# Datasets in DataSphere

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After April 20, 2026, you will not be able to create new [datasets](dataset.md). Use [file storages](filestores.md) to store your data. Datasets created before April 20, 2026 will continue to work without any changes.

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A _dataset in DataSphere_ is a way to store information that provides quick access to large amounts of data. Datasets can store up to 4 TB of data, giving faster access to data than to the main project storage.

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The larger the [disk](../../compute/concepts/disk.md) allocated for the dataset, the higher the data read speed.

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A dataset is [created and populated](../operations/data/dataset.md#create) during initialization. Once initialized, you cannot change a dataset, as it becomes read-only. If you want to add files to a dataset, create it once again.

Datasets are not included in the main project storage and are [priced](../pricing.md#prices-datasets) separately.

To use your data in multiple projects, you can [share](../operations/data/dataset.md#share) your datasets within your community, just like any other resources.

When activated in the project, a disk with a dataset is mounted to the project storage. You can read the files of your activated dataset as local files in your project storage at `/home/jupyter/datasets/<dataset_name>`.

You can have up to three active datasets within a project at the same time. You can activate and deactivate datasets in your projects on the go, without having to restart them. For the full list of DataSphere restrictions, see [Quotas and limits in DataSphere](limits.md).

## Information about a dataset as a resource {#info}

For each dataset, the following information is stored:

* Name.
* Status of its connection to the project.
* Name of the user who created the dataset.
* Dataset creation date in [UTC](https://en.wikipedia.org/wiki/Coordinated_Universal_Time) format, e.g., `July 18, 2022, 14:23`.

To view dataset details, click its name in the project's dataset list. On the dataset's **Overview** tab, you can see:

* [Availability zone](../../overview/concepts/geo-scope.md) the dataset is stored in.
* Size.
* Initialization code.

#### See also {#see-also}

* [Working with datasets](../operations/data/dataset.md)