An IBM Cloud multizone region (MZR) is designed to enhance the availability, reliability, and resilience of cloud services. It consists of three or more separate, geographically dispersed zones within a single region, which are interconnected through high-speed and low-latency networks.
Multiple Zones for High Availability:In a multizone region, each zone represents a separate data center or availability zone with its own independent power, cooling, and networking. The multiple zones are interconnected, allowing for failover capabilities. If one zone experiences a failure, services can continue to operate in another zone within the same MZR, minimizing downtime and ensuring business continuity.
Resilience and Disaster Recovery:MZRs are specifically designed to offer a higher level of fault tolerance compared to single-zone regions. They provide geographic redundancywithin the same region, meaning that workloads can be replicated across different zones, thereby protecting against zone-level failures.
Interconnected Yet Independent:While the zones within an MZR are interconnected for data replication and low-latency communication, they are also physically and logically separated to prevent a single point of failure from affecting multiple zones.
Comparison with Other Options:
Option A is partially correct but does not fully describe an MZR.
Option B is incorrect because a failure in one zone does not affect all other zones.
Option C is incorrect as it does not specify that an MZR consists of multiple zones within the same geographical region.
References:
IBM Cloud Multizone Regions (MZR) Overview
IBM Cloud Architect Exam Study Guide
IBM Cloud Global Data Center Locations
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