* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Run migrations on a duplicated shard and note down execution times, strange behavior or exceptional errors
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Inform about all larger changes in the release notes Begin of the insertion

**Results**

* Tested migrations and measures on bim-trials1, trials1, trials3, vips1 to 3.
* **max time: 5 minutes => suggested downtime: 15 minutes**End of the insertion