SP 9000 series having available to two chassis variants, the new 9010 10-slot version and the original 9012 12-slot version. The front of the new VSP 9010 chassis features I/O slots supporting eight I/O modules, dual control processor modules and cooling modules. Two redundant cooling modules provide for front-to-back cooling of all system components are I/O and control processor modules and switch fabric modules. Power supplies are also accessed at the front of the chassis. The rear of the 9010 chassis hosts the switch fabric modules, plus connectivity and control for power supplies. Up to eight power supplies are supported offering N+1 and A/B power grid redundancy. At 21RU, up to two 9010 chassis can be supported in a 7-foot rack