GregLab | Exam Prep

Storage resilience

Core

Azure Storage redundancy

LRS, ZRS, GRS, RA-GRS, GZRS, and RA-GZRS durability choices.

Key points

  • LRS and ZRS protect the primary region at different physical boundaries.
  • GRS and GZRS add an asynchronous secondary-region copy.
  • RA variants expose the secondary endpoint for reads before failover.

Best-known use cases

  • Protect data from availability-zone failure.
  • Maintain a geo-replicated copy with optional secondary reads.

What candidates often confuse it with

  • LRS vs ZRS: one datacenter boundary vs multiple zones.
  • Object replication vs redundancy: selected block-blob copies vs platform account durability.

Key takeaway

Select redundancy by required local, zonal, regional, and normal secondary-read behavior.

Related services

  • Blob object replication

Relevant exam tasks

  • D2.2.S2 — Configure Azure Storage redundancy
  • D2.2.S3 — Configure object replication

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Free Microsoft Certified: Azure Administrator Associate prep

Build focused AZ-104 quizzes from skill areas, topics, and product references.

Practice with exam-style multiple-choice and multiple-response questions, score breakdowns, explanations, and a compact reference for this lane's official exam domains.

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Exam Weights

Exam snapshot

AZ-104 at a glance

Level
Intermediate
Duration
100 minutes
Questions
No fixed live question count published
Formats
No guaranteed question-type mix
Scoring
1–1,000 scaled score; 700 minimum passing score

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Mode

Exam fidelity: Microsoft does not publish a fixed live question count or guarantee a question-type mix for AZ-104. This lane counts multiple-choice and multiple-response items as exam-style practice. Ordering, matching, and case-study items are supplemental site exercises and do not count toward exam-style accuracy. Practice percentages do not reproduce Microsoft's scaled scoring, and difficulty labels describe this site's Intermediate-level scenario complexity rather than a Microsoft-published question rating.

Reference

AZ-104 topics and reference map

Study links

AZ-104 resources

Official Microsoft resources

AZ-104 official study guide

The live Microsoft guide with the skills-measured date, domain ranges, and detailed objectives.

Azure Administrator Associate certification

Official certification overview, assessment duration, practice assessment, exam sandbox, and scheduling path.

AZ-104T00 Microsoft Azure Administrator course

Official instructor-led course and training path for Azure administrators preparing for AZ-104.