The SUN Fire V210 features dual 1GHz UltraSPARC IIIi processors each with 1Mb cache. Four built-in copper gigabit ethernet ports provide backward compatibility with 10/100 ethernet and reduce the need to install additional PCI networking cards. A single 66Mhz full length PCI expansion slot provides additional connectivity options. Two hot-swap internal drive bays are provided for the operating system. Because of the ultra-slim 1U high design of the Sun Fire V210, up to 32 servers are supported in a single SUN rack.