A database availability group (DAG) is the base component of the high availability and site resilience and is a boundary for mailbox database replication.
Questions tagged [dag]
51 questions
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Search on Exchange not working with EventID 1012: "Service at the endpoint address 'net.pipe://localhost/3867' is unavailable"
Overview
We have DAG with two nodes of Exchange 2016 CU12 running on up-to-date Windows Server 2016.
Search is failing on any mailbox residing in any database mounted on one of the nodes. Other node works properly.
Event 1012 is reported repeatedly…
Michał Sacharewicz
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Can I prevent Exchange from indexing during workhours?
We run 2 Exchange servers in a DAG environment. Both servers host 2 databases and have a passive copy of the opposite 2.
One of our Exchange servers is indexing a passive copy of the largest database, causing CPU to rise to 99% and memory to 80% (VM…
Kevv
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Will Exchange DAG copy unstable/corrupt database changes?
We just set up a DAG environment between 2 Exchange Servers.
One of the servers hosts the active databases and one hosts passive copies (no lagtime).
I think this will work perfectly in the case of a hardware failure but I'm worried about the…
Kevv
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Exchange 2013 DAG over 2 Subnets replication failure
I have 2 Exchange 2013 Standard servers on two different subnets. One is on our local network and the 2nd is on our Cloud provided by our ISP. Adding the 2nd server to DAG went well and seeding the database over was ok too, however, the 2nd server…
aniga
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Exchange 2013 DAG Cluster Unable to add second sever
I have two servers (EXCH1 and EXCH2) running Exchange Server 2013 Standard, and a third file server that is a DAG Witness.
The first server is a Windows Server 2012 R2 Standard machine and the second server is a Windows Server 2008 R2 Enterprise…
Kevin
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Exchange 2010 - 2 server DAG (all roles)
At the moment I have a single Exchange 2010 server with all roles (MB, HT & CAS).
I am looking to improve our email recovery time in the event of a disaster. I understand that true HA with site resiliency requires CAS arrays and hardware network…
OPGailey
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Exchange Server 2013 Content Indexes Failed in a DAG that spans a WAN
We recently were the victim of database corruption in one of our mailbox servers. In our environment we have two mailbox servers and two CAS servers. One Mailbox Server and one CAS Server is in our Corporate Headquarters, the other Mailbox Server…
Chuck Herrington
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Backing up 2 Exchange Servers in a DAG
A little explanation of our setup..
We have an Exchange 2013 in our main site with 1 Database Active on it and then we have a DR Exchange 2013 with the same Database but as passive. Users are currently connecting to both servers since the DR is a…
StefanGrech
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Can I use database portability to convert an IP -less DAG to a standard DAG in Exchange 2013?
Exchange 2013 allows for an "IP-less" DAG, something that exists in Windows 2012R2. This is becoming a bit of an issue as a lot of software doesn't support it.
I want to take my 3 node DAG and convert it into something more standard. Can I do…
makerofthings7
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Exchange 2013 DAG Replication
I'm in the process of setting up a 2nd Exchange server 2013 and then Create a DAG for disaster recovery purposes. At the moment we have one CAS/Mailbox Exchange 2013 Server installed on the main site and now they would like to have a second Exchange…
StefanGrech
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What database am I seeding from in a stretched DAG?
I have a stretched DAG across 2 sites, with 4 copies. One of the remote copies failed, and I issued a re-seed operation with the remote&working copy as a source.
Knowing this, I tried to work backwards, and see if Powershell is able to tell me…
makerofthings7
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DFS-R not working on Server 2012 with Exchange DAG
We have 2 servers running a small network. The goal is to have the 2 servers as HA servers on a low budget. Therefore we deployed Windows Server 2012 and configured DFS-R which all worked fine.
We then proceeded to deploy Exchange 2010 SP3. The…
alcomcomputing
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When CopyQueueLength is high, how do I control which server is the source?
When I have a DAG with copies spread all over the world, and the initial seeding is already complete, how does Exchange control which server is used to fulfill the outstanding CopyQueueLength logs that need to be copied?
How can I control this?
The…
makerofthings7
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Exchange DAG fails over during backup
It seems like every night during our backup process, the Exchange DAG fails over. Is it possible to change a tolerance setting to prevent the DAG from unnecessarily failing over during backup times?
marcwenger
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Backup Exec-Should Exchange 2010 be backed up as DAG and individual servers?
I have two Exchange 2010 servers running a DAG. One server is onsite, the other is at a co-lo.
I'm running Backup Exec 2012 to backup the DAG. My question is:
Do i need to configure jobs to backup the information store on one of the individual…
Zero Subnet
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