I'm also curious about performance differences vis a vis volatility. In the
early days of parallel sysplex, some exploiters used the volatility
indicator when deciding whether a CF was acceptable for structure
allocation. I haven't heard much of that in years. We recently upgraded a
couple of CECs and therefore had to set up new ICF LPARs. Even my IBM rep
recommended setting them nonvolatile because we have several backup power
sources.
We stopped ordering the internal battery long before we moved from
standalone to internal CF.
.
.
JO.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler
SHARE MVS Program Co-Manager
626-302-7535 Office
323-715-0595 Mobile
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Discussion List Subject
<[EMAIL PROTECTED] Re: Setting Coupling Facility
.EDU> VOLATILE: NO
07/03/2008 06:17
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<[EMAIL PROTECTED]
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"Knutson, Sam" <[EMAIL PROTECTED]> wrote in message
news:<[EMAIL PROTECTED]>.
..
> Hi,
>
>
>
> I have been looking at Logger performance as we have increases
> significantly the amount of data going into Logger in the last few
> years.
>
> One thing I am considering in conjunction with our next CEC
installation
> is to have the z/OS team set the ICF partition in the new CEC as
> VOLATILE: NO.
>
> With a non-volatile CF in another failure domain (CEC) it looks like I
> could improve throughput and reduce I/O on some of my heavily used
> logstreams.
>
Where and why do you forsee the improvements?
AFAIK a CF in the same CEC, connected with internal microcode emulated
CF links, is still much faster than external links to a CF in another
CEC. So you mean you can improve performance by moving to an external
CF?
Kees.
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