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Tabla de Contenidos: “…Technical details -- 2.1 Frame and CEC cage -- 2.1.1 A-frame -- 2.1.2 CEC cage -- 2.1.3 Processor unit functions -- 2.1.4 Memory -- 2.2 Internal System Control -- 2.3 z890 capacity settings -- 2.4 Concurrent changes -- 2.5 Additional hardware elements -- 2.5.1 Hardware System Area (HSA) -- 2.5.2 Support Elements (SEs) -- 2.5.3 Hardware Management Console (HMC) -- 2.5.4 External Time Reference (ETR) -- 2.5.5 Sysplex Timer® -- 2.5.6 z890 ETR (Sysplex Timer) attachment -- 2.5.7 Coupling Facility Control Code (CFCC) Level 13 -- 2.6 I/O cage -- 2.6.1 I/O and cryptographic features -- 2.6.2 New I/O features and functions -- 2.6.3 I/O interfaces and identification -- 2.7 Channel subsystem -- 2.7.1 Logical Channel Subsystems (LCSSs) -- 2.7.2 Spanned channels -- 2.8 Coupling links -- 2.8.1 Coupling Link connectivity with other servers -- 2.9 OSA-Express features -- 2.9.1 OSA-Express Fast Ethernet -- 2.9.2 OSA-Express 1000BASE-T Ethernet -- 2.9.3 OSA-Express Gigabit Ethernet -- 2.9.4 OSA-Express Token Ring -- 2.10 ESCON channels -- 2.10.1 ESCON directors and multiple LCSSs -- 2.10.2 Fiber Quick Connect (FQC) for ESCON "Quick Connect" -- 2.11 FICON and FCP channels -- 2.11.1 FICON Express features -- 2.11.2 FICON Express LX feature -- 2.11.3 FICON Express SX feature -- 2.11.4 FICON channel in Fibre Channel Protocol (FCP) mode -- 2.12 Cryptographic support -- 2.12.1 z990 Cryptographic processors -- 2.13 HiperSockets -- 2.14 HMC and SE functionss -- 2.14.1 Integrated 3270 console -- 2.14.2 Integrated ASCII console…”

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