vRops "Continuous Availability" mode

[AllVirtual1]

Any help in troubleshooting the following would be much appreciated.

I have two DCs managed by two different vCenters

I have vRops 8.1 installed with

One Master node - Cluster01 - vCenter01

Witness Node - Cluster02 - vCenter01

One Data Node - ClusterX - vCenter02

I understand that this meets the minimum requirement for "Continuous Availability" mode.

However when I enabled CA, it came back with a failure as in the attached image. The message was to "Take Cluster offline to enable CA"

I did that and also restarted all the nodes and then tried again but now the failure is immediate and the message is

"Operation failed, if the error persists, contact VMware Support"

Is my node distribution across the two vCenters correct?

How do I troubleshoot this ?

What log files do I look at ?

I spent a lot of time trying to figure this out, but not getting anywhere.

Thanks.

[FredGSanford]

Sounds like a case for GSS.  Check /storage/log/vcops/log/casa/casa.log

[AllVirtual1]

Thanks for the tip, I'll check that log file.

Meanwhile, is my node layout configuration correct ? Do I need to add more nodes ?

[RickVerstegen]

Some additional info that may help.

vRealize Operations cluster needs to be deployed across 2 fault domains.

Fault domains can be:

Two vSphere clusters in same site or two vSphere clusters across different sites.

A witness node to monitor split brain scenarios on 3rd site. Minimum size with CA is three nodes. Master, replica, and witness is a supported config.