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Can someone please suggest that in a scaled Sitecore 9 environment for some reason if the Roles other than CM and CD are down, how the Websites will be impacted?

If the xConnect, Marketing Automation, xDb Reference Data Roles are down, will the CM and CD roles will be down as well or we have any configuration to avoid such dependency?

  • Have you been able to demonstrate on your developer workstation what happens when any of the mentioned roles are unavailable? – Michael West Feb 12 at 21:07
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    You have asked two very specific questions here. Please can you split out the second question about load balancing. – Mark Gibbons Feb 12 at 22:15
  • Edited the question. Though I think both question are related, like if the CD roles are dependent on xConnect we can probably have load balanced xConnect to prevent the Sites going down. But nvm, I can post a separate question for that. – Rathan M Feb 13 at 19:32
  • @MichaelWest on developer work station we have XP0 topology, but I will give it a shot. Thanks for your suggestion. – Rathan M Feb 13 at 19:34
  • Developer or Production, XP0 or XP1, xConnect is still a separate service. Turn it off and see what happens. Experience will be the same regardless of topology. – Pete Navarra Feb 13 at 21:24
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Well i just tried on an otherwise empty install of 9.1.

At least the homepage and a basic edit and publish would work. Other stuff like Experience Profile would just say An error has occurred.

It would be far safer to run an instance of XM1 instead.

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With xConnect off, the website will keep working BUT if you have any xConnect/Tracker code that is not null checked, it will fail.

Sitecore.Tracker?.Current?......

or

if(Tracker.Current?.IsActive == true)
{
    // do stuff
}

All of the Analytics related actions in Sitecore forms will cause the forms to stop working. And action that happens after the failing analytics action will not run.

For Marketing Automation, Processing Engine and xConnect Search Indexer are just services and run out of channel from the website. None of the MA will run and any xConnect searching will be out of date.

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