Patent US1426921A successfully refreshed from Google Patents.
US5121483A
Expired / Lapsed
US
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Virtual drives in an automated storage library
Assignee: International Business Machines Corp
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Filing: 1990-05-21
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Granted: 1992-06-09
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Expires: 2010-05-21
Abstract
Abstract A method for servicing a mount request in an automated storage library in which all of the peripheral storage devices therein are occupied and which permits an active data storage medium to be temporarily demounted and subsequently remounted in any subsequently available peripheral storage device is disclosed. To service a mount request requiring that a data storage medium be demounted, the access information for the data storage medium to be demounted is first retained. After demounting and servicing of the mount request, the retained access information is used to permit remounting of the previously mounted data storage medium in any subsequently available peripheral storage device, thereby minimizing the risk of delay in remounting. The method also allows for optional parameters to prevent temporary demounting in an automated storage library, or to prevent temporary demounting of particular data storage media. An automated storage library and program product employing the method are also disclosed.
Inventors
- 👤 Christopher J. Monahan
- 👤 Mary L. Monahan
- 👤 Dennis L. Willson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:49
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/0601; G06F3/0602; G06F3/0604; G06F3/0628; G06F3/0629; G06F3/0631; G06F3/0662; G06F3/0664; G06F3/0668; G06F3/0671; G06F3/0683; G06F3/0686; G11; G11B; G11B17/00; G11B17/22; G11B17/228; G11B27/00; G11B27/002; G11B2220/00; G11B2220/20; G11B2220/40; G11B2220/41; G11B27/10; G11B27/34; G11B27/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
127 words
A method for servicing a request to mount a first, unmounted data volume in an automated storage library having a plurality of occupied peripheral storage devices therein, the method comprising machine-executed steps of: retaining access information for a second data volume mounted in a first one of the peripheral storage devices; physically demounting the second data volume even though access to the second data volume has not been completed; mounting the first unmounted data volume in the first one of the peripheral storage devices; remounting the second data volume in any one of the peripheral storage devices that subsequently becomes available after a data volume mounted therein is demounted; and resuming access to the second data volume by recalling the access information for the second data volume.
Claim 2
Independent Claim
127 words
A method for servicing a request to mount a first, unmounted data volume in an automated storage library having a plurality of occupied peripheral storage devices therein, the method comprising machine-executed steps of: retaining access information for a second data volume mounted in a first one of the peripheral storage devices; physically demounting the second data volume even though access to the second data volume has not been completed; mounting the first unmounted data volume in the first one of the peripheral storage devices; remounting the second data volume in any one of the peripheral storage devices that subsequently becomes available after a data volume mounted therein is demounted; and resuming access to the second data volume by recalling the access information for the second data volume.
Claim 3
Dependent Claim
39 words
The method of claim 1 wherein the aforementioned steps only occur if a virtual drive option for the automated storage library, indicated by a virtual drive option parameter stored therein, is enabled, the request to mount otherwise being rejected.
Claim 4
Dependent Claim
43 words
The method of claim 1 wherein the aforementioned steps only occur is a virtual eligibility option for the second data volume, indicated by a virtual eligibility option parameter stored in the automated storage library, is enabled, the request to mount otherwise being rejected.
Claim 5
Dependent Claim
29 words
The method for servicing a request according to claim 1 wherein the second data volume is remounted in a peripheral storage device other than the first peripheral storage device.
Claim 6
Independent Claim
196 words
A method for servicing a request to mount a first, unmounted data volume in an automated storage library when all peripheral storage devices therein are occupied, the automated storage library including storage of a virtual drive option for the automated storage library and a virtual eligibility option for a second data volume mounted in a first one of the peripheral storage devices, the method comprising machine-executed steps of: determining if both the virtual drive option and the virtual eligibility option are enabled; if both the virtual drive option and the virtual eligibility option are not enabled: rejecting the request to mount; if both the virtual drive option and the virtual eligibility option are enabled; retaining access information for the second data volume; physically demounting the second data volume even though access to the second data volume has not been completed; mounting the first data volume in the first one of the peripheral storage devices; remounting the second data volume in one of the peripheral storage devices that subsequently becomes available after a data volume mounted therein is demounted; and resuming access to the second data volume by recalling the access information for the second data volume.
