Radoslaw Skorupka wrote: >Just to make sure I understood it: >Let's assume I have z/VM licensed for 2 processors and machine >5CP+2IFL+2ICF+2zIIP, and another machine 1CP. Before the announcement I >was able to legally run z/VM on IFLs on primary machine or on 1CP on >secondary machine (but not concurrently: primary machine ex-or another).
Correct. >After the change I can define z/VM LPAR on 1CP+1IFL - is it true? Yes, that's right. Or you can run z/VM on one engine (CP or IFL) on the first machine and also run z/VM on the one CP on the other machine, at the same time. You can change your mind about which two engines. And change your mind again. If you're licensed for two z/VM engines, you're licensed for two engines. If your enterprise runs z/VM on two engines, then you need 20 "Value Units" of z/VM and any associated products. You can find the conversion table from engines to Value Units in Value Unit Exhibit 021 (VUE021) here: https://www.ibm.com/systems/z/resources/swprice/zipla/vue.html As IBM's announcement letter explains, you're obliged to collect and to retain sub-capacity usage data when you run z/VM in sub-capacity fashion, but that's straightforward to do and shouldn't be surprising. z/VM 6.3 is the minimum release level that supports sub-capacity licensing. The capacity/throughput of an engine still doesn't matter for z/VM licensing purposes. For example, if you have an IBM z13s Capacity Model B01, that machine has one CP. If you run z/VM on that one CP, you count it as one engine. If you have an IBM z13s Capacity Model X01, that's a higher capacity/throughput CP. However, it's still one engine, and it's still counted as one engine for z/VM licensing. Thus, if you have a choice (maybe not), and if you're running z/VM on one or more CPs, you probably should pick your "tallest" (highest capacity/throughput) CPs. >What about ICF engines? >What about zIIP engines? No change. These speciality engines for z/OS didn't require additional software licenses and still don't. You could/can freely add them to your z/OS environment(s) (with or without z/VM) as you wish and with no software licensing implications. Permitted workloads do not change either. IFLs are still for Linux (and for OpenSolaris, as a historical curiosity anyway), with or without z/VM.(*) Other, "classic" z/VM workloads still require running z/VM on CPs, even if z/VM is *technically* able to execute on IFLs. However, all these types of workloads (Linux and non-Linux) can benefit from sub-capacity z/VM licensing. Please consult the announcement letter for the official line, but the above is my understanding. It's all positive news. (*) That includes workloads that run on z/VM itself, including CMS workloads, as long as they're related to Linux. To pick an example, you can run the IBM Directory Server (LDAP) included with z/VM, with Linux guests connecting to that LDAP server as much as you like, all on IFLs. You just need to make sure you have enough licenses for the IFL(s) where you run z/VM. -------------------------------------------------------------------------------------------------------- Timothy Sipples IT Architect Executive, Industry Solutions, IBM z Systems, AP/GCG/MEA E-Mail: sipp...@sg.ibm.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
