The Fat Bloke Sings: Thoughts from a Fat Bloke

Lots of people use SGD with Directory Servers and it's easy to setup.
In the Array Manager simply enable the LDAP login authority and point SGD at the Directory Server.
Here's an example:

Now out of the box the LDAP login authority is very thorough in checking the supplied username against all of these searchAttributes:
{ cn, uid, mail, userPrincipalName, sAMAccountName }

And so for large directories this may take some time and lead to a slow login process.

So here's a tip:
Trim the list of search attributes down to say { cn, mail }.
The command to do this is:

/opt/tarantella/bin/tarantella config edit --searchldapla.properties-searchAttributes cn mail

Hopefully you'll see that this makes searches much faster and consequently the login process too.

-FB