So after reading on here and doing basic settings/tweaks (Jumbo frames, etc) I thought 15-18MB/sec writes and ~30MB/sec reads were as good as I was going to get.
After reading the recent thread on DroboFS benchmarks and changing buffer sizes, I did some searching…and found some really interesting, useful info.
I followed the “netsh” steps on the following page as well as made some registry changes, though I haven’t rebooted. The “netsh” commands are instantaneous.
What I also found is that even though I set MTU to 9000 in the Network Adapter settings for Windows, this DOES NOT set the MTU for the TCP/IP stack. It was still set to 1492! Likewise, the registry entry for MTU was 1492 as well.
After making the changes I’m now able to WRITE at 35-40MB/sec and READ at 45-50MB/sec. That’s more than double the write speed I was getting before. I have not changed the send or receive buffer sizes, though. I haven’t figured out how to do that yet.
Anyway, I thought this might help a lot of you frustrated with your DroboFS and Windows performance and might make you happy to know that it’s not necessarily the Drobo that’s the problem.