Our Active Directory controller is currently running Windows Server 2003 SP2. It's on a machine with a Pentium IV processor running at 3.0 GHz and 1 GB of memory. We have about 45 actual users, and expect to be migrating about 45 more over from another network system.
The 45 new users are used to having access to the entire state-wide Global Address List to find the phone numbers, mailing addresses, etc. of both state and city employees. We're able to get a dump of the state's directory with all the information we want, so I was thinking we could just add an OU to our directory and recreate a subset of the state's GAL as contacts. The only problem is that this subset is still about 13,000 entries long.
I was just wondering what sort of impact this would have on our Active Directory, our domain controller, and our users' general experience. I have no problem writing code to do the initial dump into the directory, and then to do subsequent comparisons (updates, inserts and removals) on a periodic basis, but I don't want everything to blow up because of some practical limit that I don't know about.