How to logon when local server is unavailable?

[Guest chris.wilkins10@virgin.net]

Hi All,

I'm setting up a Domain controller and file server for our three

branch offices connected by a VPN. Each office will have one of each

in each office.

Number of users in the office are 35, 22 and 6.

The aim is to have a pair of servers (DC and File server) in each

office to act as backup for the others if a local DC becomes

unavailable. There is one domain ie. 'mydomainname.local'. I was

planning to place the DNS server on the same PC as the DC.

 

My question is. If one of the office the Domain controller (with DNS

server installed) fails. What is the best set up to allow users in

that office to still logon to one of the two remaining DC's in the

other remote offices?

 

Does anyone have a similar setup?

 

Any help much appricated

Chris....S.London