Are you patching all your machines at the same time, overloading your SAN? Are you running webroot or similar horrifying security software? We generally see <5

Are you patching all your machines at the same time, overloading your SAN? Are you running webroot or similar horrifying security software? We generally see <5 minute downtimes on all our Server 2016 and 2019 VMs, never more than 10 minutes.