4 impressive usages of Auxiliary NICs on Datto SIRIS devices

by Oct 12, 2012Business Continuity

This article will explore the usages of auxiliary NICs on Datto SIRIS devices

Each Datto SIRIS device comes equipped with at least one auxiliary NIC which may have various usages.. Ok, here we go. Let’s learn the usages of auxiliary NICs on Datto SIRIS devices:

Model:  S500  S1000  S2000  S3000  S5000  S10000  S20000  S40000
# of NICs: 2 2 2 4 4 4 4 4

Possible operations for auxiliary NIC(s)

1. NIC Teaming
Please Note:  Some network hardware may need configuration for NIC teaming to be implemented successfully.  Please contact your Network Administrator for assistance with the configuration of your network hardware.
2. Protection of machines on a separate subnet with no route in place
3. SIRIS with ShadowSnap BMR
4. Separate NIC for a virtual machine hosted on the Datto SIRIS

 1. NIC Teaming

• First please contact Datto Technical Support so that a Datto Technical Support Engineer can run the task “”enableBondConfig“” on your local Datto SIRIS device.
• Once Datto Technical Support has run this task the Datto device’s local web console will now have a “”Bonded Interfaces“” sub-section in the Under the Network tab.
• In this section select the two NICs to be bonded together and click “”Apply Bond Settings””


Example: Bonded Interfaces section of Network Tab.

• Once the Bond Settings for the NICs has been applied refresh page by clicking the Network tab.
• Confirm the new settings for bond0 are correct and reboot the device.


Example: Bond0 configuration

2. Protection of machines on a separate subnet

• If a Datto SIRIS device needs to communicate across multiple subnets to protect various machines it may be configured to do so with the use of the auxiliary NICs as in some situations this configuration may be easier to set up than configuring a static route.
• In these situations simply plug in a live network cable from the other subnet into one of the auxiliary NICs on the Datto SIRIS.
Then configure the NIC on the Datto device’s local web console under the Network tab for an IP and Netmask.

    Very Important: Enter for a gateway for all auxiliary NICs to avoid routing problems.  
   A gateway configured with will not allow traffic out and will leave the primary NIC (eth0) responsible for outbound communications.


  Example: Datto device configured for protection of machines on Class A, B, & C subnets

3.  SIRIS with ShadowSnap BMR

• The Bare Metal Restore (BMR) process for Datto SIRIS with ShadowSnap devices use an auxiliary NIC to perform.  This however can be circumvented by use of a USB flash drive.
• Please reference the Datto SIRIS Bare Metal Restore Guide for further details.

4.  Use separate NIC(s) for Virtual Machine(s) hosted on the Datto

• By default a Virtual Machine launched on a Datto device (with network connectivity) will bridge to the primary NIC (eth0) for network connectivity and will not use the auxiliary NICs.
• The auxiliary NIC(s) may however be used In some rare situations such as a Disaster-Recovery (D-R) Virtual Machine of a Protected System in which multiple NICs are used in it’s production environment.

Thanks for reading this article. We hope it was helpful in demonstrating the usages of auxiliary NICs on Datto SIRIS devices. If you need additional assistance, please don’t hesitate to contact us.

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Dale Shulmistra is a Business Continuity Specialist at Invenio IT, responsible for shaping the company’s technology initiatives -- selecting, designing, implementing & supporting business continuity solutions to bolster client operational efficiencies and eliminate downtime.

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