Business migration experience
1. Use offline migration as much as possible to use offline migration.
2. Windows online migration, focusing on the success rate of block level; focus on efficiency using file level.
3. Linux recommends using file level.
4. File-level migration destination host disk partition size is variable.
5. The more familiar with business software deployment, the more likely it is to reduce RTO time (more synchronization directories can be reduced during data synchronization and file comparison time can be reduced).
6. Hardware-bound business systems should not be migrated.
7. Make a backup before migration.
8. Migration is risky. Because it involves the underlying operating system, not every migration can be successful, ready to fall back.
9. Migration ensures data integrity, and business verification requires business application vendors to support it.
10. Do not demolish the original business system immediately after the service is switched, in case the migration will be retired.
