Recently Seagate began really pushing the high end of the storage market again with the launch of their Enterprise Capacity 3.5 v4 range. With models at 5TB and 6TB we can create some pretty spectacular storage systems but they are more than just that. Seagate have also tuned them for high performance... so massive capacity and speeds quoted over 200MB/s read/write from a single mechanical drive? Today we have the 6TB version attached to our system, let's see if it can live up to the claims.