500300 Rev. U
SCSI Configuration
5-11
and is not changed by the DEF SCSI CONFIG. function in the Maintenance menu.
Depending upon the value set in this parameter, the tape drive will accept the
following density changes from the host:
VALUE
VALID DENSITIES
3402/4
1600, 3200
3410/2
800, 1600, 3200, 6250
3413/4
1600, 6250
3416/8
800, 1600, 3200, 6250
Setting the Model parameter to a value that does not reflect the actual model
number will not enable unsupported densities.
5.1.21
NRZI (Default = No LRC/CRC)
The NRZI parameter refers to the fate of the CRC and LRC bytes returned by the
drive when reading 800 CPI tapes.
•
LRC/CRC
- The drive will transfer the CRC and LRC bytes to the host;
•
NO LRC/CRC
- The drive will not transfer the CRC and LRC bytes to the host.
5.1.22
Read Bad Data (Default = Yes)
This parameter determines whether or not the drive will transfer data to the
initiator when that data contains an error.
YES
- The drive will transfer data that contains an error and will report a Media
Error Check Condition;
NO
- The drive will not transfer data that contains an error and will clear that data
from the buffer. It will also report a Media Error Check Condition.
NOTE
The Media Error Check Condition will occur in both cases but in the YES case, it may be
accompanied by an Incorrect Length Indicator (ILI).
5.1.23
Read EOT Stop (Default = No)
YES
- A read-ahead operation terminates when the EOT marker is sensed.
NO
- A read-ahead operation will not terminate when the EOT marker is sensed.
5.1.24
Read Ahead (Default = 2 FMK)
This option determines whether read-ahead operation is enabled and if so, what
condition terminates a read-ahead operation. Read-ahead is the process by which
the 1 megabyte buffer is kept filled with data whenever the tape drive receives a
