Compaq ProLiant 6000 Compaq ProLiant 6000 Power Management using Windows NT Pe - Page 18

422A/0697ECG WHITE PAPER (cont.) ... Table 8 provides power supply recommendations for Compaq ProLiant 6000 servers tested under typical load conditions. The following options are considered standard for all recommendations: • 1 Monitor • 1 Keyboard and mouse • 1 Floppy drive • 1 CD-ROM drive • 1 ProLiant Storage System (fully loaded) TABLE 8 POWER SUPPLY RECOMMENDATIONS Components No. of Processors No. of EISA/PCI expansion boards Memory No. of hard drives Additional removable media Input voltage No. of Power Supplies recommended for redundancy Configuration 1 UP TO 4 UP TO 11 64MB - 4GB UP TO 18 UP TO 2 200V - 240V 2 Configuration 2 UP TO 4 UP TO 9 64MB - 4GB UP TO 18 0 100V- 120V 2 Configuration 3 UP TO 4 MAXIMUM 64MB - 4GB MAXIMUM MAXIMUM 200V - 240V 3 Considerations to Eliminate Single Points of Failure The hot-pluggable redundant power supplies provide the ProLiant 6000 with consistent, reliable power to operate your system. The N+1 redundancy scheme eliminates the possibility of overloading the power supply by adding too many power-consuming devices. Under maximum load conditions, a fully loaded ProLiant 6000 will not require more than two power supplies with a third to provide redundancy. However, there are other situations that can affect the power supplied to your computer. Power failures, surges, and sags can cause the system to crash and can damage the electronics. For this reason, apply AC input to power modules from different electrical sources whenever possible. To protect against damage and loss of data from temporary power outages, consider the purchase of multiple uninterruptible power supplies for individual power modules, critical systems, and the network itself, including hubs, bridges, and routers. Windows NT has uninterruptible power supply (UPS) support on individual computers. These UPSs typically provide power for five to 20 minutes, which is long enough for Windows NT to do an orderly shutdown when power fails. If there is a history of frequent or prolonged power outages, you should investigate ways to provide power for your critical computers other than from your local power company. To prevent power surges that can destroy your data, obtain quality individual power surge suppressors for each power module. If the weather at the location of your company requires heating or cooling within the building to keep your computers and network devices within required operating temperatures, consider making the climate control system fault-tolerant as well. 18