How to securely wipe giant hard drives in a server?

Howdy,

We have a Dell Nutanix xc730xd server.  It has eight ~3.7 terabyte drives in it that we need to securely wipe.  I fired up DBAN and told it to do a 7 pass wipe on all 8 drives at once and that said it would take over 2 years to complete.

Figuring doing 8 drives at once wasn't the best idea, I decided to just do the normal 3 pass wipe and only target one drive. After running for 4 hours, it still said it had 1300 more hours to go.

Is there some other program to use or a setting somewhere that we can do a secure wipe on these drives and not have it take months?

Thanks.