Blob storage key points

The following tips should be considered, as they will help you when designing your storage solution using blob services:

• Blob storage supports both standards, but only page blobs support premium storage.
• Block blobs are named as such because files larger than 64 MB are uploaded as smaller blocks, and then get combined into one final blob.
• You cannot change the type of blob once it has been created.
• Block blobs are named as such because they provide random read/write access to 512-byte pages.
• Page blobs can store up to 8 TB.
• Storage containers built for Blob storage may only contain lowercase letters, hyphens, and numbers, and must begin with a letter or a number. However, the name cannot contain two consecutive hyphens. The name length can vary between three to 63 characters.
• The maximum number of blocks in a block blob or append blob is 50,000.
• The maximum size of the block in a block blob is 100 MB. As a result, a block blob can store data of up to 4.75 TB.
• The maximum size of the block in an append blob is 4 MB. As a result, an append blob can store data of up to 195 TB.