Digital Equipment HSZ40, Reference Manual, Page: 20 / 118

2–8 ADD PASSTHROUGH
ADD PASSTHROUGH
Creates a passthrough container (command disk) to allow direct access to a device. HSZ
controllers use passthrough containers to communicate with tape drives and tape loaders.
Format
For tape drives and loaders attached to HSZ controllers:
ADD PASSTHROUGH
passthrough-name SCSI-location
Parameters
passthrough-name
Specifies a name for the passthrough container. You use this name with the
ADD UNIT
command to identify the passthrough container as a host-addressable unit. You may want
to use a name that indicates the type of device served by the passthrough container, such as
“TAPE” or “LOADER.”
The name must start with a letter (A–Z) and can then consist of up to eight more
characters made up of letters A-Z, numbers 0-9, periods (.), dashes (-), or underscores (_),
for a total of nine characters.
SCSI-location
The SCSI-location parameter assigns a PTL address to the drive or loader. See page 1–5,
Specifying the Device PTL, for an explanation of the PTL numbering system.