There are several migration methods for cross-forest migration of file servers depending on the environment:
1. After creating the forest trust, migrate the file server through ADMT
2. If the conditions allow, the file server can be directly withdrawn from the domain and added to the domain. The premise of this method is that the users and groups in AD have been migrated through ADMT.
The following are the migration or upgrade methods for intra-domain file servers:
1. Migrate via DFS replication group method
advantage:
User usage is not affected during migration,
No diff file migration is required,
The progress and integrity of file migration can be verified through DFS reports,
Suitable for environments where there is no requirement for the time required to complete the migration, but end-users are not affected during the migration.
shortcoming:
The migration cycle is long,
Errors or replication stops are more likely to occur during migration,
It is not recommended for customers with large differences in upgraded system versions or large file server data
2. Fastcopy or Xcopy migration
advantage:
Migrate with permission and after the migration is completed, you can perform differential data migration.
It is suitable for the migration of the environment with large differences in the upgrade version of the Windows system.
User usage is not affected during migration.
shortcoming:
Some downtime is required for differential data migration.
After the migration is complete, you need to reset the sharing permissions
3. FSMT tool migration
advantage:
Support DFS permission and share permission migration,
Differential file migration is possible
shortcoming:
The operation is more complicated
4. Directly reinstall the operating system ( it is recommended to test first according to the system version )
advantage:
easy to use,
DFS permissions are not lost,
shortcoming:
You need to reset sharing permissions.
The file server data cannot be stored in the system disk.
It is recommended to make a backup of the whole machine when upgrading and migrating.