Getting Started with the Datto Linux Agent


This article describes the system requirements for the Datto Linux Agent.


  • Datto Linux Agent


System requirements


Support for Linux is limited to 64-bit operating systems only. See our full list of supported Linux distributions.

Supported file systems

The Datto Linux Agent supports ext2, ext3, ext4, *xfs, FAT32, and NTFS filesystems.

*BMR is not supported for XFS file systems.

Supported kernel versions

Linux kernel version 2.6.18 to 5.15, excluding the incompatible kernel versions, 3.13.0-65.

The protected Linux system requires a corresponding kernel development package.

CPU and Memory requirements

  • At least 1 GB of RAM must remain free during normal operations of the production machine for install and backups to run.
  • Datto recommends a minimum of 2 CPU cores for the backup agent, depending on workloads. If the agent is experiencing high CPU usage during backups with fewer than 2 CPUs, the production machine may require additional resources.

Disk space requirements

Each protected volume must have 10% of its space free (up to 10 GB).


At a minimum, the protected machine must have internet access, and be able to resolve the following addresses for the initial installation and on-going operation of the Datto Linux Agent:

TCP ports 25567, 3260, and 3262 must be open between the Datto appliance and the protected system. To check port connectivity, see the Testing port connectivity section of this article.

See the Unified Backup Networking and Bandwidth Requirements article for full detailed networking requirements.


The Datto Linux Agent supports the versions of Linux listed in the Supported Linux distributions section of the article.

OS-specific requirements

In addition to the requirements listed above, the following distributions of Linux carry additional system requirements:

  • Debian-based systems require a kernel-headers package to match the running kernel.
  • SUSE-based systems need kernel-syms
  • RPM-based systems require a kernel-devel package to match the running kernel.
  • RHEL, CentOS and Fedora require the dracut binary to be located on the root volume of the protected machine (this is typically the default).

IMPORTANT  While systems that don't meet the above specifications may function, they can exhibit unexpected behaviors and process failures outside of Datto's control


For the latest Linux Agent version information, see Datto Linux Agent (DLA): Release Notes. You can check the protected machine's agent version from the Protect tab of the Datto appliance's GUI.


Supported Linux distributions


The compatibility of this backup solution with any hypervisor environment or operating system that Datto does not list as supported is untested and may yield unreliable results. Universal VM Backup may be a viable alternative for backing up virtual machines with operating systems that are not listed as compatible.

  • If you are using BFQ I/O scheduling(external link) on the protected machine, disable it before performing backups to prevent kernel crashes.
  • The Datto Device does not currently support HIR for Linux EFI. Due to this limitation, Datto does not support screenshots, image exports, rescue agents, bare-metal restore operations and local/hybrid virtualizations for EFI Linux agents.
  • The Datto Solution expects protected volumes to be partitioned with an MBR or GPT partition table. Backups of volumes formatted with a filesystem on the raw block device are untested and may produce undesirable results.
  • Datto does not currently support virtualization of systems that require hypervisor pre-configuration (either via ignition or cloud-init)
  • The Datto Linux Agent does not support Linux systems that have their bootloader on a GPT disk.
  • VMware vCenter Server is unsupported.
  • The Datto solution can back up multiple types of disk sector schemes. The process writes an image-based backup to a file, which is 512 bytes per physical sector. While rare, some software that relies on advanced formats (such as 4K) may have issues with the sector size change. Datto recommends performing regular DR tests to ensure that all required applications function as expected in our virtualized environments.
  • Datto does not support virtualizing disk images stored in Network Attached Storage volumes for any distribution.
  • The Datto Linux Agent is unable to back up Docker containers. However, it can back up the host and container data.
  • The Datto Linux Agent does not preserve LVM configuration metadata.
  • Backups do not work correctly if the server has LVM snapshots present.
  • UEFI Secure Boot with module validation is incompatible with, and will prevent the Datto Linux Agent from installing and running. You can disable module validation or sign the module yourself. See the Ubuntu WIKI for more information. (external link).
  • On systems running kernel 4.17 or greater, a reboot may result in a differential merge backup.

Testing port connectivity

To test port connectivity, run the following command on the protected system:

nc -v <ip address of Datto appliance> <port number>

A successful connection will look like this:

[root@msmith-centos7 ~]# nc -v 3260
Ncat: Version 6.40 ( )
Ncat: Connected to

On Ubuntu/Debian:

michael@MSmith-LinuxPC ~ $ nc -zv 3260
Connection to 3260 port [tcp/iscsi-target] succeeded!

Port 25567 will be open on the protected machine, not on the Datto device. This test will fail if you try and run it to port 25567 from the protected machine to the Datto device.


See Installing and Updating the Datto Linux Agent for information about updating the Datto Linux Agent.

Frequently asked questions

What part of the Linux agent did Datto make open-source?

Datto made three components of the agent open-source: the driver, a library for the agent to interact with the driver, and several utilities, the most important of which is a tool to compare incremental backups.

Why did Datto use open-source?
Making these components open-source allows for community involvement., which means support for more Linux distros, with faster maintenance and improvements.

How does the licensing work?
Datto offers the Linux agent with unlimited licenses. You can back up as many Linux agents to your Datto device as you wish. ALTO 2 and 3 series devices are limited to 2 or 4 licenses depending on the model, regardless of agent software. First-generation ALTO devices do not support Linux agents.

Can I encrypt Linux agents?
Yes. You can encrypt Linux agents.

Can I protect a mix of Linux agents and Windows agents on the same Datto appliance?
Yes. You can have different agent types on the same Datto device.

Do protected Linux machines get the same restore options as Windows machines?
Yes, however, Rapid Rollback is not currently available for Linux machines.

Do local or cloud virtualization work any differently for Linux machines?
Virtualization works the same for Linux agents as it does for Windows agents.

Additional Resources