CEPH Replication

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Hi all,

I have one question

Why did default replication change to 3 in Ceph Firefly? I think 2 copys of object is enough for backup. And increase the number of replication also increase latency when object has to be replicated to secondary and tertiory OSD.

So why default replication is 3, not 2 or 4 or other numbers?

Thanks and regards.


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