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Deploying additional Exchange Server 2013 standard SP1 mailbox server ?

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Last Modified: 2017-04-25
Hi All,

I'm about to deploy 2x additional Exchange Server 2013 SP1 + CU15 Mailbox server role to the existing Exchange server in AD domains with the following role and version like:

			    ServerRole            Edition  AdminDisplayVersion
			    ----------            -------  -------------------
PRODMBXCAS01-VM Mailbox, ClientAccess Standard Version 15.0 (Build 1130.7)
PRODMBXCAS02-VM Mailbox, ClientAccess Standard Version 15.0 (Build 847.32)
PRODMBX03-VM Mailbox               Standard Version 15.0 (Build 847.32)

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So my question is, do I need to worry for any outage or any caveats that is stopping me doing this deployment ?
Any outage required or interruptions to the mailflow ?
If I configure DAG is there any outage to the above email flow ?

Do I need to install the same level of Exchange Service pack or Cumulative update rather than installing the latest CU15 on the new server ?

Thanks in advance.
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MaheshArchitect
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Senior IT System EngineerSenior Systems Engineer
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Hi Mahesh,

So if I install the two new mailbox servers with the latest CU16 is there any outage when I configure the DAG with existing mailbox server ?

I will install the update on the older server when the DAG configuration competed to avoid any outage.
Architect
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Senior IT System EngineerSenior Systems Engineer
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Hi Mahesh,

My understanding is that when I apply the CU16 to the existing mailbox server, I'm risking outage and email flow interruptions, hence I'm building DAG to avoid the outage.

This is what I'm proposing to do:
  1. Deploy 2x VM on Windows Server 2012 R2 patched to the latest.
  2. Install Exchange Server 2013 SP1 Mailbox server role
  3. Install CU16 on the 2x new mailbox server role
  4. Configure the DAG with the existing mailbox servers.

my goal is to avoid any email outage by building DAG servers.
AmitIT Architect
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MaheshArchitect
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Senior IT System EngineerSenior Systems Engineer
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Hi Amit,

The reason I introduce the new server here is because, I'm about to setup DAG with the existing Mailbox server which is still on SP1 (no CU).

So I guess, I will have to install the mailbox server with the same level (SP1 only no CU) to be safe to avoid any outage?
MaheshArchitect
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that will also work, but it will increase your work

U will introduce new servers with SP1 level and then you have to update CU again for all servers including old servers

but if update existing server to latest CU, then you can install new servers directly with latest CU and here u will save work
Senior IT System EngineerSenior Systems Engineer
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Yes Mahesh, I understand that from your previous post.

The problem is that when installing the CU16 now in my existing Mailbox server, It can cause long outage of email flow, that's not what I want.

hence I'm going this way to make it the same as long as the Mailbox server role is the same version before configuring DAG.

Is it possible to create DAG with the mailbox server running different version of Cumulative Update ?
Senior IT System EngineerSenior Systems Engineer
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Thanks !