AZ-305 Practice Question 46: On-Premises DR to Azure
Microsoft Azure Solutions Architect Expert (AZ-305) · Test 5 · question 6 of 10
An engineering firm runs 120 VMware virtual machines in a single on-premises datacenter and has no second site. After an insurer's review, the firm must be able to bring the estate up in Azure when the datacenter is lost, and the design must:
- produce application-consistent recovery points, not just crash-consistent ones, - bring a multi-tier application up in a defined order rather than all at once, - allow a full rehearsal every quarter that does not interrupt production or pause replication, - avoid building and paying for a second datacenter.
What should you recommend?
Show answer and explanation
Answer:
Site Recovery replicates workloads running on physical and virtual machines from a primary site to a secondary location, and replicating on-premises VMs to Azure is documented as eliminating the cost and complexity of maintaining a secondary datacenter, the firm's last requirement. It provides continuous replication for VMware VMs and supports recovery points with application-consistent snapshots, which capture disk data, memory, and in-flight transactions. Recovery plans let you customize and sequence the failover of multi-tier applications across several VMs, with optional scripts, and disaster recovery drills can be run easily without affecting ongoing replication.
Option A is a backup design being asked to do disaster recovery. A nightly agent backup gives a recovery point up to 24 hours old, provides no ordered failover of an application, and restoring 120 servers from backup is a bulk data operation with no rehearsed, non-disruptive drill.
Option C solves a different problem. Azure Migrate: Server Migration moves workloads to Azure permanently; cutting over is a migration, not a standby capability, and afterwards the on-premises servers are stale copies rather than a protected production estate.
Option D meets the technical requirements and breaks the commercial one. It is precisely the second datacenter (with its own hardware, licensing, power, and staff) that replicating to Azure is meant to avoid.
Reference: About Azure Site Recovery