My research tells me you can do this with General Purpose CP's as well as IFL's. The down side of using CP's instead of IFL's is that the CPU capacity used by the Coupling Facility are counted in the total size of the machine for software licensing purposes. You can even share CP's between an Internal Coupling Facility (ICF) and z/OS LPAR's, but that is very highly "not recommended". Check out the "IBM @eserver zSeries 890 and z/OS Reference Guide", particularly page 43.
We're planning for parallel sysplex (current configuration is 3 z/OS LPAR's on a z890), and intend to buy a single z900 coupling facility, and define an ICF on our z890 using shared CP's as a backup in case of hardware failure on the z900. We would never try to run duplexed CF's with this configuration -- the z890 ICF would remain down except in the case of a catastrophic failure of the z900. We're not going for redundancy, just trying to reduce planned outages via Parallel Sysplex. Regards, Cathy On Fri, 27 Jan 2006 08:30:02 -0600, McKown, John <[EMAIL PROTECTED]> wrote: >> -----Original Message----- >> From: IBM Mainframe Discussion List >> [mailto:[EMAIL PROTECTED] On Behalf Of Rich Tabor >> Sent: Friday, January 27, 2006 8:27 AM >> To: IBM-MAIN@BAMA.UA.EDU >> Subject: Z890 CF LPAR >> >> >> Is it possible to partition a Z890 into an LPAR that functions as a >> coupling facility? > >Yes. I've done it. It is "not recommended" by IBM. But I had a "spare" >IFL that I could dedicate to the CF partition and it works just fine. > >-- >John McKown >Senior Systems Programmer >UICI Insurance Center >Information Technology ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
