-----Original Message-----
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
Behalf Of Scott Rowe
Sent: Friday, August 07, 2009 8:51 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: DASD: to share or not to share
Heck, I just use a CF partition running on my shared CP. As long as
you
I've heard lots of scary stories about sharing CPs for CF. I understood
the CF code was basically a non-terminating loop.
I've even heard of folks using a CF lpar as a MSU soaker to keep z/OS
MSU's down for SCRT purposes.
I certainly don't want any hang of my production system because I shared
with a CF.
are only doing GRS, and maybe HSM CRQm etc, there is no problem. My
two
CF partitions combined average about 0.2% of my CPUs. It may not be
as
fast as dedicated CPs, but it is still faster than GRS ring.
>>> "Gibney, Dave" <gib...@wsu.edu> 08/06/09 5:23 PM >>>
When ICF's are free, maybe we'll consider it :) I share resvols and
other volumes with software load and other read only type operational
data between some or all of our 4 LPARs with no appreciable impact.
Dave Gibney
Information Technology Services
Washington State University
> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
> Behalf Of Chase, John
> Sent: Thursday, August 06, 2009 12:32 PM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: DASD: to share or not to share
>
> > -----Original Message-----
> > From: IBM Mainframe Discussion List On Behalf Of McKown, John
> >
> > [ snip ]
> >
> > A basic SYSPLEX (what we are running) does not require a Coupling
> Facility (CF). With a CF, you have a
> > Parallel Sysplex, which has some better facilities. If you only
have
> an single CEC (box), then you
> > don't need a Sysplex Timer, either. And, if you're on a single
box,
> you could get an CFL speciality
> > engine and run a single CF in a separate LPAR. In this case, there
is
> no cabling required - it used
> > "pseudo cabling" via the PR/SM hipervisor. Much like hipersockets.
>
> You must be wishing really hard for an IFL. :-)
>
> The "Integrated Coupling Facility" engine is an "ICF" (more overload
> for
> ICF).
>
> -jc-
>
>
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