AlphaServer SC20 supercomputer: facts and figures *sc20_rack.jpg* HP AlphaServer SC20 configurations use HP AlphaServer DS20L components with 833 MHz processors and up to 2 GB of memory per node. HP AlphaServer SC20 systems integrate with AlphaServer ES45 nodes for large memory, high storage capacity, and high bandwidth I/O nodes. The 2P1U DS20L nodes have triple the compute density of the ES45 nodes. HP AlphaServer SC systems are integrated combinations of an interconnect building block, compute building block(s) and storage building block(s). See the AlphaServer SC20 QuickSpecs and AlphaServer SC45 QuickSpecs for more detailed configuration specifications. hp AlphaServer SC20 configuration summary: * Two Alpha EV68 833 MHz processors per node (2P1U) * Up to 72 processors per compute building block rack * 4 MB cache per processor * 2 GB memory per node * Scalability of eight to 256 (or more) processors per system * 72 GB storage per DS20L node * 2.3 TB storage per compute building block * 4.5 TB storage per I/O rack (scalable across multiple racks) * Standard 19" racks (RETMA 2.0 M tall) * 532 MB/s I/O per node on two 64-bit PCI slots (2/3 length) 0-1 available * Compatibility with ES45 nodes for larger memory size, faster I/O bandwidth, more I/O slots, and larger storage capacity Features: Auto reboot, thermal management, remote system management, RAID, memory failover, ECC memory, ECC cache, ECC system bus, SMP CPU failover, error logging, optional Uninterruptible Power Supply (UPS), redundant file-service with auto failover, redundant management server available, pre-staged with additional burn-in at the factory I/O options: Fast Ethernet, Gigabit Ethernet, RAID, Ultra2SCSI, Ultra3SCSI, Fibre Channel Software: Tru64 UNIX 5.1a HP AlphaServer SC system software, including Cluster File System, Parallel File System, and Platform LSF Warranty * 1-year on-site, 9-hour x 5-day warranty with next-business-day response * Optional service plans for up to 24x7, 2-hour, same-day response time are available, as well as a complete portfolio of worldwide service offerings to maximize the uptime of your critical system environment Service and support The HP AlphaServer SC includes staging, integration and installation of the interconnect building block, compute building block(s) and storage building block(s). A QuickStart service is included, with three to five days of on-site support and training from Global Services to customize the configuration, set up accounts, and otherwise train and prepare the system and administrators for a smooth launch into production use and maintenance. Three days are supplied for 16-way switch configurations and five days for 128-way switch configurations. Additional training courses are available for an additional charge. Optional integration and installation are available for quotation on options not included in the interconnect, compute or storage building blocks. Optional custom site planning, custom freight arrangements, VIS engineering team on-site installation of HP AlphaServer SC and tailored customer configuration documentation are also available for quotation. hp system software HP AlphaServer SC system software is included and provides utilities and libraries necessary for the operation and management of the HP AlphaServer SC20. HP AlphaServer SC Development Software is a highly recommended option, which includes Fortran, C++, and the Developer's Toolkit for each node. Performance For the latest performance numbers, visit the benchmarks page