Before migrating from NetWare to Windows 2000, certain choices must be evaluated, among them:
· Deciding on a gradual migration or a direct migration path from NetWare to Windows 2000.
· Deciding on an automated or manual migration from NetWare to Windows 2000.
When migrating from a NetWare environment to Windows 2000 and the Active Directory service, there are two basic approaches: gradual migration and direct migration.
Gradual migration assumes that both directory services will coexist for an extended period of time. Direct migration assumes quick migration of all NetWare services to Windows 2000. Both migration paths are discussed later in this document in “NetWare to Windows 2000 Migration”. From a business perspective, the difference between a quick and a slow migration must be evaluated according to the impact each might have on an organization. The cost and the risk associated with the two types of migration must be considered, and correlatively, the network management structure evaluated. The cost of the slower migration tends to be higher because the work is carried out over a longer period of time and requires multiple support and management resources expressly associated with an infrastructure that is complex and supplied by multiple vendors. However, the risk is lower because rollback can be done easily and problems can be resolved during the migration project with little impact on the production system.
In contrast, the quick migration has a lower cost but the risk is higher. The cost is lower in terms of both the amount of time needed to make the switch and the lower support impact on the system. However, the risk is higher because any problems that arise can create greater disruption in the production system.
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