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Zorluk: OrtaDesign Compute High Availability

An insurance firm is deploying a core claims auditing application on Azure Virtual Machines. The application requires a virtual machine uptime SLA of at least 99.99%99.99\% to meet regulatory compliance. The auditing process runs continuously and must not be interrupted by eviction. Which compute topology should you recommend to meet the SLA and operational requirements?

  1. Deploy the virtual machines across two or more Availability Zones in the Azure region.Cevap
  2. B
    Deploy the virtual machines as Azure Spot Virtual Machines distributed across multiple Availability Zones.
  3. C
    Deploy all virtual machines within a single Availability Zone using an Availability Set.
  4. D
    Deploy all virtual machines in a single Availability Zone with Premium SSD managed disks.

Cevap

Deploy the virtual machines across two or more Availability Zones in the Azure region.
Deploying the virtual machines across two or more Availability Zones in the Azure region is the only configuration that provides a 99.99%99.99\% uptime SLA for Azure Virtual Machines, satisfying the high availability and compliance demands of the application.

Adım Adım Çözüm

1
Analyze the SLA requirement.
The application requires an uptime SLA of at least 99.99%99.99\%.
This establishes the minimum infrastructure standard needed, as only specific Azure configurations can guarantee a 99.99%99.99\% SLA.
2
Evaluate Azure SLA guarantees for compute topologies.
Deploying VMs across two or more Availability Zones provides a 99.99%99.99\% SLA, whereas Availability Sets provide a 99.95%99.95\% SLA and single-instance VMs provide up to 99.9%99.9\% SLA.
Determining which deployment strategies meet or exceed the 99.99%99.99\% target narrows the valid architectural options.
3
Evaluate the workload eviction constraint.
Spot VMs must be ruled out because they are subject to eviction and carry no SLA.
The scenario specifies that the process runs continuously and must not be interrupted by eviction.

Anahtar Kavram

Azure Virtual Machine High Availability SLA Requirements
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Konular

Design Compute High Availability

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