DirSync Upgrades
Requires Global Admin PIM
When upgrading dirsync ensure you upgrade on both servers.
AzureSync01 - Hosted in Azure (access via AzureJump01)
AzureSync02 - On-prem VM
On prem ensure you take a snapshot, in Azure you're more limited. Incase of a failed installation on the AzureSync01 server, uninstall, reboot and attempt the reinstall.
Ensure both versions match and you can complete an ADSync post install with;
Start-ADSyncSyncCycle -PolicyType Delta