What is Blob Storage
Use Blob Storage when you have large amounts of unstructured data to store in the cloud.
You can use Blob storage to store content such as:
- Media and Social data such as photos, videos, music, and blogs
- Backups of files, computers, databases, and devices
- Images and text for web applications
- Configuration data for cloud applications
- Big data, such as web logs and other large datasets
Every blob is organized into a container. Containers also provide a useful way to assign security policies to groups of objects.
A storage account can contain any number of containers, and a container can contain any number of blobs, up to the 500 TB capacity limit of the storage account.
Blob storage offers two types of blobs, block blobs and page blobs (disks).
Block blobs are optimized for streaming and storing cloud objects, and are a good choice for storing documents, media files, backups etc.
A block blob can be up to 200 GB in size. Page blobs are optimized for representing IaaS disks and supporting random writes, and may be up to 1 TB in size.
An Azure virtual machine network attached IaaS disk is a VHD stored as a page blob.