Patent ID: 7698516
Filing Date: 2010-04-13
Classification: G06F

Abstract:
1. A method of processing, in a storage system, a read request for a content unit having an identifier that is generated based, at least in part, on the content of the content unit, the method comprising: in response to the read request, sending a response based on a determination of whether a reflection for the content unit is stored on the storage system, the reflection indicating that the content unit previously was stored on the storage system but had been deleted, wherein the determination of whether the reflection for the content unit is stored on the storage system is made by searching for the content unit using the identifier; when both the reflection and the content unit are located, determining if the reflection was created after a time at which the content unit was stored on the storage system; and when it is determined that the reflection was created after the time at which the content unit was stored to the storage system, not returning the content unit in the response.