Slow Replication over WAN - I suspect firmware upgrade now throttles replication.

Our headquarters office has a high quality 100mb Ethernet Internet connection and we are replicating to an offsite office that has a 12mb DSL line over a VPN connection. When we were on firmware 6.1, our replication hummed along at a rate of about 4-5 gb/hour. We added a new member and had to upgrade all members to 7.1.5 firmware in the process, including the remote site, but since then we are replicating at a much slower rate of 19mb /minute or about 1.1gb/hour. That is 25% of the speed it used to replicate at.

I called Tech support about this, but no issues were brought up. We did change from Jumbo to standard frames for replication using the "support repl-use-jumbos no" command, but this has made no difference. I'm not buying into any problems with latency in the line either, as using a Windows PC, from HQ to the remote office on the very same VPN Internet connection, I was able to transfer three binary files totaling 405mb in just under 6 minutes. That is a transfer rate of about 4.1 GB/hour using Windows drag and drop GUI file transfer. So the line is fine...

As you can see in the two random sampling of the SAN interface graphs below, there is no question that the SAN is throttling the bandwidth to around 1200KB/Sec, with occasional bursts of 15,000KB/Sec - the max speed of the line.

The SAN replication used to run flat-out and gobble up all the bandwidth available - now it appears to be 'playing nice' and is only using a percentage of the line speed - and in doing so, my replication schedules are no longer keeping up.

Any way to tell the san to run flat-out like it used to? Having a feature to be able to adjust that sure would be nice. Even better, it would be nice to have an optional scheduler to tell the SAN to replicate flat-out after hours and throttle during business hours.

However I just want it to run flat-out full speed ahead all the time like it used to. Can anyone help me with this?