MK,
Your temporary server will simply have SQL Server 2008 R2 installed and the EDMT tool, you will not need anything else. On your AW/HDS server that's hosting 9.0, take a full backup of that _hds database. If you're doing the backup to somewhere local, make sure you have plenty of disk space. Once your backup is done, move the .bak file to your temporary server by using whatever means to move files across the network - a UNC path is what I usually do. Once your .bak file is on the temp server, open SQL Server 2008 R2 and restore the database using the same name. Once it's restored, run the 10.5 EDMT tool to update the database schema to 10.5 - select common ground when you're prompted. Once that's complete, make a backup of the 10.5 database (again, make sure you have plenty of space) and move it to the v11 server. Once on the v11 server, open SQL Server 2014 and restore the 10.5 database. Once restored, run the v11 EDMT tool (common ground)... and at the conclusion of it, you should have a database schema that's for version 11.
