70-663 · Question #242
Your network contains an Active Directory forest named contoso.com and two Active Directory sites named Site1 and Site2. You plan to deploy an Exchange Server 2010 Service Pack 1 (SP1) organization…
The correct answer is B. a database availability group (DAG). Before we continue, we need to discuss an important design consideration regarding the load balancing of the Client Access Server role. In the configuration presented above, the Client Access Server role is coexisting on the same servers as the Mailbox server role. Since the…
Question
Your network contains an Active Directory forest named contoso.com and two Active Directory sites named Site1 and Site2. You plan to deploy an Exchange Server 2010 Service Pack 1 (SP1) organization. An independent consultant recommends a design for the Exchange Server 2010 SP1 deployment as shown in the following table. You are evaluating the implementation of a Network Load Balancing cluster on the Exchange servers. You need to identify which potential Exchange server configuration will prevent the implementation of the Network Load Balancing cluster. What should you identify?
Exhibit
Options
- ADNS round robin on DC1 and DC2
- Ba database availability group (DAG)
- Can activation preference for a database
- Dshadow redundancy
- EEdgeSync synchronization
- Fa single copy cluster (SCC)
- GEdge Transport server cloned configuration
- Hlocal continuous replication (LCR) on EX1, EX2, EX3, and EX4
- JDatacenter Activation Coordination (DAC) mode
How the community answered
(29 responses)- A3% (1)
- B72% (21)
- F7% (2)
- G14% (4)
- J3% (1)
Explanation
Before we continue, we need to discuss an important design consideration regarding the load balancing of the Client Access Server role. In the configuration presented above, the Client Access Server role is coexisting on the same servers as the Mailbox server role. Since the mailbox servers are part of a DAG, which itself uses Windows Failover Clustering, it is not possible to implement Windows Network Load Balancing (WNLB) as the high availability mechanism for the Client Access Server role. As explained in the Exchange 2010 product documentation, under the section titled "Two-member DAG in Single Datacenter/Active Directory Site", this is because WNLB and Windows Failover Clustering cannot be installed on the same server. Therefore, in this particular configuration, an external load balancing solution will be required, although that particular facet of configuration is outside the scope of this article.
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