Azure vCPU Quotas

Overview

Azure vCPU Quotas are limits set on the number of virtual CPUs (vCPUs) that can be used within a subscription in a specific region. These quotas help manage resource allocation and ensure that resources are used efficiently without exceeding the available capacity.

Core Functionality

• Quota Management: Quotas are based on the total number of cores in use for both allocated and deallocated VMs.
• Subscription-Based: Quotas apply to each subscription in each region.
• Tiered Limits: There are two tiers of quotas, grouped by VM size.
• Deployment Checks: When deploying a VM, it must not breach either tier of the quota. If the quota is breached, the VM will not deploy.
• Usage Monitoring: Usage can be checked via the Azure portal or Azure CLI.

Well-Architected Framework

Operational Excellence

• Automation: Use Azure Automation to monitor and manage vCPU usage, ensuring that quotas are not exceeded.
• Monitoring: Implement Azure Monitor to track vCPU usage and set up alerts for quota breaches.

Security

• Access Control: Use Azure Role-Based Access Control (RBAC) to manage who can view and modify vCPU quotas.
• Compliance: Ensure compliance with organizational policies by regularly reviewing and adjusting vCPU quotas.

Reliability

• Resource Allocation: Plan resource allocation to avoid hitting quota limits, ensuring that critical workloads have the necessary resources.
• Redundancy: Design your architecture to handle potential quota breaches by using redundant instances or fallback strategies.

Performance Efficiency

• Scaling: Use Azure Virtual Machine Scale Sets to efficiently manage vCPU usage and scale resources based on demand.
• Optimization: Continuously monitor and optimize vCPU usage to ensure efficient resource allocation.

Cost Optimization

• Budgeting: Set and manage vCPU quotas to control costs and avoid unexpected expenses.
• Utilization: Regularly review and adjust vCPU quotas to maximize cost savings and resource utilization.

Sustainability

• Resource Efficiency: Use vCPU quotas to ensure efficient use of Azure resources, reducing overall environmental impact.
• Energy Consumption: Monitor and optimize the energy consumption of workloads running within vCPU quotas.

References

• Azure vCPU Quotas Documentation