Seagate 240 DDS-4 manual Power-on self-test enable/disable switch, Scsi Wide/Narrow switch

A-14 Scorpion 240 Autoloader Installation Manual

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 performs a power-on self test. 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, Novell, and Windows NT operating systems. These procedures are described starting on page A-40. 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 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.