z/OS DFSMS Using Magnetic Tapes
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Contents (exploded view)
z/OS DFSMS Using Magnetic Tapes
SC23-6858-00
Abstract for DFSMS: Using Magnetic Tapes
z/OS Version 2 Release 1 summary of changes
Introduction to tape processing
Describing the labels
Describing the data sets
Allocating tape data sets
Completing the data control block
Tape information recorded elsewhere
Data sets managed by Storage Management Subsystem
Data sets and volumes managed by DFSMSrmm
Cataloged data sets
Other tape information repositories
Generation data groups
Concatenated data sets
Passed data sets
Multiple volumes and multiple data sets
Processing methods and routines
Open/Close/End-of-Volume routines
Opening a data set
Closing a data set
End of data set or volume
Checkpoint/Restart routine
Automatic volume recognition
Tape disposition
Verifying block count
Bypassing label processing
Controlling the use of BLP
Resource Access Control Facility (RACF), a component of the secureway security server for z/OS, protection and BLP JCL
Tape characteristics
Nine-track tapes and dual density feature
Seven-Track tapes
Tape cartridges
Compaction
Recording technology
Tape marks
Beginning and End of tape
IBM standard labels
Label definitions and organization
Volume label
Data set header labels
User header labels
Data set Trailer labels
User Trailer labels
Additional labels
System-Managed mountable tape external labels
Tape marks
IBM standard labels format
Format of the IBM standard volume label (VOL1)
Format of IBM standard data set label 1 (HDR1/EOV1/EOF1)
Format of IBM standard data set label 2 (HDR2/EOV2/EOF2)
Format of IBM standard user label (UHL1 - UHL8 or UTL1 - UTL8)
IBM standard label processing
Creating a volume label
IBM standard volume label editor routines
Protecting data
Opening an input data set
Volume serial number
Positioning the volume to the data set
Processing the HDR1 label
Verifying data set name
Open/EOV user exit for security verification
Password protection
Expiration date
Block count
Processing the HDR2 label
Data set characteristics
Positioning after header label 2
User header labels
Read backward
End-of-Data or end-of-volume on input
Verifying block count in label when reading
The EOV2/EOF2 label
User Trailer labels
Determining volume switch
Checking the next volume
Closing an input data set
Opening an output data set
Volume serial number
Positioning the volume to the data set
High-Speed search on an IBM tape cartridge
Positioning to the End of a data set
Positioning to the beginning of a data set
Open/EOV user exit for security verification
Expiration date on existing label
Password protection and data set name on existing label
Writing data set header labels
Writing user header labels
Permanent I/O error
End-of-Volume on output
Writing data set Trailer labels
Writing user Trailer labels
Writing labels on new volume
RACF processing on the new volume
Special end-of-volume conditions
Closing an output data set
Writing data set Trailer labels
Writing user Trailer labels
Restarting from a checkpoint
ISO/ANSI labels
Label definition and organization
Volume label
Data set header labels
User header labels
Data set Trailer labels
User Trailer labels
System-Managed mountable tape external labels
Tape marks
ISO/ANSI labels format
Format of the ISO/ANSI volume label (VOL1)
Format of ISO/ANSI data set label 1 (HDR1/EOV1/EOF1)
Format of ISO/ANSI data set label 2 (HDR2/EOV2/EOF2)
Format of ISO/ANSI user header and Trailer labels (UHL/UTL)
Other file header labels
Overview of ISO/ANSI label processing
Creating a volume label
ISO/ANSI volume label verification and editor routines
Protecting data
Volume accessibility
Data set accessibility
Input processing for password-protected data sets
Output processing for password-protected data sets
ISO/ANSI installation and use characteristics
ASCII conversion
CCSID conversion
Volume initialization
ISO/ANSI installation exits
Volume access
File access
Label validation
Label validation suppression
WTO/WTOR installation exit
RACHECK installation exits
Generation data groups
Spanned records
Block padding
Checkpoints
Compatibility with non-version 3 or non-version 4 volumes
Processing differences between Version 1 and Version 3 or Version 4
Processing Version 3 or Version 4 volumes on earlier MVS systems
Tape marks
Opening an input data set
Volume serial number
Positioning the volume to the data set
Processing the HDR1 label
Verifying data set name
Processing label 1 accessibility code
Processing expiration date
Block count
Processing the HDR2 label
Data set characteristics
Positioning after header label 2
Processing user header labels
Read backward
End-of-Data or end-of-volume on input
Verifying block count in label when reading
The EOV2/EOF2 label
User Trailer labels
Determining volume switch
Checking the next volume
Closing an input data set
Opening an output data set
Volume serial number
Positioning the volume to the data set
Expiration date on existing label
Writing data set header labels
Writing user header labels
Permanent I/O error
EOV on output
Writing data set Trailer labels
Writing user Trailer labels
Writing labels on new volume
RACF processing on the new volume
Special EOV conditions
Closing an output data set
Writing data set Trailer labels
Writing user Trailer labels
Checkpoint/Restart not allowed
Nonstandard labels
Nonstandard volume label verification and editor routines
Verifying block count
Unlabeled tapes
Creating an unlabeled tape volume with DFSMSrmm
Opening an input data set
Positioning the volume to the data set
Read backward
End-of-Data or end-of-volume on input
Determining volume switch
Opening an output data set
Volume serial number
Positioning the volume to the data set
End-of-Volume on output
Closing an output data set
Restarting from a checkpoint
Using tape volumes created by other systems
Standard labels
Nonstandard labels
Unlabeled tapes
Leading tape marks
Tapes created on os/400
Using the IBM Tape Library
Tape library
Volume labels
Tape processing
Tape label verification-automated tape library
Specific mount request
Non-specific mount request
Tape label creation
Tape library scratch tape pools
Component support of label processing
External labels
Reel label
Cartridge label
Contents label
Checkpoint security label
Equivalent ASCII and EBCDIC codes
ASCII
EBCDIC to ASCII
ASCII to EBCDIC
Conversion irregularities
Copyright IBM Corporation 1990, 2014
z/OS DFSMS Using Magnetic Tapes
z/OS DFSMS Using Magnetic Tapes
Copyright IBM Corporation 1990, 2014
