---
title: "How to backfill data"
slug: "how-to-backfill-data"
description: "Learn how to backfill data in data warehouse destinations and make sure that your historical data is also securely stored."
updated: 2025-09-01T11:04:17Z
published: 2025-09-01T11:04:17Z
canonical: "docs.supermetrics.com/how-to-backfill-data"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.supermetrics.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to backfill data

Once you’ve set up a data destination and transfer, use a data backfill to add historical data to your destination.

This guide applies to all data warehouse destinations except BigQuery (marketplace). See our separate guide for [backfilling data to BigQuery (marketplace)](/v1/docs/how-to-backfill-data-in-bigquery-marketplace).

## Before you begin

Before you can backfill data, you need to have created a [destination](/v1/docs/how-to-connect-to-a-data-warehouse-destination) and [data transfer](/v1/docs/how-to-create-a-transfer) on the Supermetrics Hub.

## Instructions

1. On the [Supermetrics Hub](https://hub.supermetrics.com/), go to **Data transfers** under **Manage**.
2. For the transfer you want to backfill data for, click **Backfill**. To change the backfill configuration, click the 3-dot icon and select **Configure backfill**.
3. Set the start and end dates for the historical data you want to backfill and click **OK**.

## Limitations

- Different data sources have [varying data retention policies](/v1/docs/supermetrics-data-source-historical-range-limits-known-api-delays-and-refresh-window-recommendations), so you may only be able to fetch data from their maximum time range of historical data
- Trial subscriptions can only backfill up to 14 days.

## More resources

- [How to monitor your data transfers](/v1/docs/how-to-monitor-your-bigquery-marketplace-data-transfers)