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z/OS Components

z/OS Components. Base & Optional. Foundation of mainframe environment. z/Architecture (Hardware) An IBM architecture for mainframe computers and peripherals. The System z family of servers uses the z/Architecture.

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z/OS Components

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  1. z/OS Components Base & Optional

  2. Foundation of mainframe environment • z/Architecture (Hardware) An IBM architecture for mainframe computers and peripherals. The System z family of servers uses the z/Architecture. z800(2066) z890(2086) z900(2064) z990(2084) z9(2094) z10(2097) It is the successor to the S/390 and 9672 family of servers. • z/OS (System z Operating System) • The backbone of the z/OS system is the MVS Basic Control Program (BCP) • with JES2 or JES3. These provide the essential services that make • z/OS the system of choice when you need to process your workloads • reliably, securely, with complete data integrity and without interruption.

  3. z/OS Communications Server • z/OS Communications Server TCP/IP support provides a number • of standard client and server applications, including: • SNA 3270 Logon Services (TN3270) • z/OS UNIX logging services (syslogd) • File Transfer Services (FTP) • Network Management Services (SNMP Agents, Subagents, Trap forwarding) • IP Printing (LPR, LPD, Infoprint Server) • Internet Daemon Listener (INETD) • Mail Services (SMTP and sendmail) • z/OS UNIX logon services (otelnetd) • Remote Execution (REXECD, RSHD, REXEC, RSH) • Domain Name Services (Caching DNS BIND9 server)

  4. IEA Allocation/unallocation Auxiliary storage manager (ASM) Contents supervision Communications task (COMMTASK) Data Facility Product (DFP) Generalized trace facility (GTF) Initial program load (IPL) Input/output supervisor (IOS) Master scheduler Nucleus initialization program (NIP) Program Call authorization (PC/AUTH) Reconfiguration Recovery termination manager (RTM) Supervisor control System resources manager System trace Timer supervision Virtual storage management (VSM) BPX z/OS UNIX System Services $HASP (grandfather exception) JES2 IGD Storage management subsystem (SMS) IKJ Time Sharing Option Extensions (TSO/E) IOS Input/output supervisor (IOS) List of z/OS Component 3 Character Identifiers

  5. IEE Auxiliary storage manager (ASM) Communications task (COMMTASK) Data Facility Product (DFP) JES2 v JES3 v Master scheduler Reconfiguration Recovery termination manager (RTM) Supervisor control System management facilities (SMF) System resources manager (SRM) System trace v Task management Timer supervision IEF Allocation/unallocation Converter/interpreter Data Facility Product (DFP) Initial program load (IPL) Initiator/terminator JES/scheduler services JES2 v Master scheduler Master subsystem/subsystem interface Scheduler JCL facilities (SJF) Scheduler restart Scheduler services (ENF) System management facilities (SMF) List of z/OS Component 3 Character Identifiers (continued)

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