Hi, I need some help in my new design and check the new network topology. Here is my current topology: 1- I have a head quarter in Jordan ( 2 AD 2008 , 2 Exchange 2007 clustered, 2 HUB/CAS , 2 ISA server NLB ) and about 30 branches , 10 users in each branch. 2- All users in HQ1 ( 250 users ) and users in the 30 branches are domain users and connected to AD and exchange and ISA in head quarter. 3- There are no servers in branches. 4- This setup is running perfectly without any problems. Future Setup: 1- In another country I have 1 HQ2 and 5 branches each branch consist of 10 users 2- HQ in Jordan is connected to HQ2 in another country by leased line 1 Mbps. 3- All 5 branches are connected to HQ2 in that country through leased lines. 4- All users are in workgroup environment. 5- I need all users to be connected to the same domain and exchange servers and Antivirus server in Jordan. 6- I put a design which is to put 2 RODC 2008 and 1 Exchange 2007 and 1 ISA 2006 and 1 Antivirus server in HQ2 in that country and all users in are connected to servers in HQ2. 7- Servers in HQ2 are connected to servers in HQ1. What you think about this design, is it recommended or I can connect all user to my domain directly without using additional RODC , Exchange , ISA and Antivirus servers. Is it enough and will give the performance I need (Authentication, Applying policies, Mail flow , Internet browsing and Antivirus updates)? Regards Nasir

A more simple solution would be if the users connected to HQ2 use the leased line and connect to Exchange already in place at HQ. Exchange will not use the RODC,you will need to have regular DC/GC in HQ2 site if its setup as own AD-site. lasse at humandata dot se, http://anewmessagehasarrived.blogspot.com

Agree with Lasse on this one. Keep Exchange at HQ1 in Jordan, then you keep a lower maintenance and easiere user administration. Since you have a nice setup you are in pretty good shape and just need to embrace the users from the other country. /Martin Exchange is a passion not just a collaboration software.

The references below will help to validate the client experience for HQ2 if you are planning to keep the exchange system in HQ1 “RPC averaged latency should be under 50ms on average and RPC requests should be below 30 at all times. Disk latency should be under 10ms for log writes, and less than 20ms for database reads and writes” ---------Refer to <Configuring, validating and monitoring your Exchange 2007 storage > Resources: Exchange 2007 Storage Validation Page 45 on Storage Sizing and Testing for Microsoft Exchange Server 2007 James Luo TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.