AUTOMATED DATA STORAGE LIBRARY WITH MULTIPURPOSE SLOTS PROVIDING USER-SELECTED CONTROL PATH TO SHARED ROBOTIC DEVICE

• US 20020169521A1
• Filed: 05/10/2001
• Published: 11/14/2002
• Est. Priority Date: 05/10/2001
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Goodman, Brian G., Jesionowski, Leonard G.
• Granted Patent: US 6,487,474 B1
• Time in Patent Office: Days
• US Class Current: 700/245
• CPC Class Codes: G06F 3/0622 in relation to access
• CPC Class Codes: G06F 3/0637 Permissions
• CPC Class Codes: G06F 3/0686 Libraries, e.g. tape libraries, jukebox
• CPC Class Codes: G11B 17/228 Control systems for magazines G11B17/225 takes precedence
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/41 Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
• CPC Class Codes: G11B 27/002 Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing; transfer of record carriers from magazine G11B15/68, G11B17/10; G11B17/22
• CPC Class Codes: G11B 27/36 Monitoring, i.e. supervising the progress of recording or reproducing for digital recording G11B20/00 and s.gr.; for monitoring, testing or measuring of TV recorders of the type covered by H04N5/76 and subgroups, see H04N17/06

Abstract

A data storage library features multipurpose slots each configured to receive a media drive (operable to read/write data from/to media removably loaded into the media drive) a command relay port (operable to convey media transport signals from a host to a shared robotic media transport device), or various other modules. The robotic device is programmed to recognize whether each slot is empty or whether it is filled with a component such as a media drive or a command relay port, and to thereafter communicate with the occupant appropriately.

Claims

1. A method for operating a data storage/retrieval library that includes a robotic media transport device and a plurality of multipurpose slots, the method comprising:

for each slot, determining a state of each slot comprising one of the following conditions;

the slot is occupied by a media drive, the slot is occupied by a relay module configured to perform operations including relaying media transport commands from one or more hosts to the robotic media transport device, the slot is unoccupied;

for each slot occupied by a relay module, the transport device receiving host media transport commands from the relay module and responsive to the received commands, performing operations comprising transporting media items among media locations comprising storage bins and media drives located in the slots.

2. The method of claim 1, the determining operation comprising recognizing whether the slot is occupied by a component from a list including one or more of the following:

switch, hub, gateway, router, network storage, Ethernet module, storage device, host, storage emulator, combination media drive and command relay port.

3. The method of claim 1, the operations responsive to the received commands further comprising:

restricting host access to components of the library according to predefined logical partitions, each partition exclusively associated with a different set of one or more relay modules occupying the slots, each partition defining a different group of one or more of the following;

one or more media items, one or more media drives, one or more media storage locations.

4. The method of claim 3, where the operation of restricting host access comprises:

the transport device instructing one or more slot occupants to restrict host access according to the predefined logical partitions;

the instructed slot occupants restricting host access according to the predefined logical partitions.

5. The method of claim 1,

the transport device having access to a configuration record identifying one or more partitions, each partition exclusively associated with a different set of one or more relay modules occupying the slots, each partition including a different group of one or more of the following:

one or more media items, one or more media drives, one or more media storage locations;

the operations responsive to the received commands further comprising, for all media transport commands arriving from a particular relay module, limiting host access to components of the partition associated with that relay module.

6. The method of claim 1, further comprising:

placing one or more media drives into respective ones of the slots.

7. The method of claim 1, further comprising:

placing one or more relay modules into respective ones of the slots.

8. The method of claim 1, the determining operation comprising at least one of the following:

the transport device exchanging messages with an occupant of one or more slots;

the transport device detecting electrical configuration of an occupant of one or more slots;

the transport device receiving operator input specifying the state of one or more slots;

the transport device utilizing an optical reader to detect one or more optical features displayed by an occupant of one or more slots;

the transport device attempting to load a media item into an occupant of one or more slots, and ascertaining the state of the slots by results of the attempts;

the transport device conducting wireless scanning of electromagnetic indicia of an occupant of one or more slots;

the transport device attempting to touch an occupant of one or more slots, and ascertaining the state of the slots by results of the attempted touch.

9. The method of claim 1, wherein:

the operations further comprise the transport device receiving a mapping between components of the library and one or more partitions, each partition exclusively associated with one or more relay modules;

the transporting operation further comprises dishonoring host commands that arrive via one relay module and seek access to library components of a partition associated with another relay module.

10. A method for operating a data storage/retrieval library that includes a robotic media transport device and a plurality of multipurpose slots, the method comprising:

for each slot, determining a state of each slot comprising one of the following conditions;

the slot is occupied by a media drive, the slot is occupied by a command relay port, the slot is occupied by combination media drive and command relay port, the slot is unoccupied;

for each slot occupied by a command relay port and for each slot occupied by a combination media drive and command relay port, the transport device receiving host media transport commands therefrom and responsive to the received commands, performing operations comprising transporting media items among media locations comprising storage bins and media drives located in other slots.

11. A signal-bearing medium tangibly embodying a program of machine-readable instructions executable by a digital processing apparatus to perform operations to manage a data storage/retrieval library that includes a robotic media transport device and a plurality of multipurpose slots, the operations comprising:

for each slot, determining a state of each slot including one of the following conditions;

the slot is occupied by a media drive, the slot is occupied by a relay module configured to perform operations including relaying media transport commands from one or more hosts to the robotic media transport device, the slot is unoccupied;

for each slot occupied by a relay module, the transport device receiving host media transport commands from the relay module and responsive to the received commands, performing operations comprising transporting the media items among media locations comprising storage bins and media drives located in the slots.

