How to optimize concurrent restoration of multiple VLDB user DBs?
I think you are going to have to build your own tests for this one - there will be relatively few people who do this on a regular basis - (but happy to be proved wrong).
Is there a reason why you can't use VSS / SAN Snapshots to meet this requirement ?
Some standard best practices are going to help, i.e. use multiple backups files, use backup compression.
regarding restoring 2 VLDBs simultaneously I would try and ensure that each database has its own separate IO systems - so probably a Diskgroup &amp; dedicated controller on the SAN rather than just a separate set of LUNs, but talk to your storage admins as SANs vary widely with regards to best configuration.