As noted in the Migration Guide: Upgrading from DBSync V1 to V3, a complete backup of the original data is created during the migration, allowing for restoration if needed.
200 GB of disk space is allocated for the migration to store the old database backup and update it with the new DBSync v3 threat intelligence.
Following the successful upgrade from DBSync V1 to V3, it is typically recommended to retain the dbsync_backup schema for approximately six months. This timeframe provides sufficient opportunity to identify any potential discrepancies.
If space is a concern, transferring the backups to cold storage can help free up space in the Xray database.
Once six months have elapsed and confidence is established that there is no missing information, it is acceptable to drop the dbsync_backup schema using the command below:
DROP SCHEMA dbsync_backup CASCADE;
If the data is no longer needed, the dbsync_backup schema is safe to drop as Xray does not read from the dbsync_backup schema.