to restore an archive, you're going to have to create a temporary site and restore the vault stores to that site.
you will need to restore every vault store and vault store partition if you have sharing enabled in a vault store group, and then after that , you would have to export the users Archive to a PST.
So typically what i've done in the past is
1. Create two virtual servers, one that will host the SQL Databases and one that will host the EV Server
2. Use the Powershell scripts in the EV9 media to install all the pre-requisites (MSMQ etc)
3. Restore Each partition from each vault store to the 1 server
4. Install SQL Server and then the EV server but don't run configuration
5. Restore the databases from backups to the temporary SQL Server, so this has to be the database just before you deleted the user
6. On the EV Server, add your alias and computer names to your HOSTS file
So for instance in production you might have
evSite (CNAM) -> EVServer1 (CName)
EVServer1 -> MachineA,myDomain.com
EVServer2 -> MachineB.myDomain.com
EVServer3 -> MachineC.myDomain.com
Put in Host entries so it would be like
127.0.0.1 evSite
127.0.0.1 evServer1
127.0.0.1 evServer2
127.0.0.1 evServer3
127.0.0.1 machineA
127.0.0.1 machineA.myDomain.com
127.0.0.1 machineB
127.0.0.1 machineB.myDomain.com
127.0.0.1 machineC
127.0.0.1 machineC.myDomain.com
The idea being that the new temporary server won't interfere with production servers.
7. Update the VaultStoreEntry table with the temp SQL Server so we're not talking to the prod SQL
8. Update the PartitionEntry table so its looking in the correct locations for the Partitions
9. Update the FingerPrintCatalogueDatabase table to look at the temp SQL Server
10. Update the ComputerEntry table and update each ComputerNameAlternate to be the temporary EV Server name
10. Run the EV Configuration wizard, and tell it to use the temp SQL Server
11. It should see that the computer is present in the database and repair the configuration
12. Go to your services and shut down the Indexing service so it doesn't try to rebuild any indexes
13. Go to the VAC and then export the users archive to a PST
