John - Thanks for the definition. That brings furthur questions. How does data get into the cache that can't be written to disk? Is that something caused by a power failure for the device, or some other failure? Also, I would think that if that condition can cause the 2107 not to work, that there should be some easy way for the customer to push a button or type in something on the service console to clear the cache. To me it sounds like a design flaw, although I haven't kept up with the technical details of the 2107 as well as I should be.

Eric

Eric Bielefeld
Sr. Systems Programmer
Milwaukee, Wisconsin
414-475-7434


----- Original Message ----- From: "McKown, John" <[email protected]>

-----Original Message-----
From: IBM Mainframe Discussion List
[mailto:[email protected]] On Behalf Of Eric Bielefeld
Sent: Tuesday, July 07, 2009 2:50 PM
To: [email protected]
Subject: Re: Pinned data on 2107 aka DS8000

I hate to ask a dumb question, but what is pinned data?  I'm
sure I once
knew the answer to that question, but I can't for the life of
me remember
what it is.

Eric Bielefeld

Data in cache which cannot be flushed onto the physical DASD, IIRC.

--
John McKown
Systems Engineer IV
IT

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