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Naming conventions for containers

Taken into account the following naming conventions for your container:

• The container name should be a valid DNS name
• Names have to start with a letter or number, and can contain only letters, numbers, and the dash (-) character.
• Every dash (-) character must be immediately preceded and followed by a letter or number; consecutive dashes are not permitted in container names
• All letters should be in lowercase
• Names can be from three to sixty-three characters long

Naming blobs and blob sizes

The maximum size for a blob is 70MB. If a backup file is, for example, 160 MB, multiple blobs will be created using the following naming format:

• <blobname>.safe_<i> where <i> is the blob counter

If the blob name is testdb for example, the three blobs created in the container will have the following names: testdb.safe_1 (70MB), testdb.safe_2(70MB), testdb.safe_3(20MB)

Failed backup

If the backup fails before creating all blobs and only a couple of blobs are created, these blobs will remain in the container unless you manually delete them.  

Network Resiliency

Take into account that if you do not enable the network resiliency settings for your backup operations and the network goes down, the operation fails and no retry is executed. When enabling the network resiliency settings and using Azure Blob for backup operations, only the following parameters are applicable:

• Retry Interval -  the period to wait before retrying the backup operation
• Total retry interval interval -  the total time in which to retry the backup before stopping the operation

For restore operations the resiliency settings remain enabled.