Definition - What does Four-Way Server mean?
A four-way server is a type of server computing architecture in which four processors are embedded together within a single server CPU. It is built on a multicore processor, or the symmetric multiprocessing (SMP) architecture that supports multiple processors working simultaneously within a server system. A four-way server is primarily designed to achieve higher server computational, processing performance, scalability and fault tolerance by integrating multiple processors within a single processor dye.
Techopedia explains Four-Way Server
Typically, a four-way server's native four processors can operate/process together to perform a single task, or work separately on individual tasks. A four-way server not only increases computational/processing power but also eliminates the additional power and internal components required for each processor. Although a four-way server is designed to provide the processing power of four separate processors, its overall performance is somewhat less than that.