# Create shared storage service for Ruby


Zerops provides [shared storage service](/shared-storage/overview) that can be connected to runtime services. Shared storage enables your Ruby service to share files between all containers of the same service or even among containers of different runtime services.

## Connect shared storage in Zerops GUI

### When creating new shared storage

Connect your Ruby service directly when creating a new shared storage service. Select your Ruby service in the **Share with Services** block on the **Add new shared storage service** page.

### Connect existing shared storage

To connect existing shared storage to your Ruby service:

1. Go to the shared storage service detail page
2. Select **Shared storage connections**
3. Choose your Ruby service from the list of runtime services
4. The shared storage will be connected to your service

### How it works

Zerops creates a new folder `/mnt/[shared storage name]` in your Ruby service's root directory. For example, `/mnt/teststorage` for a `teststorage` shared storage.

The content of this folder is shared among:
- All containers of your Ruby service
- All containers of other connected runtime services (if you connect multiple services)

## Disconnect shared storage

To disconnect shared storage from your Ruby service:

1. Go to the shared storage service detail page
2. Select **Shared storage connections**
3. Switch off the toggle next to your Ruby service

## Create Ruby service with shared storage using zCLI

zCLI is the Zerops command-line tool. To create a new Ruby service with shared storage via command-line:

1. [Install & setup zCLI](/references/cli)
2. [Create a project description file](#create-project-description-file)
3. [Create the project](#create-project-with-shared-storage)

### Create project description file

Zerops uses YAML format to describe project infrastructure. [Read the basics](/ruby/how-to/create#create-a-project-description-file) about defining Ruby services in `description.yaml`.

#### Example with shared storage

Create a directory `my-project` and add a `description.yaml` file:

The `mount` attribute accepts an array of shared storage names to mount to your Ruby service.

### Create project with shared storage

Follow the guide [how to create a project based on description.yaml](/ruby/how-to/create#create-a-project-based-on-the-descriptionyaml) to deploy your Ruby service with shared storage.