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SG0-001 · Question #289

What two (2) technologies are commonly used in a business continuity plan? (Choose two.)

The correct answer is B. subsytem-based synchronous replication to a remote site C. subsystem-based asynchronous replication to a remote site. Business continuity plans commonly leverage subsystem-based synchronous and asynchronous replication to a remote site to ensure data availability and rapid recovery in case of a disaster.

Storage Functionality

Question

What two (2) technologies are commonly used in a business continuity plan? (Choose two.)

Options

  • Atape backup with restore to a remote site
  • Bsubsytem-based synchronous replication to a remote site
  • Csubsystem-based asynchronous replication to a remote site
  • Dsubsystem-based replication in the same datacenter
  • Evirtual tape library with restore to a remote site

How the community answered

(15 responses)
  • B
    87% (13)
  • D
    7% (1)
  • E
    7% (1)

Why each option

Business continuity plans commonly leverage subsystem-based synchronous and asynchronous replication to a remote site to ensure data availability and rapid recovery in case of a disaster.

Atape backup with restore to a remote site

Tape backup with restore to a remote site is a disaster recovery method but typically has a much higher RTO (Recovery Time Objective) and RPO than replication, making it less suitable for immediate business continuity.

Bsubsytem-based synchronous replication to a remote siteCorrect

Subsystem-based synchronous replication to a remote site provides a real-time copy of data at the secondary location, ensuring near-zero RPO (Recovery Point Objective) and high availability for mission-critical applications by immediately reflecting changes.

Csubsystem-based asynchronous replication to a remote siteCorrect

Subsystem-based asynchronous replication to a remote site provides data redundancy with a small lag, allowing for disaster recovery with a slightly higher RPO than synchronous replication, but typically over longer distances and with less network bandwidth requirements.

Dsubsystem-based replication in the same datacenter

Subsystem-based replication in the same datacenter offers high availability within a datacenter, but it does not protect against a disaster that affects the entire site, which is a core concern for business continuity.

Evirtual tape library with restore to a remote site

Virtual tape library (VTL) with restore to a remote site is similar to physical tape backup in terms of RTO/RPO limitations for business continuity, primarily serving as a backup and archival solution rather than immediate failover.

Concept tested: Business continuity and disaster recovery replication

Source: https://learn.microsoft.com/en-us/azure/site-recovery/site-recovery-overview

Topics

#Business continuity#Disaster recovery#Data replication#Synchronous replication

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