I have an external hard drive set up in RAID 1 configuration, however it is taking ages to transfer things. 55 minutes to transfer 11GB's. It is literally going at 4MB/s (37Mbps). Is this because it is having to write the same data to both drives? I've looked at guides on the speeds for RAID 1 configs and they don't seem to go as slow as 4MB/s. It seems to speed up after a while, and it depends on the file. Basically, is this normal or have I got some dodgy drives?