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Configuring Xchange - Multiple Locations

By jefffox ·
The organisation I work for is currently planning to role out Exchange 2000. We have 8 buildings spread across the United Kingdom, 2 meg links between. Should we set up as a single site (easier admin), multiple sites (less traffic)? According to Microsoft, with bigger than .5 meg, we should go for a single site, but we are not sure. Can anyone give a definitive reply, or point me towards one - quite urgent.
Thanks
Jeff Fox
IT Service Manager
Highways Agency

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Configuring Xchange - Multiple Locations

by NetWill In reply to Configuring Xchange - Mul ...

are most to email traffic within a site? If the answer is yes, I would go with multi-sites.

Otherwise, go with single site and minimize traffic between servers as much as possible.

With now everyone doing Internet email, also consider on how are you going to get the emails out to the NET as fast as possible, minimize routing.

Check out books on Microsoft Exchange. It has case studies similiar to your situation.

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Configuring Xchange - Multiple Locations

by jefffox In reply to Configuring Xchange - Mul ...

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Configuring Xchange - Multiple Locations

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Configuring Xchange - Multiple Locations

by tony.colgrove In reply to Configuring Xchange - Mul ...

In Exchange2000, MS has removed the SITE concept. You now have administrative groups and routing groups. Routing Groups are the replacement for sites. An administrative group can span one, multiple, or all routing groups, removing the "easier admin" caused by single site.
Exchange2000 does require being in native mode to allow for a single administrative group and multiple routing groups or vise versa. In Mixed mode, admin and routing groups are bound together and function as a Ex5.5 Site.
It would be good to map your routing groups to match your network topology (ie. hub and spoke, or Mesh).
Also consider your Win2K and AD implementation. Only one Ex2000 org can exist in an entire AD forest. Also when extending the schema for Ex2K, you will have alot of replication happening between your Win2k AD servers. You will also want to think about global catalog (GC)placement, as Outlook gets the address list from a GC now and not Exchange.

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Configuring Xchange - Multiple Locations

by jefffox In reply to Configuring Xchange - Mul ...

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Configuring Xchange - Multiple Locations

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Configuring Xchange - Multiple Locations

by NetTek In reply to Configuring Xchange - Mul ...

I would definitely minimize the number of Exchange servers. With todays hardware, a single server can handle much more mail traffic than just a few years ago. Additionally, the less Exchange servers you have, the less administration, less number ofExchange servers that can suffer hardware or software failure, and less WAN traffic due to replication and synchronization. Additionally, Exchange 2000 can handle more than three times as many mailboxes as version 5.5.

I would go with 2 servers.Exchange 2000 has clustering capability. If you set it up that way, when one server goes down the other server takes on its responsibilities. The more Exchange servers you have, the longer the failover process takes. With only two servers, the failover would be virtually transparent to your users.

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Configuring Xchange - Multiple Locations

by jefffox In reply to Configuring Xchange - Mul ...

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