Recovery is performed automatically when 8 out of 12 shards are offline. The Coordinator identifies reliable cells from those remaining, downloading the file shards available, recovering the missing parts and redistributing them in order to “heal” the file. Since redundancy is performed on encrypted data, these “helper” cells don’t decrypt the file to rebuild it. Any online cell on the network can be selected to help, guaranteeing privacy and security as well as versatility and performance.
