Azure Disk Storage

High-performance, highly durable block storage for Azure Virtual Machines

Choose the right disk storage for your performance and price needs

Designed to be used with Azure Virtual Machines, Azure Disk Storage offers high-performance, highly durable block storage for your mission- and business-critical applications. Choose from four disk storage options-Ultra Disk Storage, Premium SSD, Standard SSD, and Standard HDD-to optimize costs and performance for your workload needs. Achieve sub-millisecond latency with high performance for throughput and transaction-intensive workloads such as SAP HANA, SQL Server, and Oracle®.

Cost-effective storage

Built-in bursting capabilities on smaller disk sizes to handle unexpected traffic and process batch jobs cost-effectively

Unmatched resiliency

0 percent annual failure rate for consistent enterprise-grade durability

Seamless scalability

Dynamic scaling of disk performance on Ultra Disk Storage without disruption

Built-in security

Automatic encryption to help protect your data using Microsoft-managed keys or your own

Maximize your investments and business impact

Optimize costs and get the precise storage you need for your workloads. Disk options come in sizes from 4 GB to 64 TB at a variety of price points and performance characteristics. Lower your total cost of ownership by reserving disk storage in advance. SQL Server on Azure VMs with Azure Disk Storage delivers better price-performance—up to 3.6 times faster and 84 percent cheaper than AWS EC21.

Ensure business continuity and minimize disruptions

Run business-critical applications confidently with disk storage designed for 99.999 percent availability and integrated with availability sets and availability zones to avoid costly downtimes. Azure offers 0 percent annualized failure rate durability and a single-instance service-level agreement of 99.9 percent availability. Minimize disruption to your business with support from Azure Backup and Azure Site Recovery.

Scale easily and quickly to meet business needs

Get the performance and capacity you need, and scale up from gigabytes to petabytes of storage. Achieve high performance even at low storage capacities - Ultra Disk Storage offers the flexibility to configure your IOPS, throughput, and capacity independently. Create and manage disks by simply selecting the disk type and size.

Help protect your most valuable data

Restrict access to your data by using Azure Private Link to allow import and export only from your private Azure virtual network. Manage and control access to your data by assigning specific permissions with Azure role-based access control (RBAC).

Use cases and workloads

Relational databases

Scale to meet your performance needs for handling top-tier databases such as SQL Server, Oracle, and SAP HANA.

NoSQL databases

Achieve consistent low latency for latency-sensitive NoSQL databases such as MongoDB, Cassandra, and CouchDB.

Backup and disaster recovery

Minimize disruptions, lower costs, and reduce time spent on backup and recovery with point-in-time snapshots and solutions built by Microsoft partners.

Clustered applications

Easily migrate your on-premises Windows- and Linux-based clustered or high-availability applications to Azure. Run your most demanding enterprise applications—such as clustered databases, parallel file systems, persistent containers, and machine learning applications—in the cloud.

Containerized workloads

Take advantage of high-performance, low-latency block storage for mission-critical stateful applications running in Kubernetes.

Access more capabilities through Microsoft partners

Tap into a rich partner ecosystem offering a wide range of solutions for database migration, backup, and disaster recovery. Microsoft partners use the unique REST API support capability in Disk Storage to build solutions at lower costs.

Oracle Database

Enhanced security and compliance

Get the disk storage you need at competitive prices

Choose from four types of disks—Ultra Disk Storage, Premium SSD, Standard SSD, and Standard HDD—and use multiple disks with each VM. Use the pricing calculator to configure and estimate the cost of your disk storage.

See Disk Storage pricing

Trusted by companies of all sizes

"Using the Azure Ultra Disk Storage managed disk service, we can provide higher performance for more customers at the same time, which helps us meet our operational cost reduction targets."

Marco Montesi, CloudOps Software Engineer, TeamSystem
Team System

"Our tests with Azure Ultra Disk Storage have far surpassed our current production system—up to four times our current workload capacity. As a healthcare organization, we are breaking down barriers with Ultra Disk Storage and the M-series virtual machines."

Matt Douglas, Chief Enterprise Architect, Sentara Healthcare
Sentara Healthcare

"Ultra Disk Storage enabled SEGA to seamlessly migrate from our on-premises datacenter to Azure and take advantage of flexible performance controls."

Takaya Segawa, General Manager/Creative Officer, SEGA

"With Ultra Disk Storage, we achieved consistent sub-millisecond latency at high IOPS and throughput levels on a wide range of disk sizes. Ultra Disk Storage also allows us to fine-tune performance characteristics based on the workload."

Amit Patolia, Storage Engineer, Devon Energy

Azure Disk Storage updates, blogs, and announcements

Frequently asked questions about Disk Storage

  • Data disks on Ultra Disk Storage hold up to 64 TB per disk. Data disks on Premium SSD, Standard SSD, and Standard HDD hold up to 32 TB. The number of data disks you can use depends on the size of the virtual machine.
  • Each of the four disk types differs in performance characteristics, so you can configure your storage based on your application needs. Learn about performance guidelines for Ultra Disk Storage or Premium SSDs.
  • After you purchase a reservation, a discount is automatically applied to the disk resources that match the terms of your reservation. The reservation discount applies to disk SKUs only. Learn more about reservation discounts.
  • Bursting is enabled by default on new and existing deployments of the supported virtual machines and disks—no additional steps required. Learn more about bursting.

1Price-performance claims based on data from a study commissioned by Microsoft and conducted by GigaOm in February 2020. The study compared price performance between SQL Server 2019 Enterprise Edition on Windows Server 2019 Datacenter edition in Azure E32as_v4 instance type with P30 Premium SSD Disks and the SQL Server 2019 Enterprise edition on Windows Server 2019 Datacenter edition in AWS EC2 r5a.8xlarge instance type with General Purpose (gp2) volumes. Benchmark data is taken from a GigaOm Analytic Field Test derived from a recognized industry standard, TPC Benchmark™ E (TPC-E). The Field Test does not implement the full TPC-E benchmark and as such is not comparable to any published TPC-E benchmarks. Prices are based on publicly available US pricing in West US for SQL Server on Azure Virtual Machines and Northern California for AWS EC2 as of January 2020. The pricing incorporates three-year reservations for Azure and AWS compute pricing, and Azure Hybrid Benefit for SQL Server and Azure Hybrid Benefit for Windows Server and License Mobility for SQL Server in AWS, excluding Software Assurance costs. Actual results and prices may vary based on configuration and region.

Get started with Azure Disk Storage