If you are using Veeam ONE with MS SQL Express you probably either have a small environment or you just didn’t hit the 10 GB database limitation yet But, how much space will the database then consume?
![](https://uploads-eu-west-1.insided.com/veeam-en/attachment/a751c134-a584-40db-ac40-6f2b9757e4db.jpg)
The good news is Veeam offers a Veeam ONE database calculator tool right here: https://www.veeam.com/kb2246
It is actually a Excel spreadsheet, but is very easy to use:
![](https://uploads-eu-west-1.insided.com/veeam-en/attachment/3e27ce96-c3e5-4fda-9612-a973cd542585.png)
But wait! Don’t forget to select the correct data collection mode you plan to use at the bottom:
![](https://uploads-eu-west-1.insided.com/veeam-en/attachment/134651e1-a963-4d12-8b4c-606d0526d62a.jpg)
![](https://uploads-eu-west-1.insided.com/veeam-en/attachment/312aa93f-dc09-4fe5-9a61-1bcc1412df8e.png)
In case you are wondering what this is, check out the user guide: https://helpcenter.veeam.com/docs/one/deployment/typical_choose_collection_mode.html?ver=100 and the table from https://helpcenter.veeam.com/docs/one/deployment/data_collection_modes.html?ver=100 (partial screenshot):
![](https://uploads-eu-west-1.insided.com/veeam-en/attachment/0bf6b8e7-b8f6-4eed-a106-9d8878d12602.png)