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From Rene Kochen <>
Subject Backup solution
Date Thu, 14 Mar 2013 14:30:42 GMT
Hi all,

Is the following a good backup solution.

Create two data-centers:

- A live data-center with multiple nodes (commodity hardware). Clients
connect to this cluster with LOCAL_QUORUM.
- A backup data-center with 1 node (with fast SSDs). Clients do not connect
to this cluster. Cluster only used for creating and storing snapshots.


- No snapshots and bulk network I/O (transfer snapshots) needed on the live
- Clients are not slowed down because writes to the backup data-center are
- On the backup cluster snapshots are made on a regular basis. This again
does not affect the live cluster.
- The back-up cluster does not need to process client requests/reads, so we
need less machines for the backup cluster than the live cluster.

Are there any disadvantages with this approach?


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