When I upgrade the first vcsa to 7.0, what will happen to the 6.7 vcsa that is yet to be upgraded?
- The 6.7 VCSA will be running and will not be affected.
Will the linked mode end?
- No. From the 7.0vCenter you can view both 7.0 and 6.7 vCenter but you cannot view the 7.0 vCenter from 6.7 vCenter unless it is also upgraded to 7.0
Also, does it matter which one is done first?
- No
If the PSC instance runs on the other instance still running 6.7 will it be an issue?
- Upgrading to 7.0 will do a convergence upgrade. Meaning it will have its own PSC. So the 6.7 PSC has to be decommissioned at the end.
https://blogs.vmware.com/vsphere/2020/03/vsphere-7-vcenter-server-7-migration-upgrades.html
Regards,
Navin A