It is decided to implement the file storage similarly to the proposed EOS storage.
In short words, the idea is as follows:
There will be a certain number of bridge nodes which will preserve a version of IPFS-based decentralized storage.
Each bridge node will have a full copy of this storage. Thus, we will have a number of identical IPFSes and a number of nodes which ensure its functioning. Bridge nodes sync with each other.
Bridge nodes are elected and paid depending on their operability and statistics. There will be a special Treasury proposal for funding of the decentralized storage bridge nodes. This is the incentivisation for running these nodes.
The storage bridge nodes will be elected and paid for by the Callisto Team before the Hard Fork №2. After Hard Fork №2, these nodes will be elected and paid for by the Cold Stakers decision.