questions about design for 100 users



I'm designing an exchange implementation for 100 mailboxes, but
I'm hoping this will scale to at least 200 in the next couple of years. Most
users will use cached exchange mode with outlook 2003. I also have several
users with phones, I'm trying to get us to use windows mobile 5 devices, but
we may need another server with BES.

What I'm think now is one domain controller and a server running exchange
enterprise server. Should I push for a second domain controller for
redundancy?
The exchange server will have dual xeon processors, 4gigs of ram and the
system files/log files/database files will
be split up onto disks in raid1/raid1/raid5 or raid10 configurations. That
would be a total of 7 or 8 disks. Mailboxes will be about 250 megs. I
believe four 75 gig hard drives in raid 10 could handle 200 mailboxes. Any
recomendations, if I wanted this to scale to something like 300 mailboxes?

We are looking at a VPN solution. I'm not sure OWA will be available from
the internet and no rpc over http. Would a front end server thus not really
be needed?

Would tape be the best back up solution for us? Any good recomendations for
antivirus software and is that going to bog down the exchange server too
much? Maybe that could go on a frontend server?


.



Relevant Pages

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