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by mathias_10gen
5822 days ago
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No, it is a suggested configuration, not the suggested one. And recommending three nodes is not that uncommon for distributed systems, because you cant have a quorum with only two nodes. Some users are more concerned with handling 10s or 100s of servers than having single-server durability. That said, for most users two servers are fine. Other users don't need any replicas at all since they do a nightly dump from a stored source into mongodb, or they just take regular backups. There are many ways to achieve system-wide durability, not all of them require the database to be durable. |
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