Pure Storage FlashBlade Architect Professional FAAA_004 Question # 17 Topic 2 Discussion
FAAA_004 Exam Topic 2 Question 17 Discussion:
Question #: 17
Topic #: 2
A potential customer has a use case where they need to use a stretched cluster for high availability and also require a third copy of their data in a remote geographic location.
Which replication method should be recommended?
A.
CloudSnap to an offload target
B.
Fan-out asynchronous snapshot replication
C.
ActiveDR with periodic snapshot replication
D.
ActiveCluster with asychronous snapshot replication
The customer requires a storage solution that supports astretched cluster for high availabilityand also maintains athird copy of their data in a remote geographic location. The best replication method to recommend isActiveCluster with asynchronous snapshot replication.
Why This Matters:
ActiveCluster:
ActiveCluster provides synchronous replication between two sites within a stretched cluster, ensuring zero RPO and near-zero RTO for high availability.
It is ideal for scenarios where applications require continuous access to data across two locations.
Asynchronous Snapshot Replication:
Asynchronous replication extends the disaster recovery strategy by replicating snapshots to a third site. This ensures an additional layer of protection against regional failures.
Why Not the Other Options?
A. CloudSnap to an offload target:
CloudSnap is used to offload snapshots to cloud storage (e.g., AWS S3 or Azure Blob). While it satisfies the requirement for a third copy, it does not integrate with ActiveCluster for high availability in a stretched cluster.
B. Fan-out asynchronous snapshot replication:
Fan-out replication involves sending snapshots to multiple targets asynchronously. However, it does not provide the synchronous replication required for a stretched cluster.
C. ActiveDR with periodic snapshot replication:
ActiveDR is designed for asynchronous replication and failover/failback scenarios but does not support synchronous replication for a stretched cluster.
Key Points:
ActiveCluster:Ensures high availability with synchronous replication in a stretched cluster.
Async Replication:Adds a third-site replication target for comprehensive disaster recovery.
Integrated Solution:Combines high availability and disaster recovery into a single architecture.
References:
Pure Storage FlashArray Documentation: "ActiveCluster with Async Replication"
Pure Storage Whitepaper: "Disaster Recovery Strategies with FlashArray"
Pure Storage Knowledge Base: "Using Protection Groups in Stretched Pods"
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