Ok. I am completely stuck here. I have two external raid arrays. Both are arranged in a Raid 5 and have 4 Seagate Barracuda 3TB drives in each. I have zero'd out the drives and checked them for errors using Seatools, so I know all the drives seem to be functioning well. When I run a benchmark on each of the Raid 5 arrays I see an average speed of 180MB/s over esata. Also, when I transfer a large file from the raid 5 to the SSD inside my laptop I see a stabilized speed of 140MB/s. However, when I transfer from 1 Raid 5 to the other Raid 5 it stabilizes at 30MB/s.
I have tried the transfer with both drives connected to USB 3, both connected to esata, and one connected to USB 3 with the other on esata. It always stabilizes at 30MB/s. Have updated all my drivers and still nothing. Please help me understand what is going on?? I have 5TB of data to transfer and this is going to take forever!
Well that resolved it. I was using the Seagate St3000DM001 series drives and they are not supported in Raid 5. I thought for sure they were. So, I swapped to Raid 10 and now have over 300MB/s speeds. Thanks Firewire2!