Subdisk.com will offer a device with the following features:

1) Network Attached Storage device that can provide you access to virtual disks created in cloud.
2) Open source and compatibility with any Linux distribution that can run on ARM.
3) Fast speeds, 1 Gb/s WAN connection or WIFI to internet.
4) Add `unlimited storage` to your devices by using any cloud provider of your choice.
5) Support to add storage (a virtual disk) to any device, using a USB-C (gadget connection) that you can manage from a web panel.
6) Incorporate Amazon S3, Google Drive or Dropbox on your network without authorizing every device.
7) Send or receive files between all devices in your network.
8) Backup files securely in multiple locations using one single source of truth.
9) Fast caching system, using NVME storage on the device.

Nice to have:
10) Compatibility with Playstation and Xbox devices, endless possibilities in terms of your game library.
11) Share your game library over multiple computers.

`unlimited storage`, depending on the cloud storage solution of your choice you are able to configure the virtual disk (if supported by the provider) to create any partition size, expandable later.