HP DL560 Critical factors in intra-rack power distribution planning for high-d - Page 9

Power circuit monitoring Enterprise data systems can be maintained efficiently with minimum manpower by employing components that continuously monitor current loading on power circuits. Monitored systems make it easier to balance power distribution circuits, to gauge expansion capabilities, and to avoid unscheduled downtime resulting from circuit overloading or equipment damage. Monitored PDUs from HP include an integrated display panel that provides: • Real-time measurement of current load on each load segment • Out-of-range voltage indication (10 to 20 percent under-voltage or over-voltage condition) • Load warning alarms for each load segment (load detection of 80 to 102 percent rated capacity) • Overload warning for each load segment (load detection of 102 percent or greater than rated capacity) For maximum convenience, HP monitored PDUs can accept an optional PDU Management Module. This module enables IT administrators to monitor one or a pair of HP Monitored PDUs over a network. The HP PDU Management Module can be accessed through the built-in web interface or the textbased serial/Telnet interface. The HP PDU Management Module can also be integrated with SNMP management software such as HP Systems Insight Manger (SIM) that can receive and log SNMP traps (alerts) to manage alarm conditions. Other considerations An effective power distribution solution for a high-density rack involves much more than meeting the power requirement needs of rack-mounted components. Factors including cable routing, air flow, and cooling can also become critical in high-density systems. For more information on these and other related subjects, refer to the HP technology papers web site at the following URL: http://h18004.www1.hp.com/products/servers/technology/whitepapers/index.html 9