AZ-104 Certification Notes

Chapter 8.9 - RA-GRS RA-GZRS

Replication and Data Redundancy

Redundancy in the Secondary Region with Read Access

• Data is replicate synchronously to primary region

• Your data will be "in-sync" with your primary and you'll have read access

• Read-Access Geo Redundant Storage (RA-GRS)

  • Copies data synchronously in primary region
  • Copies data synchronously to another region
  • 99.99% (16 nines) of durability

• Read-Access Geo-Zone-redundant storage (RA-GZRS)

  • Copies data synchronously across 3 AZs in a physical region
  • Copies data synchronously to another region
  • 99.99% (16 nines) of durability

Practice Quiz

• The Redundancy in the Secondary Region with Read Access Tier allows your data to be “in-sync” with your primary and you’ll have read access.

  • False
  • True

• Which storage tier copies data synchronously across 3 AZs in a physical region, copies data synchronously to another region, and 99.99999999999999% (16 9’s) of durability?

  • Zone-redundant storage (ZRS)
  • Read-Access Geo Redundant Storage (RA-GRS)
  • Read-Access Geo-Zone-redundant storage (RA-GZRS)
  • Geo-Zone-redundant storage (GZRS)

• Which replication type copies data synchronously in the primary region, copies data synchronously to another region, and has 99.99999999999999% (16 9’s) of durability?

  • Read-Access Geo Redundant Storage (RA-GRS)