In certain embodiments, a system comprises a memory and a processor communicatively coupled to the memory. The memory includes executable instructions that upon execution cause the system to generate, at a first time, a first snapshot capturing data stored in storage units of a storage device. The executable instructions upon execution cause the system to receive an indication to delete at least a portion of the data in the storage units and captured by the first snapshot, and to mark, in response to receiving the indication, the one or more storage units that store the at least a first portion of the data as available. The executable instructions upon execution cause the system to generate, at a second time subsequent to the first time, a second snapshot that omits the one or more storage units marked as available.