Promise Pegasus slow data transfer

Hi there,

I just bought the R6 and am using a RAID5 configuration with a 2011 MacBook Pro. I'm consistently getting about 150 or 200MB/s when transferring files (usually video) to and from the Pegasus. It also took twice as long as everyone says it does--a solid 20 hours--to synchronize/initialize the thing in the first place.

The AJA system test says I'm getting read and write speeds of 500 and 600MB/s, so I don't know what's going on.

Am I doing something wrong?

thanks,
jason