International Business Machines Corporation

Robert Samuel Goncharsky

Richard Anthony Ripberger

James Arthur Fisher

Vincent K Allen

Mark Robert Bolin

An operator to host communications interface for managing a manual data storage library. A host processor controls Peripheral Data Storage Devices (PDSDs) in the library. Displayed operator interaction fields are presented by a graphical user interface on the screen of a display device connected to a library manager controller. Library manager program code loaded in program memory in the library manager controller is provided with interface logic, for communicating with external devices, as well as the PDSDs through the host processor. The operator communications interface is an integral component of the library and thus may be used for: alerting an operator of the need to mount or demount a particular data medium; alerting an operator with coherent and succinct messages thus improving the quality of messages provided to operators; and alerting an operator with a minimum number of messages. Additionally, the operator may use the communications interface to access the status of PDSDs and to schedule maintenance activities, such as cleaning of the PDSDs.

Graphical user communications interface for an operator in a manual data

A peripheral data storage subsystem has means for responding to a MOUNT command received from a host processor to create and mount a host-processor-addressable logical data-storage volume. Such logical data-storage volume has a serial number VOLSER indicated in the MOUNT command. The logical data volume is assigned a predetermined area of a physical data volume, such area being termed a partition. The illustrated embodiment shows a tape subsystem in which the partitions are accessed by a control using a reel tachometer that identifies segments of the tape. Each partition has a number of the tape segments. Controls and methods are described for initializing the subsystem for effecting the automatic volume creation, appending data into a logical volume, how logical volumes are made to be portable, moving logical volumes amongst diverse physical media, tape formats usable for such logical volumes, data base control of the logical volumes and volume creation processing. The physical volume in which one or more logical volumes reside is not host-processor addressable. Some physical volumes are ejectable from the data storage subsystem. The physical volumes storing the logical volumes are not ejectable. To eject a logical volume, it is copied from the storing physical volume to an ejectable physical volume.

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Tucson, AZ, United States of America

Robert Samuel Goncharsky