Copying data between clusters

Kevin Smith ksmith at
Sat May 8 00:17:26 EDT 2010

Alan -

I can't answer your replication questions -- don't have a lot of experience with it yet -- but I can take a stab at setting the global replication setting.

If I'm understanding correctly I believe you're referring to the N value. N controls how many replicas of an entry Riak stores, in total, around the cluster. Docs on tuning this value can be found here:


On May 7, 2010, at 10:06 PM, Alan McConnell wrote:

> 	• Is it possible to use the built-in backup/restore functions of riak-admin to copy data between clusters?  The scenario is that we have separate test and production environments, each with separate riak clusters of different sizes and configurations.  Every so often we'd like to copy the data from production into test.  Can I run 'backup all' in prod, then run restore on the resultant file in test, and have everything work?  Or does restore only work on the same cluster configuration that the backup was performed on?  What's the easiest way of doing this?
> 	• I've noticed that backup takes a very long time, and results in a file that is much larger than the actual cluster data directories of the cluster.  Is this normal?
> 	• Not related to backups, but how do I configure the global replication count of the cluster?
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