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Timeline: Aventis' Exchange Server 2000 Global Migration

By Robert L.Mitchell

April 7, 2003 12:00 PM ET

Computerworld - Fall 1999
Hoechst Marion Roussel Inc. and Rhone-Poulenc SA merge; Aventis formed.
Combined companies had:

55,000 users in 50 countries.

Nine e-mail systems running on 181 Exchange 5.5 servers (40 routing servers).

One GroupWise e-mail server.

A Windows NT backbone with 11 account domains, 150 resource domains, two Domain Name System servers and two Windows Internet Naming Service servers.

A 22-server test lab constructed by the messaging group replicating six real-world domains; Windows 2000 and Exchange 2000 testing begins.

February/March 2000

Active Directory infrastructure established through in-place upgrades of domain controllers to Windows 2000.

April 2000

Last account domains migrated to Active Directory.

Backbone upgraded to Windows 2000.

Exchange Server 2000 migration began at Frankfurt and Kansas City, Mo., pilot sites.

Exchange Conferencing Server set up in Frankfurt in pilot.

Backbone routers reconfigured to support multicast.

May 2000

Active Directory Connectors installed and connection agreements started to be established with Exchange 5.5 servers at each location.

Kansas City pilot site went live with first Exchange 2000 deployment; 4,000 mailboxes on 11 servers consolidated to four Exchange 2000 servers.

January 2001

WAN routers began to be reconfigured to support multicast for videoconferencing.

April 2001

Outlook Web Access servers rolled out in Frankfurt.

November 2001

Tokyo cut over 3,500 mailboxes.

First quarter 2002

All WAN routers reconfigured for multicast.

SecurID authentication added for Outlook Web Access users.

Frankfurt cut over 8,000 mailboxes.

Conferencing server rollout completed; all routers enabled for multicast.

May 2002

Croix de Berny, France, the largest site, cut over 13,000 mailboxes.

December 2002

U.S. headquarters in Bridgewater, N.J., migrated 6,000 mailboxes to Exchange 2000.

Spring 2003

When the last sites cut over, Aventis will have consolidated to 179 Exchange Servers (139 user servers and 40 connector servers), despite adding 40 new sites. It will have a single account domain, pharma.aventis.com, and approximately 130 domain controllers worldwide.

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