On Thursday, 01/10/2002 at 10:06 CST, Tom Duerbusch <[EMAIL PROTECTED]> wrote: > I would have to add, that from a licensing issue, ISX wouldn't look too > attractive. Consider... > > Linux is free. However, most important Linux applications are not free. They > are normally charged based on a server license (per engine pricing). > > So, if you bring up Websphere under ISX under MVS, you would have to buy a copy > for each S/390 engine on your system. Of course, if you are a small MVS shop > (1 engine) no problem. You may also need DB2 UDB for each S/390 engine (even > if you have DB2 for MVS licensed). > > It may be attractive if you have a processor that doesn't support IFL engines. > But in any case, many MVS shops are very LPAR literate. They could bring up a > LINUX LPAR for testing. (still have the licensing problems) > > From my small MP3000 being installed now, I've mentally going though the Linux > process for the next 2-3 years. We have a H30, single engine. We will have > resources available for some Linux images under VM. I can see us expanding > into an IFL engine. But, if I continue to run Linux under the S390 processor > and not move all of it to the IFL engine, I need to double license all Linux > products (1 S/390 engine, 1 IFL engine). Then again, the S/390 engine will > have plenty of resources available and nothing to use it on. That is, until > the IFL engine runs out of resources. Then we either license the Linux > applications on the S/390 engine again, or get a new box that, perhaps, has > more IFL resources available.
To put a finer point on it, unless you have the headroom on your MVS system (and CPUs) to absorb Linux workload, you'll need additional *standard* engines, driving up the model group for MVS and its software stack, probably overshadowing any Linux s/w expense. Regards, Alan IBM Senior Software Engineer z/VM Development, Endicott, NY Phone 607.752.6027 fax 607.752.1497 t/l 852
