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AZ-104 Azure - Configuring blobk object replication

Object replication asynchronously copies blocks of blobs between storage accounts

    • Requires source and destination storage accounts 
    • Requires versioning and change feed
    • Support cross-tenant replication

Diagram showing how object replication works

 

  • Minimize latency - reduce latency for read requests.
  • Increased efficiency - Processing block blob in different regions.
  • Data distribution - Processing and analyzing data in one location that replicate to other regions.
  • Cost Optimization -moving replicate data to the archive tier can reduce cost.

 

  • Versioning: Versioning must be enabled on both the source and desalination accounts to perform replication
  • Change feed: Change feed must be enabled on the source account. Azure storage monitors the $blobchangefeed to advise replication.
  • Cross subscription and azure AD: Object replication is supported across subscriptions and azure AD tenants
  • Replication Policy: A Storage account can be a source for up to two destination accounts. Each policy supports only a single pairing using a policy ID.