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Configure overwrite

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Hello all.  I am trying to setup replication for 10 databases between 2 servers.  For simplicity, I will call them Server 1 and Server 2.  I am able to get replication working, but I am wanting to use a UNC path for the data storage.  the snapshot data will use an average of 18GB per day for total snapshot usage.   Ideally, I do not want this data to reside on Server 1 itself, but on one of my mass storage devices before it is pulled to Server 2.  I am wanting to know best practice for using UNC paths.  I would like to know specifically, how to overwrite the replicated data from the previous day.  I am fine with their being a static or floating ~20Gb on Server 2, but I would like to know how the data would flow.  If I use a UNC path to storage on Server 2, when the schedule hits the specified time ( by the way I have 2 schedules setup.  1 to take the snapshot, then another later on for the replication) to replicate the data to Server 2 does the data have to flow back to Server 1 before it applies the SQL data to Server 2 or is it smart enough to know that if the data is already sitting there, and to just apply it?

Thanks in Advance!


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