Product manual

Installation

Data compression (switches 1 and 2)

If switch 1 is ON (the default setting), hardware data compression is enabled. If

switch 1 is OFF, hardware data compression is disabled.

If dip switch 2 is ON (the default setting) then SCSI commands can be used to

enable or disable hardware data compression. To prevent hardware data

compression from being enabled or disabled by SCSI commands, set dip switch 2 to

OFF.

Media-recognition system (switch 3)

The media-recognition system allows the drive to determine whether a given tape

cartridge conforms to the DDS tape standard. Use of non-DDS media may appear to

give satisfactory results, but the inferior specifications of such media can cause data-

integrity problems.

Switch 3 enables or disables the media-recognition system (MRS). If switch 3 is ON

(the default setting), the drive reads and writes to MRS media and reads from but

does not write to non-MRS media. If switch 3 is OFF, the drive reads or writes both

MRS and non-MRS media.

Power-on self-test enable/disable (switch 4)

Switch 4 enables or disables execution of power-on self-test diagnostics when the

drive is powered on. If switch 4 is ON (the default setting), the drive responds to

SCSI commands only after successful completion of the self-test (about 5 seconds).

If switch 4 is OFF, the drive does not perform a power-on self test.

Operating System configuration (switches 5 through 8)

Switches 5 through 8 are used to configure the drive for use with UNIX and other

non-Windows operating systems. See the

Scorpion 40 Installation Manual

for details.

The default setting for all four of these switches is ON.

SCSI Wide/Narrow (switch 9)

Switch 9 enables or disables SCSI Wide operation on the SCSI bus. When switch 9

is ON (the default setting), the drive is capable of operating in Wide (16-bit) SCSI

mode. When switch 9 is OFF, the drive will only operate as a Narrow (8-bit) SCSI

device.

Note: If switch 9 if set to OFF, the drive can only use SCSI ID values 0 through 7.

Inquiry string switch (switch 10)

Switch 10 is used to select the Vendor ID that the drive returns when queried with a

SCSI Inquiry command. When switch 10 is ON (the default setting), the Vendor ID

will be “SEAGATE DAT.” When switch 10 is OFF the Vendor ID will be “ARCHIVE

Python.” The “ARCHIVE Python” Vendor ID may be used by independent software

vendors to provide software compatibility with previous Seagate DDS tape drives.