675W HE Redundant Power Su

For power budgets under 675W - installing a second power supply provides redundancy. To install a second power supply - use this IBM High Efficiency 675W Power Supply - part number 60Y0332. Installing four power supplies ensures redundancy even with a fully loaded server. To install the third and fourth power supplies - use thr IBM 675W Redundant Power Supply Kit - part number 60Y0327. The power subsystem is designed for N+N operation and Hot-Swap exchange. Having four power supplies installed allows for N+N redundancy - where N=2 (that is - a total of four power supplies where two are redundant backups for the other two).