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From: prince1099 on 13 Oct 2009 19:55
Hi,
For a Architecture / Infrastructure technology quote to get a job, I
need to pull together some info on Replication Engines....(Only one I
know is Data eXtend RE)
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Do you have any Info on this subject?
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Do you have one or more recommendations for Replication Engines that
will sync 60 Terabytes of data to five regional data centers around
the world?

60 Terabytes will be clinical data and probably, another will be 60
Terabytes of read-only Global Data Warehouse storage, and still
another separate replication will be 50 Terabytes of image data.

Of course query-only data is easy with vendors like Akamai but
Production data is another story.
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/ Thanks.
From: Paul Ibison on 14 Oct 2009 17:49
There are many questions I'd have like how much of the data changes and how
frequently, but to be honest replicating this quantity of data
bidirectionally is well beyond my experience. However you might want to get
MS involved with this and see if they take it up as a pilot project. You
might also look at some SAN-based replication technologies. They won't give
you bidirectional changes to a database but it might be possible to do the
data changes locally against a SAN copy using your own methodology.
HTH,
Paul Ibison

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