# Synchronize a Synology NAS

{{< recipes-disclaimer >}}

The Synology NAS is a very user-friendly storage system for private persons and small to medium businesses.
It comes with a large number of applications and can synchronize with an Amazon S3-compatible storage, like
Exoscale Simple Object Storage. This guide shows how to set synchronization with Exoscale SOS with the Cloud Sync application.

> [!NOTE]
This method synchronizes the Synology NAS with Exoscale SOS. It does not create a versioned backup. 
If you want to create a versioned backup, see the Hyper Backup guide.

## Prerequisites

Before you start this guide, you will need to:

- Create a SOS Bucket, either via the [Portal](https://portal.exoscale.com/) or
the [CLI]({{< ref "/tools/command-line-interface/" >}}).
See the [Simple Object Storage documentation]({{< ref "/product/storage/object-storage/quick-start/" >}})
for more information.

- Create an IAM key, also via the Portal or the CLI. See the
[IAM documentation]({{< ref "/product/security/iam/quick-start/" >}})
for more information.

## Install Cloud Sync

Open the **Package Center**.

![](synology-sync-step1.png "Package Center Icon")

Search for **Hyper Backup (produced by Synology Inc.)** and install it.

![](synology-sync-step2.png "Cloud Sync package")

## Set up Cloud Sync

Open the main menu and start Cloud Sync. Then follow the screenshots below.

When asked for account settings, select **Customer Server URL** and enter
`sos-ZONE.exo.io` in the server field. Make sure to substitute
`ZONE` with the relevant zone.

> [!NOTE]
You can find all Zones on [our website](https://www.exoscale.com/datacenters/) and 
with the cli: `exo zones list`

Also enter your IAM Key, secret and bucket name.

![](synology-sync-step3.png "Main Overview")

![](synology-sync-step4.png "Click on +")

![](synology-sync-step5.png "Select S3 storage")

![](synology-sync-step6.png "Account setting")

![](synology-sync-step7.png "Select the folder that you want to synchronize")