System Components7017 6300–005 1–7Table 1–2. Acronyms for System ComponentsAcronym Component NameNX582x-rp Enterprise Server models: (x = 1, single-domain; x = 2, dual-domain; r = performance level; p = number of PMs per system)APC Automatic Power ControlASIC Application specific integrated circuitATM Asynchronous transfer modeCIOM Common Input/Output moduleCMF Channel manager facilityCMOS Complimentary metal oxide semiconductorCSBus Channel service busCSE Common scan engineDAC Direct access channelDDA Dual domain adapterDDMP Dual-domain, multiple-processorDIMM dual Inline memory moduleDTU Data transfer unitES Enterprise serverF/T FeedthruFDDI Fiber distributed data interfaceGB GigabyteEnterpriseServerHeterogeneous multi processingIOB Input/Output bridgeIOM Input/Output moduleIOU Input/Output unitIPI Intelligent peripheral interfaceJTAG Joint task access groupLAN Local area networkMAINTLAN Maintenance local area networkMB MegabyteMb MegabitMLI Message level interfaceMSU Memory storage unitMSUA Memory storage unit (4 requestor)MSUK Memory storage unit (8 or 12 requestor)OSCAR Oscillator card (clock)PCI Peripheral connect interfacePM Processor moduleQIC Quarter-inch cartridge tapeSCP System control processorSCSI Small computer system interfaceSDSP Single-domain, single-processorUPS Uninterruptible power supplyUSD Unity storage device
