Disk to Disk(D2D) is a new trend. The cost of disk is diminishing quickly,especially with regard to the cost of tape.Is this good?Yes, Is it as good as the hype?Yes and No. D2D does not eliminate tape,but it does offer an additional method for taming your data management challenges.
I suggest erveryone reading this paper first take a step back, widening your lens and taking a picture of your entir following questions to properly assess the value of D2D for your compan.
