topic Re: When snapmirroring, do we need to update /etc/hosts file on both controllers? in Active IQ Unified Manager Discussions

When snapmirroring, do we need to update /etc/hosts file on both controllers?

PRAVEEN_KAKANI — Thu, 05 Jun 2025 06:12:09 GMT

I am not able to do snapmirror through oncommand, till i update the /etc/hosts file using command line.

Is that the process or prerequisite?

thanks in advance

Re: When snapmirroring, do we need to update /etc/hosts file on both controllers?

karthikv — Mon, 28 Jan 2013 15:51:16 GMT

It is not a prerequisite for SnapMirror. What problem did you face when you tried to perform SnapMirror using System Manager before updating /etc/hosts file.

Also, what did you update in /etc/hosts file ?

Please provide us the support bundle and we will look into the problem.

Regards,

Karthik

Re: When snapmirroring, do we need to update /etc/hosts file on both controllers?

PRAVEEN_KAKANI — Mon, 28 Jan 2013 16:02:49 GMT

When i tried, I got an error saying "source filer not found"

In /etc/hosts file,

On the dest side: I added a line with Source filer and vice versa.

After that i am able to do all migrations

Re: When snapmirroring, do we need to update /etc/hosts file on both controllers?

AGUMADAVALLI — Mon, 28 Jan 2013 19:40:21 GMT

If you properly configured the resolution of IP to Hostnames with interfaces in AD and all dns resolution is occuring thru it. you dont need to define in /etc/hosts files.

Make sure the proper interface is set for snapmirror.access option.

For best practices follow the link: https://communities.netapp.com/blogs/mandown/2010/06/09/setting-a-preferred-interface-for-snapmirror-traffic-in-protection-manageroperations-manager

thank you

AK G