Claim 7
Independent Claim
196 words
A method for servicing a request to mount a first, unmounted data volume in an automated storage library when all peripheral storage devices therein are occupied, the automated storage library including storage of a virtual drive option for the automated storage library and a virtual eligibility option for a second data volume mounted in a first one of the peripheral storage devices, the method comprising machine-executed steps of: determining if both the virtual drive option and the virtual eligibility option are enabled; if both the virtual drive option and the virtual eligibility option are not enabled: rejecting the request to mount; if both the virtual drive option and the virtual eligibility option are enabled; retaining access information for the second data volume; physically demounting the second data volume even though access to the second data volume has not been completed; mounting the first data volume in the first one of the peripheral storage devices; remounting the second data volume in one of the peripheral storage devices that subsequently becomes available after a data volume mounted therein is demounted; and resuming access to the second data volume by recalling the access information for the second data volume.
Claim 8
Dependent Claim
202 words
An automated storage library comprising: a plurality of internal peripheral storage devices, each internal peripheral storage device capable of having a data volume mounted therein; a plurality of storage cells, each storage cell capable of storing one data storage medium therein, each data storage medium including at least one data volume; a picker for transferring a data storage medium between any internal peripheral storage device and any storage cell; and machine-executed means coupled for issuing commands to the picker for servicing a request to mount a first, unmounted data volume in an automated storage library when all of the peripheral storage devices therein are occupied, the request serviced by: retaining access information for a second data volume mounted in a first one of the peripheral storage devices; physically demounting the second data volume even though access to the second data volume has not been completed; mounting the first data volume in the first one of the peripheral storage devices; remounting the second data volume in any one of the peripheral storage devices that subsequently becomes available after a data volume mounted therein is demounted; and resuming access to the second data volume by recalling the access information for the second data volume.
Claim 9
Dependent Claim
202 words
An automated storage library comprising: a plurality of internal peripheral storage devices, each internal peripheral storage device capable of having a data volume mounted therein; a plurality of storage cells, each storage cell capable of storing one data storage medium therein, each data storage medium including at least one data volume; a picker for transferring a data storage medium between any internal peripheral storage device and any storage cell; and machine-executed means coupled for issuing commands to the picker for servicing a request to mount a first, unmounted data volume in an automated storage library when all of the peripheral storage devices therein are occupied, the request serviced by: retaining access information for a second data volume mounted in a first one of the peripheral storage devices; physically demounting the second data volume even though access to the second data volume has not been completed; mounting the first data volume in the first one of the peripheral storage devices; remounting the second data volume in any one of the peripheral storage devices that subsequently becomes available after a data volume mounted therein is demounted; and resuming access to the second data volume by recalling the access information for the second data volume.
Claim 10
Dependent Claim
39 words
The automated storage library of claim 6 wherein the machine-executed means for servicing a mount request only operates if a virtual drive option for the automated storage library, indicated by a virtual drive option parameter stored therein, is enabled.
Claim 11
Dependent Claim
44 words
The automated storage library of claim 6 wherein the machine-executed means for servicing a mount request only operates if a virtual eligibility option for the second data storage volume, indicated by a virtual eligibility option parameter stored in the automated storage library, is enabled.
References Cited (Backward Citations)
US3028580A
Cited
US4153931A
Cited
US3955180A
Cited
US4121286A
Cited
US4041463A
Cited
US4310883A
Cited
US4271489A
Cited
US4352165A
Cited
US4419740A
Cited
US4445190A
Cited
JPS58186252A
Cited
US4769782A
Cited
US4527262A
Cited
US4601012A
Cited
US4614474A
Cited
US4779252A
Cited
US4766581A
Cited
US4654727B1
Cited
US4654727A
Cited
US4706233A
Cited
EP0206565A2
Cited
US4730249A
Cited
US4792934A
Cited
JPS63136356A
Cited
US4879615A
Cited
US4864511A
Cited
US4932826A
Cited
US4864438A
Cited
US4876662A
Cited
US4945428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |