5–16CLI Commands

ADD PASSTHROUGH

Creates a passthrough container. A passthrough container bypasses controller processing and allows the host to have direct access to the device. A passthrough device appears as if it were connected directly to the host bus rather than to the controller. Use passthrough containers to communicate with tape devices and tape loaders because they do not require the controller for optimum operation performance.

Passthrough units can be created for passthrough Command Console LUNs to allow SWCC to configure and monitor the controllers and devices on the backend in a remote mirroring implementation. The passthrough devices are automatically configured by the controller if they exist. The unit above the passthrough is not automatically configured by the controller.

Syntax

ADD PASSTHROUGH passthrough-name scsi-port-target-lun

Parameter

Names the device being added to or changed in a subsystem configuration. This is the same name used with the ADD UNIT command to create a host-addressable unit. You may want to use a name indicating the type of device is being added as a passthrough container, such as TAPE or LOADER.

The container name must start with a letter (A through Z) and may consist of a maximum of nine characters including letters A through Z, numbers 0 through 9, periods (.), dashes (-), or underscores (_).

IMPORTANT: It is common to name a tape passthrough device TAPEpttll, where pttll is the tape’s Port-Target-LUN address. Although other naming conventions are acceptable, this naming convention offers the advantage of presenting to the user both the type of device and its SCSI location in an intuitive manner.

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Compaq HSZ80 manual Parameter, 16CLI Commands, ADD Passthrough passthrough-name scsi-port-target-lun