you can do more than one at a time... Might shorten the task.
You know I feel sort of stupid I know you could open more than one terminal why did I not put two and two together..... Anyway Thanks! I have 6 drives going now.
Also for anyone wondering.
32 hours to clear: HITACHI Deskstar (0S03208) 3TB 7200 RPM SATA 6.0Gb/s 3.5"
41 hours per drive to clear: Data Drives: 10x HITACHI Deskstar (0S03230( 3TB 5400 RPM 32MB Cache SATA 6.0Gb/s 3.5"
21 hours to clear: Cache Drive: HITACHI Deskstar (0F13180) 1TB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5"