Azure subscription and service limits, quotas, and constraints

Overview

This document specifies some of the most common Microsoft Azure limits. This does not currently cover all Azure services. Over time, these limits will be expanded and updated to cover more of the platform.

[AZURE.NOTE] If you want to raise the limit above the Default Limit, you can open an online customer support request at no charge. The limits cannot be raised above the Maximum Limit value in the tables below. If there is no Maximum Limit column, then the specified resource does not have adjustable limits.

Limits and the Azure Resource Manager

It is now possible to combine multiple Azure resources in to a single Azure Resource Group. When using Resource Groups, limits that once were global become managed at a regional level with the Azure Resource Manager. For more information about Azure Resource Groups, see Azure Resource Manager overview.

In the limits below, a new table has been added to reflect any differences in limits when using the Azure Resource Manager. For example, there is a Subscription Limits table and a Subscription Limits - Azure Resource Manager table. When a limit applies to both scenarios, it is only shown in the first table. Unless otherwise indicated, limits are global across all regions.

[AZURE.NOTE] It is important to emphasize that quotas for resources in Azure Resource Groups are per-region accessible by your subscription, and are not per-subscription, as the service management quotas are. Let's use core quotas as an example. If you need to request a quota increase with support for cores, you need to decide how many cores you want to use in which regions, and then make a specific request for Azure Resource Group core quotas for the amounts and regions that you want. Therefore, if you need to use 30 cores in West Europe to run your application there; you should specifically request 30 cores in West Europe. But you will not have a core quota increase in any other region -- only West Europe will have the 30-core quota. As a result, you may find it useful to consider deciding what your Azure Resource Group quotas need to be for your workload in any one region, and request that amount in each region into which you are considering deployment. See troubleshooting deployment issues for more help discovering your current quotas for specific regions.

Service-specific limits

Subscription limits

[AZURE.INCLUDE azure-subscription-limits]

Subscription limits - Azure Resource Manager

The following limits apply when using the Azure Resource Manager and Azure Resource Groups. Limits that have not changed with the Azure Resource Manager are not listed below. Please refer to the previous table for those limits.

[AZURE.INCLUDE azure-subscription-limits-azure-resource-manager]

Resource Group limits

[AZURE.INCLUDE azure-resource-groups-limits]

Virtual Machines limits

Virtual Machine limits

[AZURE.INCLUDE azure-virtual-machines-limits]

Virtual Machines limits - Azure Resource Manager

The following limits apply when using the Azure Resource Manager and Azure Resource Groups. Limits that have not changed with the Azure Resource Manager are not listed below. Please refer to the previous table for those limits.

[AZURE.INCLUDE azure-virtual-machines-limits-azure-resource-manager]

DNS limits

[AZURE.INCLUDE dns-limits]

Storage limits

For additional details on storage account limits, see Azure Storage Scalability and Performance Targets).

Storage Service limits

[AZURE.INCLUDE azure-storage-limits]

Virtual Machine disk limits

[AZURE.INCLUDE azure-storage-limits-vm-disks]

See Virtual machine sizes for additional details.

Standard storage accounts

[AZURE.INCLUDE azure-storage-limits-vm-disks-standard]

Premium storage accounts

[AZURE.INCLUDE azure-storage-limits-vm-disks-premium]

Storage Resource Provider limits

[AZURE.INCLUDE azure-storage-limits-azure-resource-manager]

Cloud Services limits

[AZURE.INCLUDE azure-cloud-services-limits]

App Service limits

The following App Service limits include limits for Web Apps, Mobile Apps, API Apps, and Logic Apps.

[AZURE.INCLUDE azure-websites-limits]

Scheduler limits

[AZURE.INCLUDE scheduler-limits-table]

Batch limits

[AZURE.INCLUDE azure-batch-limits)]

BizTalk Services limits

The following table shows the limits for Azure Biztalk Services.

[AZURE.INCLUDE biztalk-services-service-limits]

DocumentDB limits

[AZURE.INCLUDE azure-documentdb-limits]

Quotas listed with an asterisk (*) can be adjusted by contacting Azure support.

Mobile Engagement limits

[AZURE.INCLUDE azure-mobile-engagement-limits]

Search limits

Pricing tiers determine the capacity and limits of your search service. Tiers include:

Free multi-tenant service, shared with other Azure subscribers, intended for evaluation and small development projects.
Basic provides dedicated computing resources for production workloads at a smaller scale, with up to three replicas for highly available query workloads.
Standard (S1, S2, S3, S3 High Density) is for larger production workloads. Multiple levels exist within the standard tier so that you can choose a resource configuration for specific scenarios.

Limits per subscription

[AZURE.INCLUDE azure-search-limits-per-subscription]

Limits per search service

[AZURE.INCLUDE azure-search-limits-per-service]

For more granular information about other limits, including document size, queries per second, keys, requests, and responses, see Service limits in Azure Search.