User Guide

6-38 Ampex 1308911-02
Model No.
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dd2_reset_drive DD-2 Utilities Manual Pages
6.12 dd2_reset_drive
NAME
dd2_reset_drive - reset the tape drive.
SYNOPSIS
dd2_reset_drive [ -f <device_special_file> ]
dd2_reset_drive -help [ help_type ]
DESCRIPTION
dd2_reset_drive resets the tape drive. This restores the drive’s configuration parameters to the
last saved values and clears any active I/O process, pending data, and status. The tape drive
performs its standard power-on self tests, after which the drive status indicators and display
begin normal operation. dst_reset() returns immediately, however. It doesn’t wait for the drive
to return to normal status.
dd2_reset_drive might do a hard reset or a bus device reset, depending on the host platform.
• A hard reset will reset all the devices on the scsi bus.
• A bus device reset will reset the tape drive without affecting other device on the scsi bus.
Both types of resets are functionally equivalent to manually resetting the tape drive. Using
dd2_reset_drive to perform a software reset is usually preferable to manually resetting the
tape drive because it gives the host system software better recovery opportunities.
dd2_reset_drive is restricted to the root user.
OPTIONS
-f < device_special_file >
Specifies the device special file to use for the operation (see Appendix B).
ARGUMENTS
-help [ help_type ]
Displays help on stderr and invalidates all other options, cancelling any other actions. Valid
keywords for the optional help_type specification are: stdout, revision, and v_revision.