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Message Posted: Tue, 05 Jan 2010 @ 15:15:35 GMT

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Subj:   Re: Merging 2 systems
From:   John Adams

  From: Leslie, Quincy  

  I know this is not on point to your question. But curiosity compels me to ask why management is not retaining server 2 for business continuity purposes and replicating the server 1 data to server 2. Is server 2 going to be backfilled with an upgrade, once the current server 2 is 'retired'?  

  Will you be left with just a single TD server?  

Hi, Quincy (which I usually say to my daughter),

When I engaged in this exercise some time back, we were merging a 1 TB system and a 3 TB system into a nice new larger system (10 TB, I think), via a node expansion on the 3 TB system, and dedicating the old 1 TB system to test and development work.

Given the cost of a Teradata installation of any size, I don't find it surprising that business continuity often doesn't justify that second system.

I've seen identical systems are maintained in parallel, but that driven by load balancing. Business continuity was a pleasant side-effect.


John A

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