Upgrades included in Ditto Firmware revision 2017Apr18a.

1. New features:
   1. Replacement for the 2017Mar02a firmware release.
   2. Increased Maximum File Size and Maximum Volume Size for SMB and NFS file shares to 4TB and 32TB respectfully. Note: Network share Maximum File Size and Maximum Volume Size are controlled by the network storage server. Consult with your server administrator or manufacturer about size restrictions and set the Image File Segment Size parameter accordingly.
2. Bug fixes:
   1. Fixed intermediate issue on Ditto-DX during Physical Image of large capacity source drives to dual destination drives.