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A power distribution unit (PDU) is a highly reliable, multiple outlet power strip designed to consolidate line cords within the rack and distribute conditioned power from a UPS or utility power to servers and other IT equipment. The PDU efficiently distributes power within the rack and provides fault-tolerant power redundancy for high availability requirements.
A Switched and Monitored PDU is a next-generation advanced power management solution, providing power monitoring at the outlet level, with increased accuracy at low amperages, for more precise views of power consumption down to the individual component/server level instead of at the consolidated load group. This PDU also offers individual outlet switching (on/off), which allows for remote power sequencing and helps prevent unintended PDU overloading. Management can be performed by tools such as IBM Systems Director Active Energy Manager.
Active Energy Manager (AEM) is an extension to IBM Systems Director that provides simplified management of power consumption across multiple IBM systems. AEM has both no-charge (free) monitoring functions and optional chargeable (fee-based) management functions. Monitoring functions include power trending, thermal trending, and intelligent PDU support. Fee-based management functions include power capping and power savings mode. AEM also provides a source of energy management data that can be exploited by Tivoli enterprise solutions such as IBM Tivoli Monitoring and IBM Tivoli Usage and Accounting Manager.