BackupExec, Hyper-V, HP D2d4009i, and HP 1x8 G2 Autoloader issues

We currently upgraded everything in regards to our network.  We have implemented VM's using Hyper-V, replaced our old tape Changer with an HP 1x8 G2 Autoloader and implemented a HP D2D4009i Disk backup system.

We have the D2D connected via iSCSI and have noticed that we can only get BackupExec 12.5 to recognize it as a Robotic Library.  The new HP 1x8 G2 Autoloader shows as a Stand-Alone Drive and only when a tape is in the carrier does it recognize any media.  The backups take forever (sometime 13-40+hours) when they used to take less than 12 before.  What are we doing wrong?  Is there a better way to do this?

Here is how we are utilizing the system:
Daily Differential - Going to D2D
Weekly Full - Going to D2D
Monthyl Full - Going to D2D then to tape (only really needs to go to tape if we could get the backup time down from 40+hours so that a Weekyl can be written to D2D and monthly to Tape only for offsite retention.

Any help would be appreciated.