AZ-104 Certification Notes

Chapter 6.3 - Configuring Blob Object Replication

Object Replication
- Object replication asynchronously copies block blobs between storage accounts
  - Requires source and destination storage accounts
  - Requires versioning and change feed
  - Supports cross-tenant replication

Minimized Latency
- Reducing latency for read requests
Increased Efficiency
- Processing block blobs in different regions
Data Distribution
- Processing and analyzing data in one location that replicates to other regions
Cost Optimization
- Moving replicated data to the archive tier can reduce costs

Versioning
- Versioning must be enabled on both the source and destination accounts to perform replication
Cross Subscription and Azure AD
- Object replication is supported across subscriptions and Azure AD tenants
Change Feed
- Change feed must be enabled on the source account. Azure Storage monitors the $blobchangefeed to advise replication
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