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  • Subject: Re: V3R7 to V4R5 Data Sharing
  • From: Pete Hall <pbhall@xxxxxxxxxx>
  • Date: Wed, 22 Nov 2000 19:23:40 -0600

At 17:10 11/21/2000, Kirk Goins wrote:
>We have a client V3R7 on  a 500. No SW Subscription and a cost of
>something like $58k to get current. This 500 and it's function will most
>likely go away in a year or so.
>
>They are buying a new 820 and will need to #1 migrate a large amount
>(30+gb) of data and programs to the new 820. Once the 820 is up then maybe
>250-500mb of data will need to be transferred daily both ways.
>
>I know the official line is 4.5 won't support below 4.2 or 4.3 I forget. I
>know we can't use save files to go 4.5 to 3.7. So here are some questions
>
>#1 Will 4.5 read save tapes from 3.7?
>#2 Will 4.5 read SaveFiles from 3.7?
>
>#3 If a PF is created and populated on 3.7 on the 500 and the file is
>created and empty on 4.5 on the 820, can we FTP that file to the 820?
>#4 How about #3 above but create on 4.5 and ftp to 3.7?
>
>#5 Can we get DDM to work between these 2 systems or are they too far
>apart OS wise?
>
>#6 Other options?

Well, based on previous experience, but not on 3.7-4.5, my guess is that 
you will be able to save on the 500 and restore on the 820, no problem, 
using either save files or tapes (watch tape density/device capability 
though). You will also be able to FTP in either direction, because FTP is 
just moving a byte stream. There is no inherent object formatting involved, 
so OS level is moot. I don't know about DDM, but I would expect it to work, 
since you can run DDM from non-AS/400 systems. However, you will need to be 
careful about using objects on the 820 from the 500 that are not available 
at V3.7, like encoded vector indexes. (I'm really not sure how you'd use 
one of those via DDM anyway.) With a little caution, you should be fine as 
long as you test the connectivity piece thoroughly and you're not compiling 
programs on the 820 for use on the 500.
Pete Hall
pbhall@execpc.com
http://www.execpc.com/~pbhall/

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