# Frequently Asked Question

## Data Connectors

#### Do you have an IP-range that Data Connectors will send events from?

We currently do not have a set IP-range. A Data Connector request origin can be verified by using Signature Secrets. You can read more about Signature Secrets on the [Advanced Configurations](https://docs.developer.disruptive-technologies.com/data-connectors/advanced-configurations) page.

#### My Data Connector returns errors. What do I do?

* Verify that your Data Connector is configured with the correct Endpoint URL.
* Check your endpoint logs for tracebacks that explain the source of the error.

#### Why did my Data Connector get automatically disabled?

A Data Connector can be automatically disabled if only non-200 responses have been returned for a long time. You can read more about this on the [Advanced Configurations](https://docs.developer.disruptive-technologies.com/data-connectors/advanced-configurations#enable-and-disable) page.

## REST API

#### What is the difference between the Event Stream API and a Data Connector?

[Data Connectors](https://docs.developer.disruptive-technologies.com/data-connectors/introduction-to-data-connector) are best used in backend integrations where a reliable and secure stream of events is desired, like forwarding events to external long-term storage. It comes with quality-of-life features such as an at-least-once Guarantee, low latency, and automatic scaling.

On the other hand, the [REST API Events Stream](https://developer.disruptive-technologies.com/api#/Live%20events%20streaming%20API/get_projects__project__devices_stream) provides a service aimed more at front-end applications and trades some quality-of-life features for flexibility. Granted the right permissions are given, a stream can be set up anywhere but does not come with the same at-least-once guarantee as a Data Connector.

## DT Cloud

#### How long are my sensor data stored?

All Events are stored for 30 days by default. For long-term storage, we recommend either using our managed [Extended Data Storage](https://support.disruptive-technologies.com/hc/en-us/articles/10488019175068-Extended-Data-Storage) or using a Data Connector to forward events to an external database that you manage yourself. You can get started with our [Example Integrations](https://docs.developer.disruptive-technologies.com/data-connectors/example-integrations).