Azure Blob Storage

  • Binary Large Object
  • Object storage solution for the cloud
  • Stores all types of files: image, video, audio, log files backups, etc.

  • Storage Account
    • Unique namespace in Azure for your data
    • If your storage account name is tutorialsdojo, then the default endpoint for Blob storage is: http://tutorialsdojo.blob.core.windows.net
  • Container
    • Organizes a set of blobs that are similar to a directory in a file system.

Blob Types

  • Block 
    • Store binary and text data up to 4.7 TB.
    • Preview larger block blobs up to 190.7 TiB
  • Append 
    • Ideal for logging data from virtual machines
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  • Page
    • Store random-access files up to 8 TB in size
    • Store virtual hard drive (VHD) files

Supported Access Tiers

  • Hot
    • Frequently accessed objects
    • Most cost-effective, while storage costs are higher
    • Default in new Storage Accounts
  • Cool
    • Infrequently accessed data
    • More cost-effective, but higher access cost than hot tier
    • Data remains for at least 30 days
  • Archive
    • Rarely accessed files.
    • Lowest cost for storing data but the highest access cost.
    • Data remains for at least 180 days.
  • Lifecycle Management Policy
    • A lifecycle configuration has a set of rules that define actions that are applied to a group of objects.

    • Enables you to transition your data to the appropriate access tiers.
    • Delete blobs at the end of their lifecycles

Features

  • Versioning
    • Identified by a version ID
    • Enable versioning and restore an earlier version of a blob to recover your data.
    • If you disable the versioning of the blob, it does not delete existing blobs, versions, or snapshots.
  • Snapshots
    • A read-only version of a blob that was taken at a given point in time.
    • The snapshots persist until they are explicitly deleted.
  • Object Replication
    • Copies block blobs asynchronously between a source Storage account and a destination account.
    • A source account can have up to two destination accounts. But there can be no more than two source accounts in the destination account.
  • Static Website
    • Serve your static website directly from a storage container named $web
    • CORS is not supported
    • You can grant read-only access in your resources with public access level
    • Enable Azure Content Delivery Network (CDN) to cache content from a static website
    • You can use Azure CDN to configure a custom domain endpoint

Security

  • Azure Storage is using 256-bit AES encryption
  • Customer-managed key
    • Using Azure Key Vault, you can encrypt and decrypt data in Blob storage and in Azure Files.
  • Customer-provided key
    • A customer can include their own encryption key for granular control.

Key management parameter

Microsoft-managed keys

Customer-managed keys

Customer-provided keys

Encryption/decryption operations

Azure

Azure

Azure

Azure Storage services supported

All

Blob storage, Azure Files

Blob storage

Key storage

Microsoft key store

Azure Key Vault

Customer’s own key store

Key rotation responsibility

Microsoft

Customer

Customer

Key control

Microsoft

Customer

Customer

 

Azure Blob vs Disk vs File Storage:
https://tutorialsdojo.com/azure-blob-vs-disk-vs-file-storage/

How to Create a Storage Account and Upload a Blob

Want to learn more about Azure? Watch the official Microsoft Azure YouTube channel’s video series called Azure Tips and Tricks.

Sources:
https://azure.microsoft.com/en-us/services/storage/blobs/
https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blobs-introduction
https://docs.microsoft.com/en-us/azure/storage/blobs/storage-lifecycle-management-concepts?tabs=azure-portal

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