I have had this unit for a few years now and i was never satisfied with the transfer speeds but as I was using this as an archive unit I was not to bothered about it. But over the past year my use of the FS has changed and I noticed the transfer rates compared to other devices I have is appallingly slow. I tested the read/write speeds over my local network and the write speed was 13.9 MB/s and the read was 21.3 MB/s.
My USB memory stick has faster transfer rates than this, I have searched all over the web and found many other reports about the performance of the FS but there are no solutions that can resolve my issues.
I am thinking of gambling by removing the existing disks from the units (numbering them of course) and place a few new disks and see how they perform.
One thing is for sure, I will never purchase another Drobo because of this experience and I will no longer be recommending Drobo to my contacts in the future too.