First find out where the file is saved, and then verify whether it can be retrieved. Cloud storage, service provider snapshots and independent backups held by yourself are different levels.
1 · Draw where the files are
Distinguish between system disk, data disk, application private directory and client cache. Confirm whether the current file belongs to a temporary session or persistent storage, to avoid thinking that it is permanently saved when visible in the interface.
2 · Verify the export with a small file first
Test client transmission, browser download, or officially supported synchronization methods in sequence. Check the file name, size and content to confirm that the exported file is a complete and usable file.
3 · Prepare independent backup and try recovery
Move important files to another location you can control; keep versions if needed. Extract a backup file to restore and open it to avoid being unable to restore despite being prompted for a successful upload.
4 · Allow processing time before migration and expiration
Before migrating, confirm that the target software and version are compatible. Equipment replacement, reset, shutdown and expiration are not the same operations, and are exported according to the official current recycling rules.
comparative judgment
| Following objects | Main differences | Next step to check |
|---|---|---|
| application files | May be in application private directory | Prioritize the application export function |
| Desktop data disk | Separate storage fees may apply | Confirm downtime and expiry retention periods |
| Service provider snapshot | Associated with original account or service | Do not replace independently recoverable backups |