sara2000
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MS Windows Cluster vs Exchange DAG cluster
Experts out there, I have a question on Exchange 2016 DAG and I hope someone will shed light on it. I noticed the Exchange 2016 DAG has a cluster setting and it uses a Witness server.
Is it the same as MS windows cluster or Exchnage 2010 DAG uses a little feature of windows clustering?
The reason I am asking this question is that I noticed that Windows Tuesday's patches have released KB4550947 and these patches have an issue with cluster password.
We do not have a Windows cluster in our infrastructure, but we have Exchange DAG. As I know there is no password for the Exchange cluster.
Is it the same as MS windows cluster or Exchnage 2010 DAG uses a little feature of windows clustering?
The reason I am asking this question is that I noticed that Windows Tuesday's patches have released KB4550947 and these patches have an issue with cluster password.
We do not have a Windows cluster in our infrastructure, but we have Exchange DAG. As I know there is no password for the Exchange cluster.
Exchange DAGs cluster the mail databases so each DAG member has a copy of all the mail.the difference between that and windows clusters is that a windows cluster shares the same storage; if one node in the cluster fails, another node will own the storage holding databases and transaction logs providing fault tolerance.
ASKER
Based on the link below the cluster service may fail to start. What the cluster service to do with minimum password length?
https://support.microsoft.com/en-us/help/4550947/windows-10-update-kb4550947
https://support.microsoft.com/en-us/help/4550947/windows-10-update-kb4550947
What the cluster service to do with minimum password length?
is says in the article it is related to a group policy setting
still irrelevant here because you are not using the cluster service
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ASKER
MAS: thank you for the information. Baes on your link above,
"Exchange 2016 DAG members can host a mix of active and passive database copies because the switchover/failover occurs at the database level, not the server level. So there is no concept of an “active server” or a “passive server”."
My understanding is that no password issue will not be on Exchange DAG whether we set the password length to less than 14 characters or not via GPO when we apply the patches, am I correct?
"Exchange 2016 DAG members can host a mix of active and passive database copies because the switchover/failover occurs at the database level, not the server level. So there is no concept of an “active server” or a “passive server”."
My understanding is that no password issue will not be on Exchange DAG whether we set the password length to less than 14 characters or not via GPO when we apply the patches, am I correct?
-->My understanding is that no password issue will not be on Exchange DAG whether we set the password length to less than 14 characters or not via GPO when we apply the patches, am I correct?
Yes. If you set minimum password length is less than 14.
Yes. If you set minimum password length is less than 14.
ASKER
I do not see any password configuration anywhere in Exchange DAG, which password we have to see to a minimum of 14 Characters?
There is default domain policy as mentioned in the article above. You will not configure these in Exchange EAC.
They're different things. Windows Clustering clusters services and applications running on the operating system.
Exchange DAGs cluster the mail databases so each DAG member has a copy of all the mail. The loss of any one Exchange server doesn't stop mail from flowing.