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SawyerFlag for Saudi Arabia

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Planning Domain/Exchange for 3 offices (HO and 2 branches)

hi
i have 3 offices

already i have some implementation but i want the professional one
i have licenses for window 2003 and exchange 2003

now
i have 3 offices in 3 different cities / 10 user on each branch
these site connected use vpn and internet

now i want the right plan /implementation for my domain controller and exchange
should i use a secondary DC on branches or not
about exchange also should I use another exchange there?

also the exchange and DC must be in a separate machine or i can handle it on only one


thank you
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Lee W, MVP
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It is NOT RECOMMENDED (not a best practice) to run Exchange on a domain controller.  HOWEVER, it IS Supported by Microsoft if you had to.  

What you do at the branches depends on the speed of the connection between the sites.

I would not run any additional Exchange 2003 servers, but I would put in AT LEAST one DC in one of the other offices so that you have redundancy for the active directory.  10 users could probably do without a DC at the site, but if you could swing it, I would put one server in each location.  I would probably also setup DFS for each site so that files are replicated between the locations providing a near-instant off-site backup and making the files available to all users everywhere.  

I'd setup a point-to-point VPN between all sites (just keep in mind, UPLOAD speed is generally just as important as download in point-to-point VPNs).

Exactly what else to do and how to do it and what concerns to have all depend on what your users are doing and what your business does and what apps you run.
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ASKER

ok thank you

for ad domain replications
whats the bw needed between offices
only 10 users in each branch?

if i have 1 MB vpn connection this will be fair??? or i need more
For small networks, the bandwidth requirements are negligible.  You could do replication over dialup... for AD.  (Though I don't recall if some tweaking might be necessary for such slow links)... but with an 8 Mb VPN, you should be fine.

(MB = MegaBYTE)
(Mb = MegaBIT)
8 b = 1 B so if you didn't make a typo - you have an 8 Mbit link... And if you did make a typo, then even a 1 Mbit link is should be fine.  I THINK the default slow link threshold is 512 Kb
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ASKER

ok thank you

actually i have 1 Mb bit

so now i will make the domain controller on the main office / the primary

about the branch which better; i make a secondary DC or a child domain?

can i have a case study of cases like this/// ??
many thanks

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Lee W, MVP
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ASKER

ok thank you
that fair to me i will implement that and i will ask again for any doubts

and actually i was a system admin before 3 years but i forgot many things,,,, i will handle it now again