# Updates for the Immutable Database

> The article goes into detail about how TagoIO has updated immutable buckets.

![Updates for the Immutable Database](https://tago.io/og/blog/updated-parameters-immutable-devices.png)

**Devices using immutable buckets now request the period and retention parameters**

Starting today, devices created using the Immutable database will need to receive parameters related to the configuration of the data retention. The **Period** and **Retention** parameters are available in the interface presented during the device creation, and through the API’s.

![Immutable bucket options](./images/updated-parameters-immutable-devices/5fAGlOhddm7Sl0FoN7cMBnDiGeA.png)

### **PERIOD**

For the **period** parameter, you can select one of these options: daily, weekly, monthly, or quarterly (3 months). This will determine the ‘chunks’ used for our data retention process. It is important to note that each chunk is limited to 1 Million registers and it cannot be edited after the device is created – have in mind this when picking an option.

### **RETENTION**

For the **retention** parameter, you can select a value from a range of values that will determine the total duration of your data retention. You can edit this parameter later at any moment.

Learn more about how the data retention works in our [documentation](https://help.tago.io/portal/en/kb/articles/52-data-retention-feature).

## Need Help?

Our team has developed a migration tool to support customers during the transition, if needed. If you have a bucket and want to migrate ASAP, please open a [ticket](https://help.tago.io/portal/en/newticket) and we can schedule this migration for you, for free (only for customers with a Starter or Scale).

Also, you can always check for relevant articles in our [community](https://help.tago.io/portal/en/community/tagoio).

TagoIO Team

[llms.txt](https://tago.io/llms.txt)