Microsoft has expanded the Southeast Asia Azure Region in Singapore. As part of this expansion, Microsoft Azure Availability Zones are now generally available in the Southeast Asia Azure Region.
Each Availability Zone is made up of one or more data centres equipped with independent power, cooling and networking, said Patrik Bihammar, Cloud & Enterprise Lead, Microsoft Singapore, in a blog post. Availability Zones have the added benefit of offering local data residency with high availability.
Bihammar explained that there is a minimum of three separate zones in all enabled regions for resiliency. "The physical separation of Availability Zones within a region protects applications and data from data centre failures. With Availability Zones, Azure offers industry-leading 99.99% virtual machine uptime service level agreement (SLA)," he said.
Microsoft supports business continuity with Azure region pairs. Each Azure region* is paired with another region within the same
geography, to make a regional pair. Across the
region pairs Azure will serialises platform updates (planned maintenance)
so that only one region in the pair is updated at a time. In addition,
in the event of an outage affecting multiple regions, at least one region
in each pair will be prioritised for recovery.
Bihammar noted that application architectures can be built using a combination of Availability Zones with Azure region pairs for high availability and geographic disaster recovery protection.
*Brazil
South is the only region which is paired with a region outside its geography.
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