Method and system for automated data storage system space allocation utilizing prioritized data set parameters

• US 5,790,886 A
• Filed: 12/05/1995
• Issued: 08/04/1998
• Est. Priority Date: 03/01/1994
• Status: Expired due to Term

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Allen, Stevan Charles
• Primary Examiner(s): Shin, Christopher B.
• Assistant Examiner(s): Kim, Ki S.
• Application Number:
  US08/567,835
• Time in Patent Office: 973 Days
• Field of Search: 395/444, 395/616, 395/497.01, 395/620, 395/621, 395/441, 395/449, 395/497.03, 395/600, 395/825, 395/836, 395/200.13, 364/243.45, 364/254.6, 364/283.2, 364/253.3
• US Class Current: 710/5
• CPC Class Codes: G06F 12/08 in hierarchically structured memory systems, e.g. virtual memory systems
• CPC Class Codes: G06F 3/0608 Saving storage space on storage systems
• CPC Class Codes: G06F 3/0644 Management of space entities, e.g. partitions, extents, pools
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]

Abstract

A method and system for automatically allocating space within a data storage system for multiple data sets which may include units of data, databases, files or objects. Each data set preferably includes a group of associated preference/requirement parameters which are arranged in a hierarchical order and then compared to corresponding data storage system characteristics for available devices. The data set preference/requirement parameters may include performance, size, availability, location, portability, share status and other attributes which affect data storage system selection. Data storage systems may include solid-state memory, disk drives, tape drives, and other peripheral storage systems. Data storage system characteristics may thus represent available space, cache, performance, portability, volatility, location, cost, fragmentation, and other characteristics which address user needs. The data set preference/requirement parameter hierarchy is established for each data set, listing each parameter from a "most important" parameter to a "least important" parameter. Each attempted storage of a data set will result in an analysis of all available data storage systems and the creation of a linked chain of available data storage systems representing an ordered sequence of preferred data storage systems. Data storage system selection is then performed utilizing this preference chain, which includes all candidate storage systems.

Claims

1. A method in a data processing system for automated data storage system space allocation within a data storage system having a plurality of disk data storage devices, said method comprising the data processing system implemented steps of:

associating a listing of characteristics representing disk data storage device performance and availability parameters with each of said plurality of disk data storage devices;

associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system;

comparing a list of data set parameters associated with a particular data set with said listing of characteristics associated with each disk data storage device in a specified hierarchical order in response to an attempted storages of said particular data set;

automatically storing said particular data set within a first selected one of said plurality of disk data storage devices in response to a determination that said first selected one of said plurality of disk data storage devices satisfies said entire listing of data set parameters; and

automatically storing said particular data set within a second selected one of said plurality of disk data storage devices in response to a determination that no disk data storage device satisfies said entire list of data set parameters and a determination that said second selected one of said plurality of disk data storage devices satisfies an optimal subset of said list of data set parameters within said specified hierarchical order.

2. The method for automated data storage system space allocation within a data storage system according claim 1, wherein said step of comparing a list of data set parameters associated with a particular data set with said listing of characteristics associated with each disk data storage device in a specified hierarchical order further comprises the step of creating a linked chain of available storage devices representing an ordered sequence of preferred disk data storage devices.

3. The method for automated data storage system space allocation within a data storage system according to claim 1, wherein said step of associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system comprises the step of associating a listing of data set parameters representing both required and preferred selectable data storage system characteristics with each of a plurality of data sets within said data processing system.

4. The method for automated data storage system space allocation within a data storage system according to claim 1, wherein said step of associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system includes the step of associating a parameter specifying a preferred data storage system performance characteristic with each of said plurality of data sets.

5. The method for automated data storage system space allocation within a data storage system according to claim 1, wherein said step of associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system includes the step of associating a parameter specifying a preferred data storage system size characteristic with each of said plurality of data sets.

6. The method for automated data storage system space allocation within a data storage system according to claim 1, wherein said step of associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system includes the step of associating a parameter specifying a preferred data storage system location characteristic each of said plurality of data sets.

7. A data processing system for enabling automated data storage system space allocation among a plurality of disk data storage devices within said data processing system, said data processing system comprising:

means for associating a listing of characteristics representing disk data storage device performance and availability parameters with each of said plurality of disk data storage devices;

means for associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system;

means for comparing a list of data set parameters associated with a particular data set with said listing of characteristics associated with each disk data storage device in a specified hierarchical order in response to an attempted storage of said particular data set;

means for automatically storing said particular data set within a first selected one of said plurality of disk data storage devices in response to a determination that said first selected one of said plurality of disk data storage devices satisfied said entire list of data set parameters; and

means for automatically storing said particular data set within a second selected one of said plurality of disk data storage devices in response to a determination that no disk data storage device satisfies said entire list of data set parameters and a determination that said second selected one of said plurality of disk data storage devices satisfies an optimal subset of said list of data set parameters within said specified hierarchial order.

8. The system for automated data storage system space allocation within a data storage system according to claim 7, wherein said means for comparing a list of data set parameters associated with a particular data set with said listing of characteristics associated with each disk data storage device in a specified hierarchical order further comprises the step of creating a linked chain of available storage devices presenting an ordered sequence of preferred disk data storage devices.

9. The system for automated data storage system space allocation within a data storage system according to claim 7, wherein said means for associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system comprises means for associating a listing of data set parameters representing both required and preferred selectable data storage system characteristics with each of a plurality of data sets within said data processing system.

10. The system for automated data storage system space allocation within a data storage system according to claim 7, wherein said means for associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system includes means for associating a parameter specifying a preferred data storage system performance characteristic with each of said plurality of data sets.

11. The system for automated data storage system space allocation within a data storage system according to claim 7, wherein said means for associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system includes means for associating a parameter specifying a preferred data storage system size characteristic with each of said plurality of data sets.

12. The system for automated data storage system space allocation within a data storage system according to claim 7, wherein said means for associating a listing of data set parameters representing selectable data storage system characteristics with each of a plurality of data sets within said data processing system includes means for associating a parameter specifying a preferred data storage system location characteristic each of said plurality of data sets.