We have multiple sites across UK running AD and Exchange 2010 in the One Organization with coexistence of couple of Exchange 2003 hosting Free/Busy in HQ.
Each site has cluster of Mailbox servers, CAS and HUB servers.
Since the Free/Busy was located only at HQ I recently created a Public Folder Database at one of the branch offices and added it in the replica list of Free/Busy. Since this the users in branche office are able to access Free/Busy without any lag where as previous it use to take few seconds before Free/Busy was retrieved.
My question is what happens if the link break between the two sites? Will Free/Busy still continue to work for both sites? By the way the users in branch office do not require to see Free/Busy of users in HQ. Users in branch office only need to be able to see Free/Busy of users in that branch because each branch run there own operation and have separate email domain also the MX feed plus segmented GAL.
All users use Outlook 2007, 2010 no 2003
Please advise whether Free/Busy will continue to work at both sites in the event of loss of link??