There are two types of storage accounts:
A general-purpose storage account gives you access to Azure Storage services such as Tables, Queues, Files, Blobs and Azure virtual machine disks under a single account. This type of storage account has two performance tiers:
- A standard storage performance tier which allows you to store Tables, Queues, Files, Blobs and Azure virtual machine disks.
- A premium storage performance tier which currently only supports Azure virtual machine disks. See Premium Storage: High-Performance Storage for Azure Virtual Machine Workloads for an in-depth overview of Premium storage.
A Blob storage account is a specialized storage account for storing your unstructured data as blobs (objects) in Azure Storage. Blob storage accounts are similar to your existing general-purpose storage accounts and share all the great durability, availability, scalability, and performance features that you use today including 100% API consistency for block blobs and append blobs. For applications requiring only block or append blob storage, we recommend using Blob storage accounts.
Note
Blob storage accounts support only block and append blobs, and not page blobs.
Blob storage accounts expose the Access Tier attribute which can be specified during account creation and modified later as needed. There are two types of access tiers that can be specified based on your data access pattern:
- A Hot access tier which indicates that the objects in the storage account will be more frequently accessed. This allows you to store data at a lower access cost.
- A Cool access tier which indicates that the objects in the storage account will be less frequently accessed. This allows you to store data at a lower data storage cost.
If there is a change in the usage pattern of your data, you can also switch between these access tiers at any time. Changing the access tier may result in additional charges. Please see Pricing and billing for Blob storage accounts for more details.
For more details on Blob storage accounts, see Azure Blob Storage: Cool and Hot tiers.
Before you can create a storage account, you must have an Azure subscription, which is a plan that gives you access to a variety of Azure services. You can get started with Azure with a free account. Once you decide to purchase a subscription plan, you can choose from a variety of purchase options. If you’re an MSDN subscriber, you get free monthly credits that you can use with Azure services, including Azure Storage. See Azure Storage Pricing for information on volume pricing.
To learn how to create a storage account, see Create a storage account for more details. You can create up to 100 uniquely named storage accounts with a single subscription. See Azure Storage Scalability and Performance Targets for details about storage account limits.