AZ-104 Certification Notes

Chapter 6.2 - Conceptualizing Azure Blob Storage

Describing Azure Blob Storage

• Blob Storage
  • Azure Blob is a sub-service or sub-resource of Azure Storage (storage accounts)
  • Blob storage is object based and easily accessible from HTTP/REST
  • Store items such as:
    • Image and video files
    • Text files
    • Log files
    • VHD (virtual hard disk) files
  • All of these things store inside of our Azure Blob Storage, inside of a container, which acts like a bucket. And inside of this we have a virtualization prefix that allows it to appear as though it's a file system, but it's actually a flat file structure

Components of Blob Architecture

• Blob Service
  • A sub-service for storage accounts
• Blob Container
  • The container where we storage our blobs
• Blobs
  • The data we storage in our containers

Types of Blobs

• Block Blobs
  • Storing images or videos. Best suited for streaming
• Append Blobs
  • Log files
• Page Blobs
  • Virtual machine disks

Container Access Levels

• Access Control
  • By default, public access to blobs is granted at the storage account level
• Container Access Levels
  • Private (no anonymous access)
  • Blob (anonymous access to blob)
  • Container (anonymous access to container and blobs it contains)

Key Takeaways

• Azure Blob services are:
  • Object-based Storage solution
• Blob Containers
• Flat-File Structure
  • Like a "bucket" that has the appearance of an actual file system