CEPH Replication

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Hello,

 

Looking at setting up a new CEPH Cluster, starting with the following.

 

3 x CEPH OSD Servers

 

Each Server:

 

20Gbps Network

12 OSD’s

SSD Journal

 

Looking at running with replication of 2, will there be any issues using 3 nodes with a replication of two, this should “technically” give me ½ the available total capacity of the 3 node’s?

 

Will the CRUSH map automaticly setup each 12 OSD’s as a separate group, so that the two replicated objects are put on separate OSD servers?

 

Thanks,

Ashley

 

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