdom from the Before Times no longer applies. Alan Altmark Senior Managing z/VM and Linux 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 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu 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/
