When you restore a backed-up AppleShare volume, all access privileges are
lost and the files and folder are property of the Custodian. The Admin
program creates a new Server folder (Server2) when it reinitializes the
drive for AppleShare.
AppleShare, when determining access privileges, uses the directory IDs to
keep track of separate folders. However, when you backup a hard disk and
then restore it, all of the ID numbers are reassigned. Consequently,
AppleShare can't match up its stored lists of access privileges with what
is on the disk. The only solution is to use an 'image backup' device, usually
a tape backup. This backup device would in essence make a clone of the hard
disk onto a tape, keeping all directory IDs intact, and correctly restoring
them later.
The reason for the creation of the folder named Server2 is that AppleShare
has also lost track of its older Server folder. When you run the Admin
program, it looks for the server volume based on its directory ID. Because
the IDs have changed, the Admin program can't find the server folder and
notices that there is a folder on the desktop with the name Server.
Thinking that the folder belongs to someone other than itself, the Admin
program creates a new name (Server2) and uses that. When this happens,
you can use the old 'Users & Groups' file to create a new one, and throw
out the old Server folder.