Azure blob storage
Azure Blob Storage is a service provided by Microsoft for storing large amounts of unstructured data in the cloud, such as text or binary data, offering high durability and availability for data storage solutions. Azure Blob Storage allows developers to store and access data objects via HTTP or HTTPS requests, supporting a variety of use cases including backups, content distribution, and dynamic media delivery.
Page, Block and Append Blob Comparison
| Blob Type | Block Blob | Append Blob | Page Blob |
|---|---|---|---|
| Use case | Storing large files, streaming data | Logging, continuously adding data to an existing blob | Storing virtual hard disk (VHD) files |
| Max size | 190.7 TiB | 195 GB | 8 TiB |
| Upload method | Uploaded in blocks, can be uploaded in parallel | Appended to sequentially | Uploaded in a single operation |
| Read method | Random access, read any block of data at any time | Sequential access, read data in order it was written | Random access, read any portion of the blob |
| Data modification | Can modify individual blocks | Can only append new data | Can modify individual pages |
| Pricing model | Based on storage size and number of operations | Based on storage size and number of append operations | Based on storage size and number of operations |
注：当前取于2023年数据，实际以官方最新数据为准。
Azure blob different storage tiers
- Hot Access Tier: The Hot Access Tier is designed for data that is regularly accessed, such as images on a website. It comes with a higher storage cost but lower access cost compared to other tiers.
- Cool Access Tier: The Cool Access Tier is meant for data that isn’t accessed frequently, like customer invoices that need to be stored for at least 30 days. This tier offers lower storage costs but higher access costs than the Hot Tier.
- Cold Tier: The Cold Access Tier is meant for data that not often accessed frequently. Data stored in the Cold Tier must be retained for at least 90 days. The cold tier has lower storage costs and higher access costs compared to the cool tier.
- Archive Tier: The Cold Access Tier is meant for data that’s hardly accessed like long term backups. Data stored in the Cold Tier must be retained for at least 180 days
https://learn.microsoft.com/en-us/azure/storage/blobs/access-tiers-overview
Azure Blob Storage: Scalable and Secure Cloud Storage Solution
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