HP Xw460c HP Integrated Lights-Out 2 User Guide for Firmware 1.75 and 1.77 - Page 131

As the servers run, the demand for power varies for each server. A power cap for each server is set to provide the server with enough power to meet its workload demands while still conforming to the Enclosure Dynamic Power Cap. You can use either the Static Power Limit or the Enclosure Dynamic Power Cap in the following situations: o If the facility power is limited to the enclosure, you can enter a fixed limit into each enclosure. For example, if the hosted location limits the enclosure to 5000 W. In the limit Enclosure Input Watts field, enter 5000. The Onboard Administrator limits total power allocation to 5000 W, which might result in denying power to some of the server blades. o If the facility limits cooling capacity to the enclosure, then divide the limit of Btu/hr available to the enclosure by 3.41 to determine the watts limit for that enclosure. Enter that watts limit to restrict the heat load of the enclosures. For example: If the facility limits individual enclosure to 27,280 Btu/hr, then 27,280 divided by 3.41 yields 8,000 W. Enter the watts limit to restrict that enclosure to 27,280 Btu/hr. This limit can result in denying power to some of the server blades. o If you need to restrict an enclosure's electrical load or thermal output, an Enclosure Dynamic Power Cap is better. It enables more blades to power on than a Static Power Limit does. A Static Power Limit is better in the following cases: - You do not want caps dynamically adjusted on your server blades. - You prefer to not power on a server blade if it cannot be allocated full power (even if it typically consumes less). - More than 1/4 of the blades in the enclosure do not meet hardware or firmware requirements for the Enclosure Dynamic Power Cap. - You do not have redundant AC power supplies. - Do not set a cap on an empty enclosure. This disables both the Static Power Limit and the Enclosure Dynamic Power Cap. For more information on Static Power Limit, see the HP BladeSystem Onboard Administrator User Guide. iLO 2 Virtual Fan In c-Class blade servers, the HP Onboard Administrator controls the enclosure fans. The iLO 2 firmware cannot detect these enclosure fans. Instead, the iLO 2 firmware monitors an ambient temperature sensor located on the blade server. This information displays on the iLO 2 interface and retrieved by the Onboard Administrator periodically. The Onboard Administrator uses the sensor information collected from all iLO 2 management processors in the enclosure to determine enclosure fan speeds. iLO option The iLO option of the HP Onboard Administrator allows you to access the iLO 2 Web Administration (on page 132), Integrated Remote Console Fullscreen (on page 88), Integrated Remote Console ("Integrated Remote Console option" on page 88), Remote Console, and Remote Serial Console (on page 103). Clicking the links in this section will open the requested iLO 2 sessions in new windows using SSO, which does not require an iLO 2 username or password to be entered. Using iLO 2 131