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Subject: Efficiency of Cross Data Center Replication...?
From: Brian Fleming <bigbrianfleming@gmail.com>
To: user@cassandra.apache.org
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Hi All,

I have a question about inter-data centre replication : if you have 2 Data
Centers, each with a local RF of 2 (i.e. total RF of 4) and write to a node
in DC1, how efficient is the replication to DC2 - i.e. is that data :
 - replicated over to a single node in DC2 once and internally replicated
 or
 - replicated explicitly to two separate nodes?

Obviously from a LAN resource utilisation perspective, the former would be
preferable.

Many thanks,

Brian

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<br><div>Hi All,</div><div>=A0</div><div>I have a question about inter-data=
 centre replication : if you have 2 Data Centers, each with a local RF of 2=
 (i.e. total RF of 4) and write to a node in DC1, how efficient is the repl=
ication to DC2 - i.e. is that data :</div>
<div>=A0- replicated over to a single node in DC2 once and internally repli=
cated</div><div>=A0or=A0</div><div>=A0- replicated explicitly to two separa=
te nodes?</div><div><br></div><div>Obviously from a LAN resource utilisatio=
n perspective, the former would be preferable.</div>
<div><br></div><div>Many thanks,</div><div><br></div><div>Brian</div><div><=
br></div>

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