SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

The current object state of the tape drive. For a list of tape drive states, see “TAPE Object States”
(page 39).
State
The processor number and PIN of current primary tape process.Primary PID
The processor number and PIN of current backup tape process.Backup PID
The current status of the device. Values can be:DeviceStatus
The tape drive is not ready to be used.NOT READY
The tape drive is online and away from beginning of tape.ONLINE
The tape drive is online and at beginning of tape.ONLINE, BOT
Tape I/O Process Information
Always blank.Library File
The program file name of the tape process.Program File
Current Settings:
Indicates an attribute whose value you can change by using an ALTER TAPE command.*
Shows whether an automatic cartridge loader (ACL) is installed.ACL
The level of buffering provided by the tape process. Buffering can increase the performance of a
write operation when no errors occur. Values can be:
Buffer Level
The buffering level is unsupported or unknown.UNSUPPORTED
No buffering is performed on tape writes (every record written to the tape
process is passed to the tape drive immediately).
RECORD
File buffering is performed on tape writes (records are passed to the tape
drive only when a file mark is written). Therefore, an application might
FILE
have to rewrite all records written since the last file mark if an unrecoverable
error occurs during a write to tape.
Reel buffering is performed on tape writes (even file marks are buffered).
Therefore, that an application might have to rewrite the whole reel if an
unrecoverable error occurs during a write.
REEL
Shows the current checksum method in use. Values can be:Checksum Mode
Checksum processing is performed when a record is read (the checksum of
the record is appended to the record after it is read). The tape process
CHECKSUM
computes the checksum of the record and appends the checksum to the end
of the record. On a successful read, an FESUMREADOK message is returned
(instead of an FEOK).
No special checksum processing is performed.NORMAL I/O
For cartridge tape drives, shows whether compression is configured. This setting is ignored by
5194 tape drives because compression is always on. For other tape drives, this field is not
applicable (N/A).
Compression
The configured tape density in bits per inch (bpi) of a 5170 tape drive.Density
The type of media in the tape drive. The type of media can be UNKNOWN, 9-TRACK, 18-TRACK,
or 36-TRACK.
Media Type
The maximum concurrent opens to the tape process.Opens
The configured record size for the tape drive (in bytes).RecSize
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