14. The apparatus of claim 13, the transport device being programmed such that the determining operation comprises recognizing whether the slot is occupied by a component from a list including one or more of the following:

switch, hub, gateway, router, network storage, Ethernet module, storage device, host, storage emulator, combination media drive and command relay port.

15. The apparatus of claim 13, the transport device being further programmed such that the operations responsive to the received commands further comprise:

restricting host access to components of the library apparatus according to predefined logical partitions, each partition exclusively associated with a different set of one or more relay modules occupying the slots, each partition defining a different group of one or more of the following;

one or more media items, one or more media drives, one or more media storage locations.

16. The apparatus of claim 15, where the operation of restricting host access comprises:

the transport device identifying predefined logical partitions to one or more slot occupants and instructing the slot occupants to restrict host access to library components according to the predefined logical partitions.

17. The apparatus of claim 16, further comprising:

one or more modules each residing in one of the slots, each module programmed to carry out transport device instructions to restrict host access to library components according to logical partitions identified by the transport device.

18. The apparatus of claim 13,

the transport device having access to a configuration record identifying one or more partitions, each partition exclusively associated with a different set of one or more relay modules occupying the slots, each partition including a different group of one or more of the following:

one or more media items, one or more media drives, one or more media storage locations;

the transport device being programmed such that the operations responsive to the received commands further comprise;

for all media transport commands arriving from a particular relay module, limiting host access to components of the partition associated with that relay module.

19. The apparatus of claim 13, further comprising:

one or more media drives occupying respective ones of the slots.

20. The apparatus of claim 13, further comprising:

one or more relay modules occupying respective ones of the slots.

21. The apparatus of claim 20, the relay modules comprising at least one of the following:

command relay ports, combination media drive and command relay port units.

22. The apparatus of claim 13, further comprising one or more of the following installed in one or more corresponding slots:

switch, hub, gateway, router, network storage, Ethernet module, storage device, host, storage emulator, combination media drive and command relay port.

23. The apparatus of claim 13, further comprising:

one or more relay modules, each relay module comprising an interface to translate between a first format utilized by the hosts'"'"' media transport commands and a second format utilized by the robotic media transport device.

24. The apparatus of claim 13, the determining operation comprising at least one of the following:

the transport device exchanging messages with an occupant of one or more slots;

the transport device detecting electrical configuration of an occupant of one or more slots;

the transport device receiving operator input specifying the state of one or more slots;

the transport device utilizing an optical reader to detect one or more optical features displayed by an occupant of one or more slots;

the transport device attempting to load a media item into an occupant of one or more slots, and ascertaining the state of the slots by results of the attempts;

the transport device conducting wireless scanning of electromagnetic indicia of an occupant of one or more slots;

the transport device attempting to touch an occupant of one or more slots, and ascertaining the state of the slots by results of the attempted touch.

25. The apparatus of claim 13, the transport device further comprising:

command set storage containing one or more software functions compatible with predefined media drives and one or more software functions compatible with predefined relay modules.

26. The apparatus of claim 13, wherein the transport device is programmed such that the operations further comprise:

the transport device receiving a mapping between components of the library apparatus and one or more partitions, each partition exclusively associated with one or more relay modules;

dishonoring host commands that arrive via one relay module and seek access to library components of a partition associated with another relay module.

27. The apparatus of claim 13, each slot comprising:

a bay sized to slidably receive one of the following;

a media drive of predetermined configuration, a relay module of predetermined configuration;

one or more connectors configured to connect an occupant of the bay to the transport device.

12. A logic circuit of multiple interconnected electrically conductive elements configured to perform operations to manage a data storage/retrieval library that includes a robotic device and a plurality of multipurpose slots, the operations comprising:

for each slot, determining a state of each slot including one of the following conditions;

the slot is occupied by a media drive, the slot is occupied by a relay module configured to perform operations including relaying media transport commands from one or more hosts to the robotic media transport device, the slot is unoccupied;

for each slot occupied by a relay module, the transport device receiving host media transport commands from the relay module and responsive to the received commands, performing operations comprising transporting the media items among media locations comprising storage bins and media drives located in the slots.

13. A data storage/retrieval library apparatus, comprising:

a plurality of multipurpose slots;

a robotic media transport device programmed to perform library management operations comprising;

for each slot, determining a state of each slot including one of the following conditions;

the slot is occupied by a media drive, the slot is occupied by a relay module configured to perform operations including relaying media transport commands from one or more hosts to the robotic media transport device, the slot is unoccupied;

for each slot occupied by a relay module, receiving host media transport commands from the relay module and responsive to the received commands, performing operations comprising transporting the media items among media locations comprising media storage bins and media drives located in other slots.

28. A data storage/retrieval library apparatus, comprising:

multiple slot means each for detachably receiving occupants of predetermined configuration;

robotic media transport means for performing library management operations comprising;

for each slot means, determining a state of each slot means including one of the following conditions;

the slot means is occupied by a media drive, the slot means is occupied by a relay module configured to perform operations including relaying media transport commands from one or more hosts to the robotic media transport device, the slot means is unoccupied;

for each slot means occupied by a relay module, receiving host media transport commands from the relay module and responsive to the received commands, performing operations comprising transporting the media items among media locations comprising media storage bins and media drives located in the slot means.