Daas lieldatoru OS

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Daas lieldatoru OS
IBM OS/360 -gt OS370 -gtMVS -gt OS/390 -gt z/OS,
VM (no is serijas nak nosaukums Big Blue, i
ir daudz gan zagta, gan noskatita) EC(PSRS)
praktiski 100 no IBM zagtas mainas ICL
(anglu) OS lidziga IBM VM HP (agrak TANDEM)
PATHWAY pilnigi savadaka OS SIEMENS BS2000,
tagad kopa ar FUJITSU
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Introduction to OS/390
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Content

• Hardware overview
• System components overview
• Storage and Program management
• Datasets, Catalogs and etc.

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OS/390 software and hardware
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Konsole
Agrakajas sistemas versijas ta bija
rakstammaina. Ar to stradaja mainas
operatori. Programmetaji un lietotaji ievadija
programmas un datus ar perfokartem, izvadu sanema
izdrukatu uz listingiem. Tas izskaidro daudzus
konceptus ai sistema, kas dzivi vel odien
(piemeram, rindinu numurus programmu tekstos
katras rindinas 1-6.pozicija) Velak paradijas
displejs ar klaviaturu (piemeram, terminals
3270). Tas ir burtu-ciparu displejs bez grafikas,
tipiski 24 rindinas pa 80 zimem.
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OS/390 evolution
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OS/390 elements and features
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OS/390 contents
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Data Facility Storage Management Subsystem
(DFSMS)
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Components of OS/390 security
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RACF Functions
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RACF - svarigakais

• Ja sanemat kludu zinojumu, kur kaut kas teikts
  par RACF, tad droi vien jus meginat darit kaut
  ko, kas jums nav atlauts.
• Vai nu Jums nepietiek tiesibu (un jaludz
  palidziba administratoram)
• vai ari Jus tieam meginat darit kaut ko, kas
  Jums nebutu jadara (apzinati vai ne)

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Resource Management Facility (RMF)
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System Management Facility (SMF)
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Workload Manager (WLM)
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Virtual Lookaside Facility (VLF)
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UNIX System Services
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Language Environment (LE)
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LEs common run-time environment
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Time Sharing Option/Extended (TSO/E)
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OS/390 Storage Concepts
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OS/390 Address Spaces
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Processor Storage Overview
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Storage managers
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Virtual Storage Manager
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Virtual Storage
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Program Compile, Link-edit, and select into
execution
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LLA and Module Search Order
1. Modules that were loaded under the current
task (LLEs) 2. The job pack area (JPA) 3.
Tasklib, steplib, joblib, or any libraries that
were indicated by a DCB specified as an input
parameter to the macro used to request the module
(LINK, LINKX, LOAD, ATTACH, ATTACHX, XCTL or
XCTLX). 4. Active link pack area (LPA), which
contains the FLPA and MLPA 5. Pageable link
pack area (PLPA) 6. SYS1.LINKLIB and libraries
concatenated to it through the LNKLSTxx member of
parmlib.
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The LNKLST
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Library Lookaside (LLA)
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DFSMS. Storage Management Subsystem
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Introduction to DFSMS
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DFSMS environment
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DFSMS
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Data Sets
Dataset.abc Dataset.def Dataset.ghi
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Data Sets name rules
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Record Format (RECFM)Logical record length
(LRECL)Block Size (BLKSIZE)
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Data set organization (DSORG)
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Major DFSMS/MVS access methods
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BPAM to access PDS and PDSE
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PDS and PDSE data organizations
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Structure of a PDS
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A PDS Directory Entry
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PDSE structure
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Processing a PDSE
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PDSE and PDS Differences
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Sequential access methods
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Virtual Storage Access Method (VSAM)
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Generation data groups (GDG)
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Defining a generation data group
//DEFGDG1 JOB ... //STEP1 EXEC PGMIDCAMS //GDGMOD
DD DSNAMEGDG01,DISP(,KEEP), //
SPACE(TRK,(0)),UNITDISK,VOLSERVSER03, //
DCB(RECFMFB,BLKSIZE2000,LRECL100) //SYSPRINT
DD SYSOUTA //SYSIN DD DEFINE
GENERATIONDATAGROUP - (NAME(GDG01) - NOEMPTY
- NOSCRATCH - LIMIT(255) ) /
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Absolute generation and version numbers
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Relative generation number
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Introduction to ICF
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The Master catalog
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Using aliases
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Catalog search order
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Locating a Data Sets
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Cataloged and uncataloged data sets
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Volume Table of Contents (VTOC)
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Data set control block (DSCB)
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Index VTOC structure
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Storage Management policies
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ACS routines
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Traditional DASD
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Redundant Array of Independent Disks (RAID)
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Introduction to tape processing
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Describing the labels
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Tape capacity