SG0-001 · Question #318
A company has implemented a stretch cluster between two sites that are 100km apart in conjunction with synchronous data replication. What are two (2) operational benefits of this implementation? (Choo
The correct answer is A. decreased possibility of data inaccessibility D. increased application availability. Implementing a stretch cluster between two sites with synchronous data replication provides high availability and disaster recovery benefits, ensuring continuous operation and data accessibility.
Question
A company has implemented a stretch cluster between two sites that are 100km apart in conjunction with synchronous data replication. What are two (2) operational benefits of this implementation? (Choose two.)
Options
- Adecreased possibility of data inaccessibility
- Bprotection against fabric service failure
- Ceasier to manage SAN configuration
- Dincreased application availability
- Eprotection against ISL failure
How the community answered
(25 responses)- A84% (21)
- B8% (2)
- C4% (1)
- E4% (1)
Why each option
Implementing a stretch cluster between two sites with synchronous data replication provides high availability and disaster recovery benefits, ensuring continuous operation and data accessibility.
Synchronous data replication ensures that data is written to both sites concurrently, meaning that in the event of a primary site failure, the data is immediately available and consistent at the secondary site, thereby decreasing the possibility of data inaccessibility.
Protection against fabric service failure is typically achieved through redundant components and proper design within a single SAN fabric, not directly by a stretch cluster configuration.
A stretch cluster, especially with synchronous replication across a distance, significantly increases the complexity of SAN design, implementation, and ongoing management, making it harder to manage.
A stretch cluster with synchronous replication allows applications to seamlessly failover or continue running from the surviving site during a localized outage or site failure, significantly increasing the overall availability of critical applications.
Protection against ISL (Inter-Switch Link) failure is managed by deploying redundant ISLs and fabric pathing within the SAN, not inherently by the stretch cluster itself, although robust inter-site links are crucial for its operation.
Concept tested: Stretch cluster benefits for disaster recovery
Source: https://learn.microsoft.com/en-us/windows-server/failover-clustering/deploy-stretch-cluster
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