Allow Exchange to coexist with the enterprise cloud

BKJIA March 29 Internet headlines: companies that run Exchange servers within the Organization but host their mailboxes in Microsoft Data Centers are very interested in the benefits of cloud computing, this is the so-called "Peaceful Coexistence". From the perspective of IT administrators and end users, this method has its advantages but also has disadvantages. In this article, we will explore the significance and impact of this coexistence model.

Recommended: Exchange Server 2010 enterprise mail system

Advantages of Exchange coexistence inside and outside

Hosting Exchange within an organization has the following advantages:

Microsoft managed Exchange has the following advantages:

The following describes these advantages in detail:

Hosted Exchange: full control and better performance

1. frequently Used Email recipients: Most of the Email recipients sent by users are their colleagues who usually have the same email server or local network, mailing in the same enterprise intranet ensures faster delivery speed.

2. less bandwidth: Based on your mail usage model, hosted Exchange means less WAN bandwidth.

3. Confidential data is stored inside the network: hosting Exchange within the enterprise ensures that confidential emails between colleagues are not leaked.

4. The maintenance period is transparent.

5. IT and management personnel need to know what happened to the IT infrastructure. If outsourcing services are used, we can only learn the situation through the reports provided by the service provider, and the downtime cannot be controlled by the user.

External hosted Exchange: services managed by experts

1. Lower costs: hardware redundancy, data center redundancy, and superb management support are available at a fraction of the cost, and you do not need to install or maintain these infrastructures yourself.

2. extremely secure: Microsoft's data center is equipped with a layer-7 in-depth defense system, from the physical layer to the network layer, and then to the application layer, ensuring that each layer is protected.

3. predictable budget: You know the annual cost, and you don't have to worry about upgrading the hardware. Managers can predict the appropriate budget for key applications.

4. redundancy against natural disasters: Microsoft has the ability to ensure that customers' data is replicated to multiple data centers around the world. Even in the event of an earthquake in a certain place, it can also ensure the security of customers' data, this redundancy level cannot be implemented by any enterprise.

Disadvantages of Exchange coexistence

Both internal deployment and external hosting have their own advantages, but when you use them together, not only will the cost increase, but also there are some drawbacks:

1. Increased costs: organizations not only pay for local Exchange deployment, but also pay for hosted infrastructure, which is equivalent to two fees. Usually, this will cause CFO's attention and dissatisfaction.

2. increased management difficulty: There is only one way to manage Microsoft's online services: record support tickets. If you encounter problems, you need to record a support ticket to seek help from Microsoft's online support, as a result, you have both Microsoft online services and local services, and the workload of IT staff has increased exponentially because they need to simultaneously manage local and Microsoft online service support tickets.

3. more complex: coexistence means that two different systems should be integrated. If the bridge server copies emails from the local server to the remote server's server, the email will be affected, managing such infrastructure requires IT staff to be familiar with the operating mechanism of the mail infrastructure.

When do they need to coexist?

Scenario 1: Remote staff, local IT Management

My sales team is always out, most of their work is not done in the office, on the other hand, my administrative and administrative staff have been working in the office.

This situation is suitable for the coexistence mode. Your sales team can directly connect to Microsoft Exchange Online, reducing the WAN requirements of the office network. At the same time, your office users can connect to the Local Exchange Server, if emails are sent between internal employees, the speed will be more guaranteed.

Scenario 2: Headquarters with multiple branches

Our headquarters has 500 users and many branches. Each branch has no more than 10 users.

In terms of cost, it is best to adopt the coexistence mode because it is meaningless for users of branches to directly connect to the Headquarters server to send and receive emails, this will only increase the WAN bandwidth requirements of the headquarters, and purchasing additional Exchange servers for each branch will greatly increase costs. In any case, this method will not be adopted.

Scenario 3: No remote users or branches in a large headquarters

Our headquarters has 50 users all under the same roof.

This situation is not suitable for coexistence, either it is completely hosted by the enterprise, or all use BPOS.

Summary

There are advantages and disadvantages of coexistence. The mode used is always related to money. Please compare it with the three scenarios described above and calculate the cost based on your actual situation, ultimately, the most appropriate solution is determined at the root cost.

If your situation is special, I wonder if it is suitable for the coexistence mode. Please submit your ideas!

Source: http://www.enterprisenetworkingplanet.com/netos/article.php/3924986/Keep+Exchange+In-House+and+in+the+Cloud+With+Coexistence.htm

Original article name: Keep Exchange In-House and in the Cloud With Coexistence

Author: JabezGan

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