Ah. Well, circular logging eliminates the possibility of point-in-time recovery 
(just like "simple" logging in SQL). If that's ok with you, then turn it on.

But I'd personally get Veeam to fix their problem. VSS is really not that hard.

From: Paul Cookman [mailto:paul.cook...@selection.co.uk]
Sent: Friday, June 01, 2012 5:49 AM
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

I do backups, I am just finding that Veeam is not committing the logs when any 
of the databases are set to replicate.

From: Michael B. Smith 
[mailto:mich...@smithcons.com]<mailto:[mailto:mich...@smithcons.com]>
Sent: 01 June 2012 09:54
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

Lots of people. If you aren't doing backups, there is no need to retain 
logfiles...

From: Paul Cookman 
[mailto:paul.cook...@selection.co.uk]<mailto:[mailto:paul.cook...@selection.co.uk]>
Sent: Friday, June 01, 2012 3:25 AM
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

Does anyone use circular logging on their primary dag node?

From: Michael B. Smith 
[mailto:mich...@smithcons.com]<mailto:[mailto:mich...@smithcons.com]>
Sent: 30 May 2012 16:14
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

Huh. I've been using this in Win 2012. Didn't realize it was available in Win 
2008 R2.

Be aware: if you use this in a DAG situation, you then become responsible for 
all quorum management issues.

From: Paul Cookman 
[mailto:paul.cook...@selection.co.uk]<mailto:[mailto:paul.cook...@selection.co.uk]>
Sent: Wednesday, May 30, 2012 11:07 AM
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

Very interesting, thanks.

From: Robinson, Chuck 
[mailto:chuck.robin...@emc.com]<mailto:[mailto:chuck.robin...@emc.com]>
Sent: 30 May 2012 15:50
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

I believe this will work for you. http://support.microsoft.com/kb/2494036

Chuck Robinson
_______________
Sr. Solutions Architect
Microsoft Certified Master: Exchange 2010
MCITP: EA Windows Server 2008

EMC Consulting
Mobile: 973-865-0394
chuck.robin...@emc.com<mailto:chuck.robin...@emc.com>
www.emc.com/consulting<http://www.emc.com/consulting>

Transforming Information Into Business Results

From: Paul Cookman 
[mailto:paul.cook...@selection.co.uk]<mailto:[mailto:paul.cook...@selection.co.uk]>
Sent: Monday, May 28, 2012 4:19 PM
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

Do you know if there is a way to have a two node multisite Dag that cannot 
failover unless I want to. I don't mean -Activateonly where the DB on the 
remote site cannot come up, I mean where the primary node can have its witness 
get rebooted or itself and the DBs in the Primary will always come up with out 
the remote node stealing quorum?

Regards

Paul.





From: Paul Cookman 
[mailto:paul.cook...@selection.co.uk]<mailto:[mailto:paul.cook...@selection.co.uk]>
Sent: 28 May 2012 12:31
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

What I don't understand is why it effected all databases on the server when 
there was only one DB in the dag, it doesn't sound right because what if I 
wanted to have an active active?

From: Steve Goodman 
[mailto:st...@stevieg.org]<mailto:[mailto:st...@stevieg.org]>
Sent: 28 May 2012 09:07
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

If it's multi-site yep

Steve

From: Paul Cookman 
[mailto:paul.cook...@selection.co.uk]<mailto:[mailto:paul.cook...@selection.co.uk]>
Sent: 28 May 2012 08:49
To: MS-Exchange Admin Issues
Subject: RE: dag issue?

This does sound like what happened, I was a bit surprised as I only had one 
test DB in the Dag, I didn't expect it to effect all databases.

Would you still go with having DAC mode on?

From: Steve Goodman 
[mailto:st...@stevieg.org]<mailto:[mailto:st...@stevieg.org]>
Sent: 28 May 2012 07:30
To: MS-Exchange Admin Issues
Subject: Re: dag issue?

As a first point of call I would look at increasing the cluster timeout 
settings. I've heard similar things about Veeam before during backup - mainly 
nodes failing over and IIRC there is some threads on the Veeam Community site 
about the issue.

Steve

Sent from my iPhone

On 27 May 2012, at 11:07, "Paul Cookman" 
<paul.cook...@selection.co.uk<mailto:paul.cook...@selection.co.uk>> wrote:
I had an issue Friday morning I wanted to run past someone. I have created a 
two node Dag multisite with witness in the primary site, DAC enabled. I am 
testing as I go so I only had a test DB as part of the DAG. (Servers are 
Virtualised and use Veeam for backups) While committing the snapshot the 
primary server momentarily lost communication to all servers and all the (LIVE) 
databases dismounted and wouldn't remount. In a state of panic I removed the 
Dag to get users working again.

I think from going through the logs that possibly the remote site node got 
quorum of the witness and then it believed that the databases were up on the 
remote site (set to Activate only and not automatic by the way). Possibly if I 
had rebooted the remote server the primary would of got quorum again and 
allowed me to mount databases?

Any thoughts on this as I need to be able to reboot the primary server if 
needed without the databases not being able to mount. I don't mind my failover 
being completely a manual process.

What do you think on what happened and a solution to my problem?

Kindest regards,

Paul.



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