Seagate DAT Drive DDS Manuel D'installation page 12

A-10 Seagate DAT Drive Installation Manual—English
Switch 4 enables or disables media-recognition system
(MRS) mode. If switch 4 is ON (the default setting), the drive
reads or writes both MRS and non-MRS 4-mm media. If
switch 4 is OFF, the drive reads and writes to MRS media
and reads from but does not write to 4-mm media.
Parity check enable/disable (switch 5)
Switch 5 enables or disables parity checking for the SCSI
bus. If switch 5 is ON, parity checking is enabled. If switch 5
is OFF (the default setting) parity checking is disabled, but
parity is still generated by the drive.
DDS pass-through mode enable/disable (switch 6)
If switch 6 is OFF (the default setting), DDS pass-through
data compression is enabled. If switch 6 is ON, data
compression is disabled.
Note: The setting of switch 6 can be overridden if the
host computer issues the appropriate SCSI Mode Select
command.
Inquiry string (switch 7)
If switch 7 is ON, the drive generates a SCSI inquiry string
that identifies it as a Seagate DAT drive. However, for
compatibility with older software and operating systems, the
drives can be configured as Archive Python drives by setting
dip switch 7 to OFF.
Power-on self-test enable/disable (switch 8)
Switch 8 enables or disables execution of power-on self-test
diagnostics when the drive is powered on. If switch 8 is OFF
(the default setting), the drive does not perform a power-on
self test. If switch 8 is ON, the drive responds to SCSI
commands only after successful completion of the self-test
(about 5 seconds).
Switches 9 and 10
Not all drives come with dip switches 9 and 10. These
switches are used to configure the drive for use with UNIX
operating systems, as described on page A-27.