HP Integrity Superdome 2 HP Integrity Superdome 2 Site Preparation Guide (AH33 - Page 6

Superdome 2 IOX enclosures support two ac power supplies with a minimum of one power supply required to provide all necessary power to the enclosure and two power supplies providing 2N redundancy. Cooling subsystem Superdome 2 compute enclosures support up to 15 Active Cool Fan modules to provide thermal regulation in six fan zones. Each bank of fans (lower, middle, and upper) contains five fans split into two zones with the middle fan of each bank shared between the two zones. Fan speed is controlled by the OA firmware using a system algorithm to ensure optimum cooling. Each fan zone is in an N+1 configuration where a fan might fail in each zone, and the system continues to function. When a fan in a zone fails, the fan speeds of the functioning fans in the zone increases to compensate. If two or more fans in a zone fail, all components within that zone (including blades, interconnects and manageability modules) are shut down automatically by the OA. IOX enclosures include two 80mm fans per I/O bay in N+1 configuration. Manageability subsystem Superdome 2 is managed by the Superdome 2 Onboard Administrator (OA) which monitors overall complex health as well as information about individual components of the complex, and can accessed through a GUI from a remote terminal or through a CLI through a remote or a local terminal. Two GPSMs in each compute enclosure manage CAMnet fabric distribution to all server blades, XFMs and IOX enclosures in the complex and global clock sources for the complex. Fans and power supplies in the upper section of the compute enclosure are monitored and controlled by the GPSMs through OA. Also, the GPSMs provide power for the rack door display as well as USB connectivity for the compute enclosure DVD module. Each compute enclosure supports four XFMs that connect to IOX enclosures to provide additional I/O capacity to nPartitions. Server blades HP Integrity Superdome 2 CB900s i2 Server Blades support two quad-core Intel Itanium 9300 series processor modules and up to 32 DDR3 DIMMs. Memory subsystem The CB900s i2 physical memory subsystem connects two Itanium 9300 series processor modules to two groups of 16 DDR3 DIMMs. Each processor has two memory controllers. Memory must be loaded in quads for each processor. DIMMs The memory subsystem supports only DDR3 SDRAM technology using industry-standard 1.2" high DIMMs. Single DIMM CB900s i2 Min / Max sizes Memory size 4 GB 8 GB1 32 GB / 128GB 64 GB / 256 GB 1 8 GB DIMMs available in Q4 2010. For more DIMM information, see the HP Integrity Superdome 2 User Service Guide. 6 HP Integrity Superdome 2 system overview