- Can 2 admins edit the same node content at the same time from different computers?
- Can 2 admins edit different node contents at the same time from different computers?
- Can 2 admins edit a Drupal site at the same time from different computers?
Using Drupal core, two users editing the same node concurrently would cause a conflict; the second user would get an error ("This content has been modified by another user, changes cannot be saved."). This would only happen on
node_save(), once they have submitted the form. A more user friendly option would be to use a module like the Content lock module which highlights an active edit of a node and locks it for others.
Any number of editors are supported on a site simultaneously; the only limitation is editing the same node (and server resources).