Using VM Ware for Exchange failover

Hello Experts,
we are investigating creating a fail over for a customers exchange.
They have exchange 2010 on one windows 2008 server, we are looking to propose V centre essentials for DAG fail over. VM ware advise that a link between 2 servers would suffice. My question is what else should we be considering with an install like this  and would a third server be unnecessary?
Is it just the V center license we need? rrp $5600
we would look to place an identical server as its mirror
I gather we don't need another exchange license.
How much time should we schedule to configure something like this?
thanks in advance
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John GobertEnterprise Systems ConsultantCommented:
Is this for on-site or off-site failover?  Do you have any numbers on the size of the current Exchange server (user count, database size, etc.)?  Is the current server virtualized?  Are you looking to do two standalone servers where one is a mirrored failover of the production box?
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Do you have a SAN or Shared Storage, for use with VMware HA? (High Availability)

what features of VMware vSphere are you considering VMware FT?
unrealone1Author Commented:
Hi ,
this is for on-site high availability
There are approx112 mailboxes, 300GB database
The current server is not virtualized

Are you looking to do two standalone servers where one is a mirrored failover of the production box? yes sounds the less complicated answer
No SAN in place , is that better than a dedicated server?

The VMWare aspect we are looking for is resiliance across 2/ 3 servers for exchange to be more redundant.
the product advised by VMware is essentials + to achieve thios across 2 servers.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
There is no Resilience in VMware Essentials.

There is no VMware HA or VMware FT in VMware Essentials.

if you have no shared storage or SAN, you cannot use VMware vSphere HA or FT for failover, I'm afraid, the server will also have to be virtualised and have a shared storage SAN.

You would be well advised to use two physical servers and the features available in Exchange and Windows.

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John GobertEnterprise Systems ConsultantCommented:
Let's split this into two main discussion groups.  One is about how you're planning to update the Exchange deployment to meet your client's needs and two would be using VMware to make that happen.

What exactly do you plan to do with Exchange?  Are you looking for database redundancy only using DAG or are you going to deploy additional roles?  You do realize that you'll need additional server licenses for this, right?

Once we can lock down what you want to deploy then folks can give you more feedback on leveraging VMware to make that happen in the best way possible.
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
The beauty of Exchange 2013 and DAGs are that:

1. No shared storage required (with the exception of file witness share)
2. No need identical hardware
3. Ability to utilize both servers concurrently
4. No requirement for virtualization (will work in a virtualized environment though)

I am not sure as to what you are looking for and as far as I can tell from your post, there is not enough information to provide advise that will be the best for your environment.

Please provide more information such as:

- Business requirements (RPO, RTO, off-site secondary site, etc.)
- Number of users
- Number of databases and size for each database
= Infrastructure details (SAN, etc.)
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