Using Azure Blob Storage Archive Tier For Archival Data

Bob Pusateri shows us how to configure Azure Blob Storage Archive Tier:

Two of the products I use extensively for this purpose are Amazon Glacier and, more recently, Microsoft Azure Blob Storage Archive Tier. As happy as I’ve been with Amazon Glacier since its introduction in 2012, I always hoped Microsoft would offer a similar service. My wish came true in Fall of 2017 when an archive tier of Azure Blob Storage was announced. Rather than branding this capability as a new product, Microsoft decided to present it as a new tier of Azure Blob Storage, alongside the existing hot and cool storage tiers.

A noticeable difference from the hot and cool storage tiers is that the archive storage tier is only available on a per-blob basis. While a storage account can be configured to have all blobs placed in either the hot or cool tier by default once they are uploaded, the archive tier is not an option. Once a blob is uploaded, it must explicitly be moved into the archive tier. If one is using the Azure Portal to do this, there’s several clicks involved per blob. The free Azure Storage Explorer client is no better. While I found several third party tools that can upload files to the archive tier, none were free. At this point, I decided to write my own method using Powershell, which I am happy to share below.

Read on for the script.  A good use for Azure Blob Storage Archive Tier would be storing old database backups which you have to keep around for compliance purposes but rarely use.

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