How to perform up high availability upgrade with database changes?

Hi,
Can someone point me to pertinent documentation for performing live upgrades? Specifically I'm looking for best practice for setting up and attaining High Availability especially during application upgrades which have db changes.
Thanks in advance,
Rich

Hi,
For internal clients, yes, your requirement can be met by setting the autodiscover site affinity by using the “AutoDiscoverSiteScope” parameter in Set-ClientAccessServer command:
https://technet.microsoft.com/zh-cn/library/bb125157(v=exchg.150).aspx
For external clients, I am afraid “No” because the “autodiscover.domain.com” only points to one CAS server.
Thanks,
Simon Wu
TechNet Community Support

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