many of our clients with GW have stayed with GW DMS although we/they are aware DMS is a dead as far as GW development and support is concerned.
I have played with Vibe and have tried to move a couple of users to Vibe
but its overly complicated to use as several clients put it...

I have a new client with Windows 2003 & about 900Gb data in a very simple but haphazard file system folder structure for which GW DMS would be ideal but I don't think we should suggest it! Largest DMS is less than 200Gb so I'm not sure how DMS would perform anyway!

File Structure is Project based with fairly complex structure (over time this has become haphazard)
At the moment almost everything is available to everyone but going forward need to restrict access to information
on filesystem setup this would be a admin nightmare !

Vibe would allow copies of emails to be stored within a Project structure - which may make the data even larger over time

we are talking about 50 users currently.
Starting with 900Gb I would think we need to allow for 3Tb data

I have to seriously look at the best solution i.e. Vibe, stay with File system or Sharepoint - sorry!

Any advice / pointers - do's and don'ts appreciated.