# Notebook FAQ

> Notebook FAQ - Answers questions and provides tips for working with DataRobot Notebooks in
> Workbench.

This Markdown file sits beside the HTML page at the same path (with a `.md` suffix). It summarizes the topic and lists links for tools and LLM context.

Companion generated at `2026-04-24T16:03:56.545692+00:00` (UTC).

## Primary page

- [Notebook FAQ](https://docs.datarobot.com/en/docs/classic-ui/dr-notebooks/notebook-faq-classic.html): Full documentation for this topic (HTML).

## Sections on this page

- [Feature considerations](https://docs.datarobot.com/en/docs/classic-ui/dr-notebooks/notebook-faq-classic.html#feature-considerations): In-page section heading.
- [CPU and memory limits](https://docs.datarobot.com/en/docs/classic-ui/dr-notebooks/notebook-faq-classic.html#cpu-and-memory-limits): In-page section heading.
- [User limits](https://docs.datarobot.com/en/docs/classic-ui/dr-notebooks/notebook-faq-classic.html#user-limits): In-page section heading.
- [Cell limits](https://docs.datarobot.com/en/docs/classic-ui/dr-notebooks/notebook-faq-classic.html#cell-limits): In-page section heading.

## Related documentation

- [Classic UI documentation](https://docs.datarobot.com/en/docs/classic-ui/index.html): Linked from this page.
- [Notebooks](https://docs.datarobot.com/en/docs/classic-ui/dr-notebooks/index.html): Linked from this page.
- [codespace](https://docs.datarobot.com/en/docs/workbench/wb-notebook/codespaces/index.html): Linked from this page.
- [share the entire Use Case](https://docs.datarobot.com/en/docs/workbench/nxt-workbench/usecases/build-usecase.html#share): Linked from this page.

## Documentation content

# Notebook FAQ

## Feature considerations

Review the tables below to learn more about the limitations for DataRobot Notebooks.

### CPU and memory limits

Review the limits below based on the machine size you are using.

| Machine size | CPU limit | Memory limit |
| --- | --- | --- |
| XS | 1 CPU | 4 GB |
| S | 2 CPU | 8 GB |
| M* | 4 CPU | 16 GB |
| L* | 8 CPU | 32 GB |

* M and L machine sizes are available for users depending on their pricing tier (up to M for Enterprise tier users, and up to L for Business Critical tier).

### User limits

You can maintain a maximum of four concurrent active notebook and/or codespace sessions per user in DataRobot. There is also a larger limit for the maximum number of concurrent notebook or codespace sessions that can be running across all users in an organization. If the limit has been reached, you can shut down an existing active session in order to launch another notebook or codespace in a session. Contact your DataRobot representative for more information on the limit for the total number of concurrent sessions that can run in parallel in your organization.

### Cell limits

The table below outlines limits for cell execution time, cell source, and output sizes

| Limit | Value |
| --- | --- |
| Max cell execution time | 24 hours |
| Max cell output size | 10MB |
| Max notebook cells count | 1000 cells |
| Max cell source code size | 2MB |