The method includes identifying, by one or more computer processors, a grouping of elements in a storage system. The method further includes identifying, by one or more computer processors, a first element from the identified grouping of elements. The method further includes identifying, by one or more computer processors, a root unit of the first element from the identified grouping of elements. The method further includes determining, by one or more computer processors, a past usage history of computer resources for the identified root unit of the first element. The method further includes calculating, by one or more computer processors, a future usage of computer resources for the identified root unit based upon the determined past usage history.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A method for predicting storage capacity, the method comprising: identifying, by one or more computer processors, a grouping of elements in a storage system; identifying, by one or more computer processors, a first element from the identified grouping of elements; identifying, by one or more computer processors, a root unit of the first element from the identified grouping of elements; determining, by one or more computer processors, a past usage history of computer resources for the identified root unit of the first element; and calculating, by one or more computer processors, a future usage of computer resources for the identified root unit based upon the determined past usage history. 2. The method of claim 1, further comprising: calculating, by one or more computer processors, a future usage of computer resources for additional root units of the identified first element from the identified grouping of elements; and generating, by one or more computer processors, a future usage of computer resources for the identified first elements based upon the calculated future usage of computer resources of the identified root unit and additional root units of the identified first element. 3. The method of claim 1, wherein identifying the root unit of the first element comprises: identifying, by one or more computer processors, a hierarchy for the identified grouping of elements, wherein the hierarchy comprises one or more elements and one or more sub elements for elements in the identified grouping of elements; and determining, by one or more computer processors, a root unit of one of the one or more sub elements based upon a lowest level of the hierarchy of elements. 4. The method of claim 1, wherein calculating a future usage of computer resources for the identified root unit comprises: identifying, by one or more computer processors, a past usage history of computer resources of the identified root unit, wherein the past usage history of computer resources may comprise usage history of computer resources in one or more groupings of elements; and calculating, by one or more computer processors, the future usage history of computer resources based upon the identified past usage history of computer resources of the root unit in the one or more groupings of elements. 5. The method of claim 1, wherein identifying the root unit of the first element from the identified grouping of elements comprises: determining, by one or more computer processors, that the identified first elements are a root unit. 6. The method of claim 1, wherein determining a past usage history of computer resources for the identified root unit of the first element comprises: identifying, by one or more computer processors, metadata associated with the identified root unit of the first element. 7. The method of claim 1, further comprising: calculating, by one or more computer processors, a future usage of computer resources for the first element based upon one or more identified root units of the first element; calculating, by one or more computer processors, a future usage for additional element from the identified grouping of elements based upon the calculated future usage of computer resources for the additional element; and generating, by one or more computer processors, the future usage for the grouping of elements based upon the calculated future usage of computer resources for the first element and the additional elements from the identified grouping of elements. 8. A computer program product for predicting storage capacity, the computer program product comprising: one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising: program instructions to identify a grouping of elements in a storage system; program instructions to identify a first element from the identified grouping of elements; program instructions to identify a root unit of the first element from the identified grouping of elements; program instructions to determine a past usage history of computer resources for the identified root unit of the first element; and program instructions to calculate a future usage of computer resources for the identified root unit based upon the determined past usage history. 9. The computer program product of claim 8, further comprising program instructions to: calculate a future usage of computer resources for additional root units of the identified first element from the identified grouping of elements; and generate a future usage of computer resources for the identified first elements based upon the calculated future usage of computer resources of the identified root unit and additional root units of the identified first element. 10. The computer program product of claim 8, wherein program instructions to identify the root unit of the first element comprises program instructions to: identify a hierarchy for the identified grouping of elements, wherein the hierarchy comprises one or more elements and one or more sub elements for elements in the identified grouping of elements; and determine a root unit of one of the one or more sub elements based upon a lowest level of the hierarchy of elements. 11. The computer program product of claim 8, wherein program instructions to calculate a future usage of computer resources for the identified root unit comprises program instructions to: identify a past usage history of computer resources of the identified root unit, wherein the past usage history of computer resources may comprise usage history of computer resources in one or more groupings of elements; and calculate the future usage history of computer resources based upon the identified past usage history of computer resources of the root unit in the one or more groupings of elements. 12. The computer program product of claim 8, wherein program instructions to identify the root unit of the first element from the identified grouping of elements comprises program instructions to: determine that the identified first elements are a root unit. 13. The computer program product of claim 8, wherein program instructions to determine a past usage history of computer resources for the identified root unit of the first element comprises program instructions to: identify metadata associated with the identified root unit of the first element. 14. The computer program product of claim 8, further comprising program instructions to: calculate a future usage of computer resources for the first element based upon one or more identified root units of the first element; calculate a future usage for additional elements from the identified grouping of elements based upon the calculated future usage of computer resources for the additional element; and generate the future usage for the grouping of elements based upon the calculated future usage of computer resources for the first element and the additional elements from the identified grouping of elements. 15. A computer system for predicting storage capacity, the computer system comprising: one or more computer processors; one or more computer readable storage media; program instructions stored on the computer readable storage media for execution by at least one of the one or more computer processors, the program instructions comprising: program instructions to identify a grouping of elements in a storage system; program instructions to identify a first element from the identified grouping of elements; program instructions to identify a root unit of the first element from the identified grouping of elements; program instructions to determine a past usage history of computer resources for the identified root unit of the first element; and program instructions to calculate a future usage of computer resources for the identified root unit based upon the determined past usage history. 16. The computer system of claim 15, further comprising program instructions to: calculate a future usage of computer resources for additional root units of the identified first element from the identified grouping of elements; and generate a future usage of computer resources for the identified first elements based upon the calculated future usage of computer resources of the identified root unit and additional root units of the identified first element. 17. The computer system of claim 15, wherein program instructions to identify the root unit of the first element comprises program instructions to: identify a hierarchy for the identified grouping of elements, wherein the hierarchy comprises one or more elements and one or more sub elements for elements in the identified grouping of elements; and determine a root unit of one of the one or more sub elements based upon a lowest level of the hierarchy of elements. 18. The computer system of claim 15, wherein program instructions to calculate a future usage of computer resources for the identified root unit comprises program instructions to: identify a past usage history of computer resources of the identified root unit, wherein the past usage history of computer resources may comprise usage history of computer resources in one or more groupings of elements; and calculate the future usage history of computer resources based upon the identified past usage history of computer resources of the root unit in the one or more groupings of elements. 19. The computer system of claim 15, wherein program instructions to identify the root unit of the first element from the identified grouping of elements comprises program instructions to: determine that the identified first elements are a root unit. 20. The computer system of claim 15, further comprising program instructions to: calculate a future usage of computer resources for the first element based upon one or more identified root units of the first element; calculate a future usage for additional elements from the identified grouping of elements based upon the calculated future usage of computer resources for the additional elements; and generate the future usage for the grouping of elements based upon the calculated future usage of computer resources for the first element and the additional elements from the identified grouping of elements.