Virtual Storage Access Method

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Virtual Storage Access Method (VSAM) is a DASD file storage access method, used in following IBM operating systems:

  • OS/VS1
  • OS/VS2 Release 1 (SVS)
  • OS/VS2 Release 2 (MVS)

Data Set Organizations

  • Key Sequenced Data Set (KSDS)
  • Relative Record Data Set (RRDS)
  • Entry Sequenced Data Set (ESDS)
  • Linear Data Set (LDS)

Publications

  • Doug Lowe: VSAM Access Method Services and Application Programming - Mike Murach & Associates 1986, ISBN 0-911625-33-X
  • James Martin: VSAM: Access Method Services and Programming Techniques - 1987, ISBN 0-13-944174-3
  • Jay Ranade: VSAM Performance, Design, and Fine Tuning - Macmillan 1987, ISBN 0-02-948631-9
  • Jay Ranade: VSAM Performance, Design, and Fine Tuning 2nd Edition - McGraw-Hill 1989 - ISBN 0-07-051245-0
  • SG24-6105-02 VSAM Demystified (Mar 2013)