Just a warning. I have been looking at PDM for a couple of years. This was to reduce crashing. I was testing on a single machine and while I was not sure that it would help the crashing issue it seems like a good idea for other reasons.
Over the course of the two years I specifically asked tech support if there was a limitation on the number of people that could access the vault. I was told that I could install vault views on as many machines as I wanted. Turns out that while being technically true it is not the full truth. The full truth is that a user needs a license to access the vault. You will be limited by the number of PDM licenses you have. If you only have two licenses for Solidworks Professional you will only be allowed two logged in users in the vault at any one time.
Tech support gave a couple of suggestions like working offline (saves a local, non checked out copy) and some kind of saving of a PDF. Neither of these are good options.
I really feel like I was lied to...