DELETED DATA SET PRESERVATION AND RECOVERY

A method for preserving and recovering a deleted data set is disclosed. In one embodiment, such a method includes, upon deleting a data set from a volume, gathering metadata associated with the data set. This metadata is saved in a volume table of contents (VTOC) associated with the volume. Upon wri...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Owin, Kenneth J, Huber, Harold S, Reed, David C, Rios, Esteban
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A method for preserving and recovering a deleted data set is disclosed. In one embodiment, such a method includes, upon deleting a data set from a volume, gathering metadata associated with the data set. This metadata is saved in a volume table of contents (VTOC) associated with the volume. Upon writing over a storage area occupied by the data set on the volume, the method deletes the metadata from the VTOC. Upon receiving an instruction to restore the data set, the method determines if the metadata is present in the VTOC. If the metadata is present in the VTOC, the method uses the metadata to rebuild control information associated with the data set and thereby restore the data set to the volume. A corresponding system and computer program product are also disclosed.