The HPSS hierarchical storage system currently uses mover nodes to interface client processes to the hardware devices. As archival bandwidth requirements increase, the number of mover nodes required to provide the necessary bandwidth has become a significant factor both in terms of capital expense and administrative overhead. The LLNL data storage group would therefore like to select the most powerful yet cost effective IBM architecture currently available for use as future HPSS movers nodes. The LLNL storage group currently uses IBM winterhawk2 SP nodes as HPSS mover nodes. Several IBM architectures including nighthawk SP nodes and several P series IBM architectures were considered and the M80 system appeared to be the most promising based upon its high memory bandwidth and capability to attach multiple RIO drawers offering 64bit 66MHz PCI buses.