NAS server with optical SFP+ connector

SFP+ (optical)

— the presence of a slot for a replaceable module that allows you to connect storage via a fiber optic line at speeds up to 10 Gbps and higher, instead of the usual copper RJ-45. An SFP+ module is inserted into such a port for the required type of fiber and distance, and then the NAS is connected to a switch or server using an optical cable. Compared to standard gigabit Ethernet, this provides significantly higher bandwidth, stability over long lines, and absence of interference, which makes SFP+ optics especially in demand in rack mounts and server racks, when working with 4K/8K video, large databases, virtualization, and overnight network backups. For the user, this is a sign of a more professional level NAS, targeted for high loads, but it's important to consider module and switch compatibility to fully realize the potential of such a setup.