More importantly, the 4200 is touted as the first ReadyNAS ever to support the 10 Gigabit Ethernet network infrastructure, resulting in improved throughput, response time, reliability, and efficiency. Like its predecessor, the 4200 features hot-swappable SATA drives, redundant system cooling, redundant network ports, Error-Correcting Code, and architectural support for NAS and iSCSI SAN applications.