Azure Storage vs SharePoint Document Library


Hi Everyone,


I am looking at Azure Blob Storage (cool tier) for a customer to archive older files from their on-premise file server.


This is going to cost the customer $X per month in addition to their current Microsoft 365 licenses.


Can someone please tell me why the customer would choose this option over using a document library within SharePoint? SharePoint storage is already included with their current 365 licenses.


Does Azure Storage offer any benefits that are worth the extra costs?


Thanks for your advice!



4 Replies


Bummed to see no one chimed in here. I am also curious about this. 


Hi @EricLR,


no expert on my end but I am sure there many ways to look at your topic anyways.

One of the reasons why I consider choosing Blob Storage over SP Document Libraries is because I use PowerApps. PowerApps can interact with Data from both Blob Storage and SP. But if you are using the PowerApp to interact with a SP list, you can only manage up to 2500 items in your SP list. That is very limiting in a business environment where you are quick to exceed these 2500 items. With Blob Storage a limit of that kind does not exist.

Thank you and best regards




If your customer rarely accesses these files and these are truly archival documents then, this is where the cool storage comes in. It's a few dollars a month and the files just wait there, waiting to be opened. This is good if they are rarely accessed. Whereas a document library will need some sort of care and love. Documents will need to be split up, organized, etc. It's all also on how the client wants to access the data, will it be one or a few, or everyone? 


If it's everyone, I would perhaps design a SPO site for archival, access is easier perhaps. Especially if it's a small amount of files for a small business. 


@telecasterpersonally, I believe the right tool is fit for purpose.

And in that sense if your documents are marked for archive, accessible once in 180 + days, in the cheapest storage and its acceptable to recovery them within xx hours then you go for the Azure Blob Storage Archive Tier. Try the to check for the Azure Blob Storage Archive tier price. If you just truly use it as an archive the cost might be extremely low.

Now if you want to just mark those files as archive but, your team are using them all the time to collaborate on top of them then go for the SP.

Can I challenge you a little bit?? A document is the carrier of certain data. Do you really need to store the document itself? (For example, for legal reasons?) Otherwise you can extract the data or the metadata from the documents, store them in any SQL/NO-SQL/Cosmos DB and you can drop the document after a retention period...