Azure Disks Storage pricing

Reliable, economical cloud storage for data big and small

Azure has five types of storage: Blobs, Files, Disks, Tables and Queues. See how they work

Your total cost depends on how much you store, the volume and type of storage transactions and outbound data transfers, and which data redundancy option you choose. See how they compare in the “Data Redundancy Options” section.

Premium Unmanaged Disks and page blobs

Premium Unmanaged Disks are high-performance Solid State Drive (SSD)-based storage devices designed to support I/O intensive workloads with significantly high throughput and low latency. With Premium Unmanaged Disks, you can provision a persistent disk and configure its size and performance characteristics.

The total cost of Premium Unmanaged Disks depends on the size and number of the disks, and will be affected by the number of outbound data transfers. These disk sizes provide different input/output operations per sec (IOPs), throughput caps and monthly price per GB. You choose the option that best meets your required storage size, IOPs and throughput. Attach several persistent disks to a virtual machine and you can configure up to 64 TB of storage per virtual machine, and achieve 80,000 input/output operations per second, and 1,600 MB-per-second disk throughput per virtual machine at less than one millisecond latency for read operations. Premium Unmanaged Disks are supported by DS-series, DSv2-series, FS-series and GS-series virtual machine sizes, which are specifically targeted towards Premium Disks.

Snapshots are charged at $-/GB per month.

Disk Types P10 P20 P30 P40 P50 P60
Disk Size 128 GB 512 GB 1 TB 2 TB 4 TB 8 TB
Price per month $- $- $- $- $- $-
IOPs per disk 500 2,300 5,000 7,500 7,500 7,500
Throughput per disk 100 MB/second 150 MB/second 200 MB/second 250 MB/second 250 MB/second 250 MB/second
There are no transaction costs for Premium Disks.

* Azure doesn’t support attaching P60 as a disk to virtual machines yet. P60 will only be supported as page blobs accessible through REST.

Standard Unmanaged Disks and page blobs

Standard Disks use Hard Disk Drive (HDD)-based storage media. They are best suited for dev/test and other infrequent access workloads that are less sensitive to performance variability.

The total cost of Standard Unmanaged Disk storage depends on the size and number of disks, the number of transactions and the number of outbound data transfers.

Storage Capacity LRS GRS RA-GRS
First 1 TB/month $- per GB $- per GB $- per GB
Next 49 TB (1 to 50 TB)/month $- per GB $- per GB $- per GB
Next 450 TB (50 to 500 TB)/month $- per GB $- per GB $- per GB
Next 500 TB (500 to 1,000 TB)/month $- per GB $- per GB $- per GB
Next 4,000 TB (1,000 to 5,000 TB)/month $- per GB $- per GB $- per GB
Over 5,000 TB/month Contact us Contact us Contact us

Access prices

We charge $- per 10,000 transactions for Standard Disks and page blobs. Any type of operation against the storage is counted as a transaction, including reads, writes and deletes.

Import/Export

Transfer large amounts of data to and from Azure using hard disk drives. Learn more

Data redundancy options

locally redundant storage Makes multiple synchronous copies of your data within a single data centre.
zone redundant storage Stores three copies of data across multiple data centres within or across regions. For Block Blobs only.
geographically redundant storage Same as locally redundant storage, plus multiple asynchronous copies to a second data centre hundreds of miles away.
read-access geographically redundant storage Same as geographically redundant storage, plus read access to the secondary data centre.

For more details on redundancy options and how they can be used for high availability, please refer to the Azure Storage replication. Please note that not all redundancy types are available for all storage types.

Support and SLA

  • Free billing and subscription management support.
  • Flexible support plans starting at $29/month. Shop for a plan
  • Guaranteed 99.9% or greater availability (excludes preview services). Read the SLA

FAQs

General

  • Yes. Storage capacity is billed in units of the average daily amount of data stored, in gigabytes (GB), over a monthly period. For example, if you consistently used 10 GB of storage for the first half of the month, and none for the second half of the month, you would be billed for your average usage of 5 GB of storage.

  • Storage accounts are set up to be geographically redundant by default. You can change these settings to read-access geographically redundant or locally redundant through the Microsoft Azure classic portal or the service management API. You can also check the status on the portal for using the service management API.

  • Storage accounts will be charged for a minimum of 30 days from the time the service is enabled. For example, if read-access geographically redundant storage is activated on 1 May and turned off on 5 May, the storage account will be charged for read-access geographically redundant storage until 30 May. After that, geographically redundant storage pricing would start.

    If read-access geographically redundant storage is activated on 1 May and turned off on 14 June, read-access geographically redundant storage would be charged until 14 June. On 15 June, geographically redundant storage pricing would take effect.

Blob storage

  • A blob storage account is a storage account specialised in storing data as blobs and allows users to specify an access tier based on the frequency of access for the data in that account. General-purpose storage accounts can be used to store blobs, as well as files, disks, tables and queues.

  • No. Block blob prices in general-purpose storage accounts have not changed. See the prices.

  • If you see “Hot”, “Cool” or “Archive” in the resource name, it means that the charge is associated with blob storage accounts. For example, when you see “Standard IO – Cool Block Blob (GB)” in your bill, it means that you are using and being charged for blob storage accounts, while “Standard IO – Block Blob (GB)” is the meter associated with use of block blobs in general-purpose storage accounts.

  • In blob storage accounts, you can set the access tier of a blob as Hot, Cool or Archive. Storage GB pricing increases from Archive to Cool to Hot tiers, and cost of accessing data increases from Hot to Cool to Archive tiers. The Archive and Cool tiers should be used for rarely and infrequently accessed data respectively, with lower availability SLA requirements. If you don’t know the access pattern for your data, we recommend that you start with the Hot tier for at least a month, and then determine whether you can save costs by moving to Cool and Archive storage based on your actual usage.

  • You will be charged for data retrieval when you toggle your blob storage account from Cool to Hot, for example, if you have 100 GB of data in a blob storage account and you toggle that account from Cool to Hot, you will be charged 100 x $0.01 = $1 for data retrieval.

  • No. If you toggle your account from Hot to Cool, you will not be charged for data writes. You are only charged for data writes if you directly write data to your blob storage account with Cool access tiers.

  • When you write data into GRS accounts, that data will be replicated to another Azure region. The Geo-Replication Data Transfer charge is the bandwidth cost of replicating that data to another Azure region.

Disk storage

  • If the empty 100 GB disk is backed by a Premium Storage account, then you'll be charged for a P0 (128 GB) disk. If any other type of storage account is used, then you’ll only be billed for the storage space used to store the data that’s written to the disk, regardless of the allocated disk size.

  • Yes. 99.9% read/write availability also applies to Premium Storage Accounts.

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