Ada Annex E for cloud computing anyone?

I want to create a 100% Ada complex web system.
The database component should be distributed, for safety thru redundancy.
So naturally I wanted to use Annex E.
Seemingly at the momemnt only one Ada compiler supports Annex E: GNAT.
The support comes from Adacore in the form of their Polyorb product, which also supports CORBA and other middleware items.
Good thing: these technologies are free.
Bad thing: there are no other, failsafe, Annex E technologies, free or otherwise.
Just a few bits of (essential) information for now.
To be continued, hopefully.
I will try build an Ada Distributed Application (check the acronym of this) based on Adacore GNAT GPL 2011 and Polyorb.
It will take a long time...
Anyone care to help?