SIRIS, ALTO, and NAS: Setting Up A New Datto Appliance



This article describes the process to deploy and configure a new physical Datto appliance. For SIRIS Virtual, see Getting Started with SIRIS Virtual.

For preventative measures and maintenance best practices for Datto appliances, see the Datto Device Care & Maintenance Guide.


  • Datto SIRIS
  • Datto ALTO
  • Datto NAS


Before beginning your installation, review the following prerequisites.

  • If you are installing a Datto appliance at a new location, make sure that the host network meets the Datto Networking Requirements.
  • The first backup for a protected system can be very large. If you are pairing protected systems with your Datto appliance for the first time, and are not performing a Device Migration, you should consider ordering a RoundTrip drive. Many times, host networks do not have enough throughput to replicate initial backups to the Datto cloud promptly.
  • When setting up a new Datto appliance, you need the power cable and an Ethernet cable. While not required, Datto also recommends having a monitor, mouse, and keyboard ready to plug into the appliance in case you have trouble registering it over the LAN.
The Datto Solution requires a physical or virtual Datto device to back up directly to the cloud.
Datto appliances require Internet access to perform their first backup.

Initial Appliance Setup

SIRIS 3 Enterprise devices ship with their array drives removed. The array drives are in a separate box. Before powering on the device, install the array drives. See SIRIS 3 / NAS 3 Enterprise Features & Specifications for further information. SIRIS 4 devices are shipped with array drives installed.

1. Plug the appliance into a power outlet. Datto also recommends connecting the backup appliance to a battery backup (also known as an 'Uninterruptible Power Supply' or 'UPS') to ensure consistent operation during low voltage and brownout conditions.

2. Connect the appliance to your LAN. Depending on the type of device, there can be two or more wired network interface card (NIC) connections located on the back of the device. You can use any of the NICs, but you cannot hot-swap them. If you need to change to a different NIC port, you can reboot the device to apply the changes.  You can also select DHCP or Static, assign the IP address, move the cable and reload networking. 

Datto also strongly recommends enabling IPMI on appliances which include this feature and configuring the IPMI port with a static IPv4 address. Doing so will allow you to access the device remotely for troubleshooting if necessary. See this article for more information about configuring IPMI.

The following steps assume that DHCP service is enabled on your network. If not, you will need to connect a keyboard, monitor, and mouse directly to the device to assign a static IP address to the main interface before it can be seen on the network or

3. Turn on the power to the appliance.

For smaller devices, boot time should not take longer than five minutes. For larger devices, such as ALTO XL 6000 and up, as well as Datto NAS 6000 and up, a cold boot may take more than five minutes. This is normal functionality. If your device does not finish booting within ten minutes, contact Datto Technical Support for assistance.

4. From another computer on the same LAN as the Datto appliance, open a browser, and go to

If you only have one Datto appliance on this LAN, this URL will bring you to the web interface for that Datto. If you have more than one Datto appliance on this LAN, you will see a list of devices.

Unregistered devices are listed as backupDevice. Click on its IP address to connect to it.

After you connect to the Datto appliance, it will download and apply device updates. If any updates fail to install, contact Datto Technical Support for assistance.

Next Steps

1. Register the Device

Once the updating process completes, your browser will redirect you to a Device Registration screen. Follow the Registering a Datto Appliance article to get started.

2. Add Protected Systems 

After registering the Datto appliance, follow the Protect A System Wizard article to pair protected machines for backup to the Datto appliance.

3. Configure Offsite Synchronization (Optional)

If you need to regulate a Datto device's bandwidth when syncing with the cloud, consult the Off-Site Synchronization Configuration guide to learn how to calculate daily synchronization transfer amounts and set bandwidth throttles.

4. Joining the Datto Appliance to a Domain (Optional)

Datto appliances work best when they are not domain-joined. However, if your environment requires it, you can join the device to your domain from the Network Settings page of the appliance GUI.

Additional Resources

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