Attaching Virtual Tape Links via TCL

Subsequent to defining a virtual tape link, perform each step of this procedure on both ends of the link in order to attach the associated logical tape unit (LTU) devices together. In the case that remote systems comprise both ends of the link, one user at each system may be required.

  1. At each end of the link, select the associated LTU by executing this command line:

T-SELECT LTU#

 

T-SELECT

Applies to the writing tape unit on one side of the VTL and to the reading tape unit on the other.

LTU#

Number of the appropriate virtual tape device configured for use with the VTL. This was established when you configured the VTL previously.

  1. At each end of the link, open and verify the link by executing this command line:

T-ONLINE LTU

 

T-ONLINE

Applies to the writing tape unit on one side of the VTL and to the reading tape unit on the other.

LTU#

Number of the appropriate virtual tape device configured for use with the VTL. This was established during the Defining a VTL... procedure.

T-ONLINE opens the link and verifies that the user at the other end of the VTL has also done so. Either end of the link can issue this command first.

If the other end of the link is not yet open, this prompt displays:

DEVICE NOT READY

CONTINUE/QUIT (C/Q)?

As one end of the VTL likely precedes the other in this step, a user at one end is likely to receive this prompt. If and when this prompt appears, type C for CONTINUE.

The command executes, concluding the attachment process. Once you have attached the VTL successfully at both ends of the link, the VTL is ready for data transfer operations.

See Also

Using mvBase Tape Units