Troubleshooting issue on throughput

Hi!
I'm in a bind now on an issue for 2 storage devices. One storage device is in the US and the other is in Singapore. The issue is that when we do an iperf test from US to Singapore, we get 6Mbps but from Singapore to US, we only get 1Mbps. Replication right now is quite slow and is lagging. Any thoughts?
Thanks.

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Posting
"Any thoughts?"
Many, because there are many possible issues. Need more information to have any constructive thoughts or suggestions.
What kind of WAN topology is this running across? What are contracted bandwidths, both logical and physical? What protocol is replication using? What usage and interface stats to you have?

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11th World Productions wrote:
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