In my opinion it is best to have someone in your engineering or document control department as the EPDM administrator. Someone that understands your engineering process. They could share some duties with someone in your IT department for backing up your vault and help in installing the software.
Setting up the vault depends on what all you want to accomplish with EPDM and the capabilities of your VAR. Not all VARs are created equally, especially with EPDM. If you are wanting to integrate EPDM with ERP or MRP, then only a handfull of VARs have this capability.
thanks a lot your valuable comments. also have a any ideas.