I have a DroboPro with 8 2TB drives in a Single drive failure configuration. I am writing a 20GB file to the DroboPro over a 1Gb ISCSI connection. The write starts out at about 50-60MB/s and has no problems until about a minute into it. After this the speed drops to about 2MB/s and stays there until the write is complete.
I’m on the latest firmware/dashboard and there are no errors on any of the drives. I’ve restarted the Drobo with the same result.