Shashi Kanth Boddula wrote:
> My idea is to implement DRBD to mirror the database between primary
> and secondary . But , i want to know can DRBD suite this requirement

Sure.  This is a fairly common setup.

> And , is there any limitation while using DRBD in a WAN
> environment .

Sure.  It will be slow.  But you should test yourself just how slow it 
will be.

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/

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