HSC Command

[Authorization: OPERATOR]

Use the HSC command to control and display information about the interface between CA VM:Tape and the StorageTek Automated Cartridge System (ACS). CA VM:Tape communicates with the Host Software Component (HSC) of the ACS.

The first time CA VM:Tape finds the HSC interface defined, it initializes with the interface halted; you must start the interface using the HSC command. CA VM:Tape checkpoints the status of the HSC interface and uses the check pointed status for subsequent initializations.

The interface normally does not require operator attention, even when the HSC is reinitialized. However, if a problem occurs with the HSC that prevents it from responding to requests from CA VM:Tape, you can halt the interface using the HSC command. If you halt the interface, pending mount requests wait until the HSC interface is available again and CA VM:Tape directs subsequent mount requests to non-ARM drives. If you want to redirect pending mount requests, use the CHANGE command. If you want to make ARM drives available for use as non-ARM drives while the interface is halted, use the DISARM command.

If you do not halt the interface, pending and subsequent mount requests wait until the HSC interface is available again.