The big question is, if an LPAR has mixed IFLs and CPs, does having the IFLs available for Linux processing affect the license fees for software running on the CPs? Also, does the existence of the CPs in the LPAR affect the fees for software running on IFLs?
Regards, Richard Schuh > -----Original Message----- > From: The IBM z/VM Operating System > [mailto:ib...@listserv.uark.edu] On Behalf Of Alan Altmark > Sent: Wednesday, July 14, 2010 10:06 AM > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: question to mixed CP an IFL in one LPAR > > On Wednesday, 07/14/2010 at 12:29 EDT, Dave Jones > <d...@vsoft-software.com> wrote: > > Mike's explanation as to why Linux LPARs should have only IFLs > > available is spot on.....this write-up would be a good > candidate for > > the wiki, I think. > > Let's be careful with terminology. There are three relevant > LPAR "modes": > o A "Linux only" mode LPAR is a term used by the HMC to > refer to an LPAR that has only IFLs, by defintion. > o A "z/VM" mode LPAR has at least one CP and may also have > one or more IFLs. If you want a virtual machine to run on > IFLs in a z/VM mode LPAR, then you must alter the directory > entry for that virtual machine. > o An "ESA/390" mode LPAR has only CPs. > > Linux should run on IFLs whenever possible and advisable, > letting common sense, your performance monitors, and your > wallet be your guides. I hesitate to use the vague term > "Linux LPARs" since a z/VM mode LPAR can be both a Linux LPAR > and z/OS LPAR simultaneously. > > Alan Altmark > z/VM Development > IBM Endicott >
