Solved

Exchange 2013 Active/Passive servers

Posted on 2014-01-29
7
276 Views
Last Modified: 2014-02-12
I am noticing that my DB's are being activated on a server that I am not activating it on. The server that has become passive seemingly has no issues. I reactivate DB on server again and it switches back in less than a week. I am looking for other reason why this may be happening.
0
Comment
Question by:Group_007
7 Comments
 
LVL 13

Assisted Solution

by:imkottees
imkottees earned 250 total points
ID: 39820118
Hi,

you can schedule a script to notify you when there was a failover. check for the events at the time.
0
 
LVL 4

Accepted Solution

by:
pcmghouse earned 250 total points
ID: 39820152
Can you please check your CU version.
We had same issue with CU2. CU3 has solved this issue.
(What I have understood is that high availability feature does the automatic load balancing based on the server performance.)

CU3 has fine-tuned some throttle values. I would also suggest to check the HD performance of your servers at peak times.
0
 
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39820286
Failover doesn't happen without something being logged. You need to look through the event viewer of both servers to see when the failover occurred and what events proceeded it.

I am seeing a lot of failovers occur during backup runs and as a result of suspect network cards or poor network performance.

Simon.
0
NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

 
LVL 4

Expert Comment

by:pcmghouse
ID: 39820311
I agree with Simon. Virtual Machines have these issues more.
You can check event logs at Operational (Microsoft\Exchange\High Availability). It provides the database mount and unmount events.
0
 
LVL 1

Author Comment

by:Group_007
ID: 39821091
Thanks alot of good information. I have confirmed that CU2 is the latest update. I will try to update this weekend.

I will also comb through the event logs and report my findings. Thanks very much!
0
 
LVL 4

Expert Comment

by:pcmghouse
ID: 39834738
There is a good builtin script i found:
CollectOverMetrics.ps1 -DatabaseAvailabilityGroup DAG1 -Database:"DB*" -GenerateHTMLReport -ShowHTMLReport
Read this link before testing it:
http://technet.microsoft.com/en-us/library/dd351258(v=exchg.150).aspx#CollectOver
0
 
LVL 4

Expert Comment

by:pcmghouse
ID: 39853145
have you upgraded your servers to CU3?
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

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…
This process describes the steps required to Import and Export data from and to .pst files using Exchange 2010. We can use these steps to export data from a user to a .pst file, import data back to the same or a different user, or even import data t…
In this video we show how to create an Accepted Domain in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Ac…
how to add IIS SMTP to handle application/Scanner relays into office 365.

778 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