Go Premium for a chance to win a PS4. Enter to Win

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 298
  • Last Modified:

Exchange 2013 Active/Passive servers

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
Group_007
Asked:
Group_007
2 Solutions
 
imkotteesCommented:
Hi,

you can schedule a script to notify you when there was a failover. check for the events at the time.
0
 
pcmghouseCommented:
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
 
Simon Butler (Sembee)ConsultantCommented:
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
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
pcmghouseCommented:
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
 
Group_007Author Commented:
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
 
pcmghouseCommented:
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
 
pcmghouseCommented:
have you upgraded your servers to CU3?
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now