Custom Django Storage

I have a web page where people can upload their own images and I want to store them in a salable storage. I was willing to use Amazon S3, but later I decided to use my own file servers with web servers for serving static content (images)

But I开发者_如何学运维'm not sure how to do this. What is the correct way to do it and what custom Django storage should I use? How will I upload images to these file servers?

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Here's a start: Writing a custom storage system.