When attempting to establish DR between Active and Standby VCO an error message is seen on the Active VCO stating:
Failure Launching Standby
transitionToStandby failed: check standbyAddress, drVCOUser, drVCOPassword
On-Premise
This can be caused by a mismatching software release, example below:
Active VCO: 5.0.1.0, R5010-20220803-0005-GA-78ef47157
Secondary VCO: 5.0.1.0, R5010-20220912-2116-GA-7c1a80301e
The resolution for this behavior is to ensure the version matches for both VCOs prior to deployment and DR feature enabled.