VTL's and D2D solutions

[Kevin Boatright]

We are currently looking at adding a Disk to Disk backup solution.  Our current 
solution has a 3584 tape library with LTO-5 drives using TKLM.
 
We have looked at Exagrid and Data Domain.  Also, I believe HP has a solution.
 
We will need to have encryption on the device and the ability to replicate 
between the two disk units.
 
Anyone have any comments or recommendations?  
 
Thanks,
Kevin