- RAN ONLINE PRIVATE SERVER DISCONNECT AFTER 20 MINS PATCH
- RAN ONLINE PRIVATE SERVER DISCONNECT AFTER 20 MINS FULL
If you do read that then you might notice the term “lossy failover”.Ī lossy failover is a potential data loss scenario.
RAN ONLINE PRIVATE SERVER DISCONNECT AFTER 20 MINS FULL
If you want to dive into the full details read up on the Best Copy Selection process here.
In larger DAGs there is a little more to it. In a simple two-member DAG it is pretty obvious where the active database copy will end up. In the process of Windows Server stopping Exchange services, the Primary Active Manager will try to switchover any active mailbox database copies to another DAG member. In most situations the Exchange Server gets little say in the matter. When someone tells that server to shut down or restart, Windows is going to shut down or restart. And I’m sure that anyone who has experienced a scenario where those scripts fail to switchover a database due to some other underlying condition at the time would agree with me.įor anyone else who is just running them because it looks like “the way it is done”, and is curious why this is the wisest course of action, let’s look briefly at the possible consequences of not running the DAG maintenance scripts during server maintenance.Ĭonsider that Exchange Server is an application running on a Windows server. The short answer, from my point of view, is that running the DAG maintenance scripts is the wisest course of action. However it is still a topic worth discussing.
RAN ONLINE PRIVATE SERVER DISCONNECT AFTER 20 MINS PATCH
Now Greg does say that this is how they patch their lab servers, so it isn’t clear whether this is how they treat their production servers. To be fair we didn’t go to Exchange 2010 until SP3 so maybe things are more better with SP 3 but we don’t bother with any of the procedures above and use Exchanges built in intelligence.
I would like to know how many Exchange admins server admins actually follow these steps when they patch, we have a lab where we just patch Server A in a two multi role server DAG reboot it, then patch Server B and reboot it, then balance out the databases evenly among them and call it an evening, no problems so far In a comment on my article about installing updates on Exchange 2010 DAG members Greg asks:
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