feat: Add details about Storage.

docs/developer-guides/configurations/storage.md

@@ -0,0 +1,31 @@
+---
+sidebar_position: 3
+id: storage
+title: Storage
+---
+
+Files in [nmrxiv](https://nmrxiv.org) are stored as [objects](https://en.wikipedia.org/wiki/Object_storage) and are [S3](https://en.wikipedia.org/wiki/Amazon_S3) compatible which provides below three big benefits.
+* **Backup/redundancy** - S3 and similar have built-in backups and redundancy
+* **Scaling** - Savings files off-server becomes necessary in modern hosting, such as serverless or containerized environments, as well as in traditional load-balanced environments
+* **Disk usage** - You won't need as much disk space when storing files in the cloud
+* **Features** - S3 (and other clouds) have some great features, such as versioning support for files, lifecycle rules for deleting old files (or storing them in a cheaper way), deletion protection, and more
+
+#### Configuration
+There are just two place where the configuration needs to be done.
+* Within your Object Storage or Amazon S3 you need to.
+    * Create the bucket.
+    * Create a service account to get Key/Secret Key.
+
+* Within the [nmrxiv](https://nmrxiv.org) you just need to configure below values in the `.env` file.
+````
+FILESYSTEM_DRIVER=
+
+AWS_ACCESS_KEY_ID=xxxxxx
+AWS_SECRET_ACCESS_KEY=xxxxxxs
+AWS_DEFAULT_REGION=us-east-1
+AWS_BUCKET=nmrxiv
+AWS_BUCKET_PUBLIC=nmrxiv-public
+AWS_ENDPOINT=<end-point-of-your-storage-provider>
+AWS_URL=<end-point-of-your-storage-provider>
+
+````