Patent EP0341037A2 successfully refreshed from Google Patents.
EP0341037A2
Expired / Lapsed
EP
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Method of managing data in a data storage library
Assignee: International Business Machines Corp
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Filing: 1989-05-03
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Granted: —
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Expires: 2009-05-03
Abstract
Abstract A method for managing data in a data storage library, and a data storage hierarchy suitable therefor, is disclosed. The data storage hierarchy includes an optical library and separate manually operated shelf storage. The optical library includes at least one optical disk drive and a plurality of storage cells for the storage of optical disks. The optical library also includes automatic means for transferring optical disks from the storage cells to the optical disk drives in the library. The host data processor, upon determining that particular data is required to be stored in the optical library, first checks to determine if the optical disks in the optical library currently have the capacity for the storage of such data. If the capacity exists in the optical library there is no problem and the data is stored therein. If the optical library does not have the required capacity, or if the system operator so requires, the optical disk in the optical library which has least recently been mounted on an optical disk drive therein is destaged from the optical library to the manually operated shelf storage. Another disk may then be fed into the optical library for the storage of the data required therein.
Inventors
- 👤 Connie Mae Clark
- 👤 Warren Bruce Harding
- 👤 Horace Tin Sze Tang
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 00:49
CPC Classifications
G; G06; G06F; G06F12/00; G06F12/02; G06F12/08; G06F3/00; G06F3/06; G06F3/0601; G06F3/0668; G06F3/0671; G06F3/0683; G06F3/0686; G11; G11B; G11B27/00; G11B27/002; G11B27/10; G11B27/19; G11B27/28; G11B27/32; G11B27/327; G11B27/329; G11B27/36; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/215; G11B2220/218; G11B2220/40; G11B2220/41; G11B27/102; G11B27/105; Y; Y10; Y10S; Y10S707/00; Y10S707/99951; Y10S707/99952; Y10S707/99953; Y10S707/99955
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
A method for automatically destaging data in a data storage hierarchy connected to a host processor and having a data storage media library and other data storage media storage means, the data storage media library connected to said host processor and including data storage media, a plurality of devices for writing data to and reading data from data storage media mounted thereon, a plurality of media storage cells, and means for transferring the data storage media between the devices and the media storage cells, the other data storage media storage means capable of receiving data storage media from said data storage media library, comprising the machine-executed steps of: (a) determining which data storage medium in the data storage media library has least recently been mounted upon any one of the devices; and (b) providing an indication prompting the transfer, from the data storage media library to the other data storage media storage means, of the data storage medium least recently mounted on any one of the devices.
Claim 2
Independent Claim
167 words
A method for automatically destaging data in a data storage hierarchy connected to a host processor and having a data storage media library and other data storage media storage means, the data storage media library connected to said host processor and including data storage media, a plurality of devices for writing data to and reading data from data storage media mounted thereon, a plurality of media storage cells, and means for transferring the data storage media between the devices and the media storage cells, the other data storage media storage means capable of receiving data storage media from said data storage media library, comprising the machine-executed steps of: (a) determining which data storage medium in the data storage media library has least recently been mounted upon any one of the devices; and (b) providing an indication prompting the transfer, from the data storage media library to the other data storage media storage means, of the data storage medium least recently mounted on any one of the devices.
Claim 3
Dependent Claim
74 words
The method as claimed in claim 1 further comprising, prior to said step (b): (c) determining whether the data storage medium in the data storage media library which has least recently been mounted upon any one of the devices is currently mounted upon one of the devices; and if so (d) demounting the data storage medium in the data storage media library which has least recently been mounted upon any one of the devices.
Claim 4
Dependent Claim
52 words
The method as claimed in claim 2 further comprising steps of: (e) determining whether the the demounting the data storage medium in the data storage media library which has least recently been mounted upon any one of the devices has successfully been completed; and if not repeating step (b) of the devices.
Claim 5
Dependent Claim
134 words
A data storage library controlled by a host data processor comprising: a data storage media library (20) connected to the host data processor (50), said data storage media library including data storage media, a device (21, 22) for writing data to and reading data from data storage media mounted thereon, a plurality of media storage cells (23), and means (24) for transferring said data storage media between said device (21, 22) and said media storage cells; other data storage media storage means (30) for receiving data storage media from said data storage media library; and means in the host processor (50) for commanding the transfer, from said data storage media library (20) to said other data storage media storage means (30), of the data storage medium least recently mounted on said device (21, 22).
Claim 6
Dependent Claim
134 words
A data storage library controlled by a host data processor comprising: a data storage media library (20) connected to the host data processor (50), said data storage media library including data storage media, a device (21, 22) for writing data to and reading data from data storage media mounted thereon, a plurality of media storage cells (23), and means (24) for transferring said data storage media between said device (21, 22) and said media storage cells; other data storage media storage means (30) for receiving data storage media from said data storage media library; and means in the host processor (50) for commanding the transfer, from said data storage media library (20) to said other data storage media storage means (30), of the data storage medium least recently mounted on said device (21, 22).
Claim 7
Dependent Claim
85 words
A data storage library as claimed in claim 4 wherein: said data storage media library includes a plurality of said devices (21, 22) for writing data to and reading data from data storage media mounted thereon; and said means in the host data processor (50) provides an indication of the need to transfer, from the data storage media library (20) to said other data storage media storage means (30), of the data storage medium least recently mounted on any one of said devices (21, 22).
Claim 8
Dependent Claim
48 words
A data storage library as claimed in claim 4 or claim 5 further comprising means (40) for writing data to and reading data from data storage media outside of said data storage media library, said means (40) for writing and reading data connected to the host processor (50).
Claim 9
Dependent Claim
21 words
A data storage library as claimed in claims 4, 5 or 6 in which the data storage media are optical disks.
Claim 10
Dependent Claim
22 words
A data storage library as claimed in claim 7 in which the optical disks are of the write once, read many type.
References Cited (Backward Citations)
No citation records indexed.
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