AZ-900 Certification Notes

Chapter 6.1 - Blob

Blob means "Binary Large Object"

Storage Levels

These blobs of data are stored in containers, inside the storage account. There are three layers to Blob storage: storage account, container, and then blob.

A blob container is like a mixed bag of items that're all labeled in a sensible manner.

Scenarios

• Images
  • Store various sizes and formats as a single image storage
• All Types
  • Store any kind of files and have distributed access through the Azure cloud storage
• Streaming
  • Stream audio and video directly from your blob storage
• Log files
  • Write to log files regardless of size and frequency
• Data Store
  • Store any kind of data at scale, such as for archiving, backup, restore and disaster recovery

Blob Types

• Block
  • Store text and binary data up to 4.7TB. Made up of individually managed blocks of data
• Append
  • Block blobs that are optimized for append operations. Works well for logging where data is constantly appended
• Page
  • Store files up to 8TB. Any part of the file could be accessed at any time, for example a virtual hard drive

Pricing Tiers

• Hot
  • Frequently accessed files. Lower access time and higher access costs
• Cool
  • Lower storage costs and higher access times. Data remains here for at least 30 days
• Archive
  • Lowest costs and highest access times