The Sun Fire V40z server delivers the next leap in return on enterprise IT investment with extreme performance, reliability, serviceability, and flexibility. With up to four dual-core AMD Opteron CPUs, this x64 server delivers exceptional versatility in a small footprint.This machine comes with 1 x set of rackmount rails and 2 x power cords which is required with every VTL1140 / 2540 configuration. VTL3540 requires 2 servers for HA.