A database availability group (DAG) is the base component of the high availability and site resilience and is a boundary for mailbox database replication.
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space needed to index databases
We have a DAG that is spread across 6 mailbox servers (3 primary, 3 secondary) with volumes of space carved out from our NAS connected via iSCSI. The databases are shared between them for failover and ...
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1answer
127 views
Exchange, CAS, KEMP Load Balancer issue
We recently purchased 2 Kemp 2200 Load Balancers for our Exchange DAG (3 servers).
We created the virtual service IP in KEMP that all the mail traffic will go to.
We replaced the Exchange IP in the ...
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60 views
DAG IP address is that of the *passive* site. What could cause this and how do I correct?
I have two sites in a stretched DAG across 2 sites. When I ping the name of the DAG (not CAS array) I get the IP address of the remote site where no mailbox replicas are mounted.
What impact does ...
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109 views
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?
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135 views
Exchange 2010 two nodes disaster recovery
I currently have one on-premises Exchange 2010 Std server sitting on a Windows 2008 R2 Entreprise. The server is backed-up on tape and now I've been asked to add an off-site replication for businness ...
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169 views
Setting up Exchange DAG and DR/Replication planning
I have a question about the proper way to setup Exchange replication/Disaster Recovery. I'll start by stating my end result is to have an Exchange server at my current location, and one located at a ...
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2answers
520 views
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 ...
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110 views
Resynchronizing after -catalogonly on failed exchange database copy
I've been experiencing problems with a exchange database after removing and readding it to a passive node. After a total reseed which also deleted the old files i ran into an error telling me that one ...
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1answer
160 views
Exchange 2010 with DAG - problems with communication
I've got 2 Exchange servers running HUB, CAS and MBX with DAG, 2 servers being Active Directory, 1 witness server and 1 TMG server. They are split evenly between 3 Hyper-V servers:
Server 1
...
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98 views
Exchange 2010 DAG DAC mode would prevent having some databases active on secondary site?
If I have a two nodes Exchange 2010 DAG stretched over two sites with DAC mode enabled and all databases active on primary site, I would still be able to activate some databases on the secondary site ...
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1answer
742 views
Exchange 2010 site resilience vs actice/passive stretched DAG configuration
Does it make sense to place DAG members in different sites when the witness server must stay in one of them? Think to this configuration: two DAG mailbox servers, one into primary site with witness ...
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1answer
103 views
Will Forefront 2010 Antispam/Antivirus protection work on all-in-one Exchange 2010 servers in DAG
We have 2 Exchange 2010 servers with every single role on each. Servers are in DAG mode and they have TMG 2010 as entry point and doing as load balancer. Can I install Forefront 2010 on both Exchange ...
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81 views
Exchange 2010 database FailedAndSuspended
Some of our Exchange databases regularly end up with a status of FailedAndSuspended. I think this is probably because the databases were set up with Circular Logging and the backup copy of the ...
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1answer
105 views
Is is a good idea to put SMTP Shadow replication on the same VLAN as DAG replication?
We have a VLAN for DAG replication, Recoverpoint (SQL Data), and right now SMTP Shadow replication is going over with the production traffic.
Should shadow replication be limited to the site? Should ...
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1answer
305 views
Can I copy Ex2010 databases physically before replicating them via a DAG
We have two Exchange 2010 boxes and are attempting to use DAG (similar to this setup except we are less than 1 mile away from the remote office)
However we were wondering if it is possible to ...
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2answers
401 views
Witness directory location in a two-server Exchange 2010 scenario with DAG
I am going setup a DAG in a brand new single-site two-server Exchange 2010 SP1 configuration, with both servers running CAS/HUB and MAILBOX roles and hardware-balanced CAS (no Edge roles nor Unified ...
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1answer
257 views
What GPO rights are required for an exchange service account?
I'm trying to create an exchange domain service account. I'd like to define the rights in a Group Policy Object.
since this is for both a 2 node DAG, and 2 node CAS Array, I need to know the rights ...
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1answer
134 views
What topology to choose for 2 locations with 2x Exchange 2010 licenses (with more to be bought eventually?
We want to introduce Exchange 2010 in our organization.
We have 2 locations:
Main location has 2 ISP links used with one Forefront TMG 2010 (100 people on site)
Second location has 1 ISP link with ...
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2answers
187 views
Exchange 2010 DAG
You may have just seen my other question here.
One of the other things the client failed to tell me was that they also wanted a DAG between the U.S. and a site in Europe. I had never set up a DAG, ...
