Client currently has multiple R7 servers but needs to upgrade their fax server software (Eskerfax) and wants to put R8.5.x in to start with on the new 2008 R2 server rather than keeping with 7.0.x and having to upgrade over coming months.
Now... of course we normally always update the admin server first etc. and I have always ran the "right" NAB version for the newest server, but I have seen people running R8 design with R7 servers for instance.
In this case they want to keep the R7 design and run the 8.5.x servers so would appreciate any thoughts, or links to tech docs which back up that this is OK.
The IBM (and other) documents I have found show that people have run with R8 NAB on R7 but haven't seen any official IBM docs on it, and we are talking the other way around.
So in summary ---> 5-6 x R7 servers. One to be replaced with new built R 8.5.x server but without upgrading directory.
Was thinking would just "say no" to upgrading design on first startup, remove the pubnames.ntf and admin4.ntf templates and turn off design task for starters.
Any comments appreciated.