ALERT: Datto Drive Cloud service will no longer be available as of June 1, 2019. To migrate to Datto Workplace, contact your Sales Executive. To learn how to download your Datto Drive cloud data, please visit this article.

Connecting a SIRIS to a VMware Hypervisor



This article explains how to connect a SIRIS to a VMware hypervisor.


  • Datto SIRIS


These instructions apply to virtual and physical SIRIS appliances to enable agentless backups, ESXi Virtualizations, and ESXi uploads. For Hyper-V instructions, see Connecting A SIRIS To A Hyper-V Hypervisor / Virtualization Offload To A Hyper-V Host.

System Requirements

Datto SIRIS supports hypervisor connections to the following paid versions of VMware vSphere:

  • VMware vSphere 5.5
  • VMware vSphere 6.0
  • VMware vSphere 6.5
  • VMware vSphere 6.7


To back up a virtual machine hosted on VMware vSphere, you must set up a connection to the hypervisor. This connection enables automatic screenshots and virtualization.

To create a hypervisor connection, access the GUI of your Datto appliance. Then, click Configure  → Hypervisor Connections → Add Connection button, as shown in Figure 1.

Figure 1: Add Hypervisor Connections

Add a Connection Name and Server Address, as shown in Figure 2. Hypervisor Type currently will default to ESXi.

Always enter the highest-level connection for the Server Address; the Datto will autodetect your ESXi environment. Use the IP address of the vCenter server that manages the host.

If you are using a clustered environment, use the IP/FQDN for either the vSphere Client or the web client.
Figure 2: Hypervisor Connection Name

Fill in the fields for the Hypervisor Login, as shown in Figure 3.

Figure 3: Hypervisor Login

Next, specify your ESX Hypervisor Options.

  • If you are connecting to a vCenter Managed environment, you will be prompted for a Data CenterClusterHost AddressOffload MethodDatastore, and Network Adapter, as shown in Figure 4.
  • If you are connecting to a standalone environment, you will be prompted for an Offload MethodDatastore, and Network Adapter.
Your Datto appliance will only display the Cluster and Datastore fields if they are applicable to the type of connection you are configuring.

Figure 4: ESX Hypervisor Options (vCenter Managed configuration shown)

When adding a Datastore, specify a location to store the virtual machine during ESXi virtualization and screenshot verification. This can be a different datastore than where the virtual SIRIS appliance virtual machine is located. The datastore should have enough space to hold the .vswap file for each ESXi virtualization. Each .vswap file is equal to the amount of memory allocated to the virtual machine.

When configuring a Network Adapter, specify the NIC on the SIRIS appliance that is attached to the same subnet as the iSCSI adapter on the ESXi host. This is the NIC that the iSCSI traffic will travel over.

The iSCSI adapter on the ESXi host is used for ESXi virtualization. The adapter should be on the same subnet as one of the NICs on the SIRIS appliance in order for proper iSCSI connection and RDM creation. If a software iSCSI adapter is used, then it should be bound to a VMkernel adapter on the same subnet as one of the NICs on the SIRIS appliance.

If you don't already have an iSCSI adapter set up on your ESXi host, see this document (external link - page 69).

Once you click Next, the Datto appliance will connect to the hypervisor and display your connections, as shown in Figure 5.

Figure 5: Successful connection

You can now add pair VMs for backup using the System Backup Wizard.

Updating Connection Credentials

If you need to update the hypervisor credentials for an existing connection, delete the old connection, and then replace it using the original connection name and the new credentials. You will not lose data.

Was this article helpful?

4 out of 8 found this helpful

You must sign in before voting on this article.

Want to talk about it? Have a feature request?

Head on over to our Community Forum or get live help.