Solved

Exchange 2013 (On 2008 Server R2) - Cluster issues when quorum lost

Posted on 2016-10-28
4
31 Views
Last Modified: 2016-11-13
9 Exchange 2013 mailbox servers all running on Windows 2008 Server R2. All part of the same DAG (so just one cluster).

Inadvertently, powerer off 5 of these mailbox servers - bad idea. According to my reckoning, due to odd number of members, the quorum should be relying on a majority count of members. Since it no lonfer has a majority then the databases should be dismounted on the remaining servers.

This didn't happen. The exchange databases stayed up - albeit the CAS servers went to 100%.

We then powered back up the 5 servers but the cluster did not recover on its own. On each of the 4 servers that did not power down the cluster status still showed down. A restart of the windows cluster service on each of the 4 servers sorted this out.

Question is :-

1. Any idea why exchange did not dismount DBs when quorum was lost?

2. Why did cluster not recover when the servers were back?
0
Comment
Question by:paulfoel
  • 3
4 Comments
 
LVL 19

Expert Comment

by:Zaheer Iqbal
ID: 41863650
I would say this should be logged with Microsoft.
0
 
LVL 1

Author Comment

by:paulfoel
ID: 41863743
If my client had a support contract....... :-(
0
 
LVL 1

Accepted Solution

by:
paulfoel earned 0 total points
ID: 41878515
Looks like powerinbg off DAG members is never a good idea.
0
 
LVL 1

Author Closing Comment

by:paulfoel
ID: 41885225
No other answers provided.
0

Featured Post

Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Lotus Notes – formerly IBM Notes – is an email client application, while IBM Domino (earlier Lotus Domino) is an email server. The client possesses a set of features that are even more advanced as compared to that of Outlook. Likewise, IBM Domino is…
Restoring deleted objects in Active Directory has been a standard feature in Active Directory for many years, yet some admins may not know what is available.
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

680 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question