Tandberg Data SLR7-140 PROGRAMMER Manual page 78

Current Mode Next Command
MOVE move-group
read-group
navigate-group
write-group
READ move-group
read-group
navigate-group
write-group
NAVIGATE move-group
read-group
navigate-group
write-group
Tandberg Data
Actions
No action. The move-group command is executed.
The buffer system is re-initialized (all buffered data is lost). The
Drive then calibrates the head position. The Density Code is
updated. The read-group command is executed.
The buffer system is re-initialized (all buffered data is lost). The
Drive then calibrates the head position. The Density Code is
updated. The navigate-group command is executed.
The Drive waits until the cartridge type is known. If the cartridge type
is suited for the selected tape format (Density Code) the buffer
system is re-initialized (all buffered data is lost). If the tape format
requires so the Drive then seeks the tape edge and writes the tape
reference burst. The Density Code is updated. The write-group
command is executed.
The Drive stops any read-ahead operation. The buffer system is re-
initialized (all read-ahead data is lost). The move-group command is
then executed.
No action. The read-group command is executed.
The Drive just enters NAVIGATE mode. The navigate-group
command is executed.
Since overwrite is illegal, the Drive will check if the tape is logically
positioned at end-of-data (EOD). If the tape is not at EOD then the
write-group command is terminated immediately with CHECK
CONDITION status and the Error Code is set to W
(Write After Read). The Drive continues to be in READ mode.
ERROR
If the tape is at EOD, or if overwrite is legal, the write-group com-
mand is executed. New data will be appended, beginning from the
current position.
The Drive stops any read-ahead operation. The buffer system is re-
initialized (all read-ahead data is lost). The move-group command is
then executed.
The Drive just enters READ mode. The read-group command is
executed.
No action. The navigate-group command is executed.
The Drive will check if the tape is logically positioned at end-of-data
(Logical End Of Partition). If the tape is at EOD then the write-group
command is executed. This will append new data after the last writ-
ten block on the tape. If the tape is not at EOD then the write-group
command is terminated immediately with CHECK CONDITION
status and the Error Code is set to W
Read). The Drive continues to be in NAVIGATE mode.
Table 4-5: Normal Mode Actions (to be continued...)
4-7 Tandberg SLR Product Line SCSI Functional Specifications
Commands
RITE APPEND
(Write After
RITE APPEND ERROR