Avoiding duplicative storage of managed content

• US 8,600,948 B2
• Filed: 02/28/2006
• Issued: 12/03/2013
• Est. Priority Date: 09/15/2005
• Status: Active Grant

• Current Assignee: Open Text Corporation
• Original Assignee: EMC Corporation (Dell Technologies Inc.)
• Inventors: Kilday, Roger W.
• Primary Examiner(s): Ruiz, Angelica
• Application Number:
  US11/364,960
• Publication Number:
  US 20070061373A1
• Time in Patent Office: 2,835 Days
• Field of Search: 707/101, 707/103.R, 707/103.Y, 707/103.Z, 707/200, 707/203, 707/204, 707600-899, 707999001-999206
• US Class Current: 707/661
• CPC Class Codes: G06F 16/125 characterised by the use of retention policies retention policies for HSM systems G06F16/185
• CPC Class Codes: G06F 16/1748 De-duplication implemented within the file system, e.g. based on file segments de-duplication techniques in storage systems for the management of data blocks G06F3/0641
• CPC Class Codes: G06F 16/24557 Efficient disk access during query execution
• CPC Class Codes: G06F 3/0608 Saving storage space on storage systems
• CPC Class Codes: G06F 3/0641 De-duplication techniques
• CPC Class Codes: G06F 3/0671 In-line storage system

Abstract

Avoiding duplicative storage of managed content is disclosed. It is determined whether content associated with an object has been stored previously in an associated one of a plurality of storage locations used to store managed content with which the object is associated. If it is determined that the content has been stored previously in the storage location, the previously-stored content is associated with the object and the object, but not a duplicate copy of the content, is stored in the storage location.

Claims

1. A method for avoiding duplicative storage of content, comprising:

determining whether content associated with an object has been stored previously in a physical storage location with which the object is associated, the physical storage location being one of a plurality of physical storage locations each with a retention period;

in the event it is determined that the content has been stored previously in the physical storage location;

associating the previously-stored content with the object; and

storing the object, but not a duplicate copy of the content, in the physical storage location;

in the event it is determined that the content has not been stored previously in the physical storage location, storing the object and the content in the physical storage location, even if a copy of the content is stored already in another of the plurality of physical storage locations; and

upon receiving a retention notification that the retention period for the physical storage location has expired, using a low level command to bulk erase the entire contents including all objects and all content from the physical storage location without regard to its logical contents.

2. A method as recited in claim 1, wherein the object is linked to one or more other objects that together comprise a virtual document.

3. A method as recited in claim 1, wherein the object comprises data associated with a mail message.

4. A method as recited in claim 1, wherein the object comprises data attached to a mail message.

5. A method as recited in claim 1, wherein the physical storage location comprises a specified physical storage location with which the object is associated.

6. A method as recited in claim 1, wherein the physical storage location comprises a specified physical storage location associated with a set of objects with which the object is associated.

7. A method as recited in claim 1, wherein the physical storage location comprises one of a specified plurality of physical storage locations configured to store the managed content.

8. A method as recited in claim 1, further comprising deleting the content from the physical storage location upon expiration of a retention period associated with a last object associated with the content.

9. A method as recited in claim 1, further comprising first determining the object is to be stored in the physical storage location based on a date of receipt of the object.

10. A method as recited in claim 9, wherein the object comprises data attached to a mail message.

11. A method as recited in claim 10, wherein the physical storage location is a vault in which mail messages are stored based on having a common period in which they were received.

12. A method as recited in claim 1, further comprising retaining the content as stored in the physical storage location until the last retention period associated with a last object associated with the content expires.

13. A system for avoiding duplicative storage of content, comprising:

a processor configured to;

determine whether content associated with an object has been stored previously in a physical storage location with which the object is associated, the physical storage location being one of a plurality of physical storage locations each with a retention period;

in the event it is determined that the content has been stored previously in the physical storage location;

associate the previously-stored content with the object; and

store the object, but not a duplicate copy of the content, in the physical storage location;

in the event it is determined that the content has not been stored previously in the physical storage location, store the object and the content in the physical storage location, even if a copy of the content is stored already in another of the plurality of physical storage locations; and

upon receiving a retention notification that the retention period for the physical storage location has expired, use a low level command to bulk erase the entire contents including all objects and all content from the physical storage location without regard to its logical contents; and

a memory configured to provide instructions to the processor.

14. A system as recited in claim 13, wherein the physical storage location comprises a specified physical storage location with which the object is associated.

15. A system as recited in claim 13, wherein the physical storage location is one of a specified plurality of physical storage locations configured to store the managed content.

16. A system as recited in claim 13, wherein the processor is further configured to retain the content as stored in the physical storage location until a retention period associated with a last object associated with the content ends.

17. A system as recited in claim 13, wherein the processor is further configured to first determine the object is to be stored in the physical storage location based on a date of receipt of the object.

18. A computer program product for avoiding duplicative storage of content, the computer program product being embodied in a computer readable medium and comprising computer instructions for:

determining whether content associated with an object has been stored previously in a physical storage location with which the object is associated, the physical storage location being one of a plurality of physical storage locations each with a retention period;

in the event it is determined that the content has been stored previously in the physical storage location;

associating the previously-stored content with the object; and

storing the object, but not a duplicate copy of the content, in the physical storage location;

in the event it is determined that the content has not been stored previously in the physical storage location, storing the object and the content in the physical storage location, even if a copy of the content is stored already in another of the plurality of physical storage locations; and

upon receiving a retention notification that the retention period for the physical storage location has expired, using a low level command to bulk erase the entire contents including all objects and all content from the physical storage location without regard to its logical contents.

19. A computer program product as recited in claim 18, wherein the physical storage location comprises a specified physical storage location with which the object is associated.

20. A computer program product as recited in claim 18, wherein the physical storage location comprises one of a specified plurality of physical storage locations configured to store the managed content.

21. A computer program product as recited in claim 18, further comprising computer instructions for first determining the object is to be stored in the physical storage location based on a date of receipt of the object.

22. A computer program product as recited in claim 18, further comprising computer instructions for retaining the content as stored in the physical storage location until the last retention period associated with a last object associated with the content expires.