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SG0-001 · Question #292

A customer's database environment includes remote synchronous mirroring across a DWDM link. Which two (2) business management requirements will be met by the implementation? (Choose two.)

The correct answer is C. continuity D. availability. Implementing remote synchronous mirroring across a DWDM link primarily fulfills business requirements for continuity and availability by providing a real-time, disaster-resilient replica of the database.

Storage Functionality

Question

A customer's database environment includes remote synchronous mirroring across a DWDM link. Which two (2) business management requirements will be met by the implementation? (Choose two.)

Options

  • Acost
  • Bservice
  • Ccontinuity
  • Davailability
  • Econfiguration

How the community answered

(24 responses)
  • A
    4% (1)
  • B
    8% (2)
  • C
    88% (21)

Why each option

Implementing remote synchronous mirroring across a DWDM link primarily fulfills business requirements for continuity and availability by providing a real-time, disaster-resilient replica of the database.

Acost

Synchronous mirroring, especially with a dedicated DWDM link, is typically a high-cost solution due to infrastructure, licensing, and operational expenses, so it does not meet a requirement for low cost.

Bservice

"Service" is a very broad term; while mirroring contributes to service quality by improving continuity and availability, "service" itself isn't a specific requirement met directly by the implementation of mirroring.

CcontinuityCorrect

Remote synchronous mirroring provides business continuity by ensuring that a complete, up-to-date copy of the database is immediately available at a remote site, allowing for rapid failover in case of a disaster at the primary location.

DavailabilityCorrect

Synchronous mirroring across a DWDM link provides high availability by maintaining an identical, real-time copy of data, minimizing downtime and data loss during outages or disasters, ensuring the database remains accessible.

Econfiguration

While configuration is required for the implementation, the mirroring itself does not "meet" a business management requirement of "configuration"; configuration is a task, not a business outcome or goal.

Concept tested: Synchronous replication benefits for databases

Source: https://learn.microsoft.com/en-us/sql/sql-server/failover-clusters/windows/overview-of-always-on-availability-groups-sql-server

Topics

#Synchronous mirroring#Remote replication#Business continuity#High availability

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