| FTP Server | Total Storage | Concurrent Users | Protocol | Status | | :--- | :--- | :--- | :--- | :--- | | | 5 PB | 50,000+ | FTP/S, SFTP | Active | | NoodleFTP (Legacy) | 400 TB | 5,000 | FTP | Offline | | The Internet Archive FTP | 2.5 PB | 15,000 | HTTP/FTP | Active | | MIT FTP Mirror | 200 TB | 10,000 | FTP | Active |
: It operates over TCP/IP, typically using port 21 for commands and port 20 for data.
: The server is rumored to have been founded by a collective of renegade archivists who believed that digital history is too fragile to be left to corporations. They archived everything from early satellite telemetry to the source code of defunct operating systems. Understanding FTP Servers