> -----Original Message-----
> From: IBM Mainframe Discussion List 
> [mailto:[EMAIL PROTECTED] On Behalf Of Edward Jaffe
> Sent: Wednesday, July 16, 2008 1:34 PM
> To: [email protected]
> Subject: Re: Moving 3390-3 to 3390-9
> 
> Jousma, David wrote:
> > Should have added that we have the product here, and it works well.
> > Here is the link for info for non-believers...
> > http://www-935.ibm.com/services/us/index.wss/offering/its/a1029927
> >   
> 
> Pretty slick! I was aware of the FDRPAS approach, which leverages the 
> operating system's DDR SWAP logic. I was unaware that similar 
> functionality could be had at the data set level. I wonder 
> how they do it?
> 
> And, if data can be moved while OPEN with data-set-level granularity, 
> why use products that offer only volume-level granularity?
> 
> -- 
> Edward E Jaffe

Remote replication? My guess is that replicating an entire volume would
have less overhead than doing each dataset on the volume separately. I'd
likely use TDMF/FDRPAS when moving from one storage array to a new one,
if the volumes were the same size. Using LDMF might be nice for
consolidating from multiple, smaller, volumes to a larger volume (like
the -3 to -9 in the subject).

I would guess that using LDMF to move a dataset requires that the
dataset be recatalogued when the copy is complete. I also wonder how
they do it. Perhaps with the "concurrent copy" capability to somehow
"trap" when a change is made to the source dataset?

--
John McKown
Senior Systems Programmer
HealthMarkets
Keeping the Promise of Affordable Coverage
Administrative Services Group
Information Technology

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