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70-450 · Question #26

You administer SQL Server 2008 instances at three site. All sites share a mission-critical database. The business requirements specify that users at each site must be able to perform the following…

The correct answer is B. Peer-to-Peer replication. To minimize latency, users need a local copy of the database. Failover clustering doesn't provide multiple copies. Database mirroring only supports one destination. Database mirroring and log shipping leave the secondary or secondaries in a restoring state, so data is not…

Design an optimized high availability and disaster recovery solution

Question

You administer SQL Server 2008 instances at three site. All sites share a mission-critical database. The business requirements specify that users at each site must be able to perform the following tasks:

  • Access and modify data on all sites with minimal latency.
  • Minimize data loss in the event of a server failure.

You need to provide a high-availability solution that meets the business requirements. Which solution should you implement?

Options

  • AFailover clustering
  • BPeer-to-Peer replication
  • CAsynchronous database mirroring without a witness server
  • DLog shipping to servers at two of the sites to provide read-only copies of data

How the community answered

(19 responses)
  • A
    5% (1)
  • B
    68% (13)
  • C
    21% (4)
  • D
    5% (1)

Explanation

To minimize latency, users need a local copy of the database. Failover clustering doesn't provide multiple copies. Database mirroring only supports one destination. Database mirroring and log shipping leave the secondary or secondaries in a restoring state, so data is not easily accessible. Peer-to-peer replication is the only viable solution.

Topics

#peer-to-peer replication#multi-site availability#minimal latency#data loss minimization

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