Patent ID: 7783609
Filing Date: 2010-08-24
Classification: G06F

Abstract:
1. A method for storing a data set of a volume, comprising: storing a data set of a volume on a recordable medium; storing first information about the data set as an entry in a first portion of a predetermined amount of space in a volume table of contents (VTOC) for the volume and storing second information about the data set as an entry in a first portion of a predetermined amount of space in a virtual storage access method (VSAM) volume data set (VVDS) for the volume, whereby a second portion of the predetermined amount of space in the VTOC and a second portion of the predetermined amount of space in the VVDS remain unused; storing specified information about the data set as an entry in the unused space in a selected one of the VTOC and VVDS, wherein storing the specified information about the data set in unused space comprises: storing third information about the data set as an entry in the unused space in the VTOC if the data set is in a VSAM volume; storing fourth information about the data set as an entry in the unused space in the VVDS if the data set is in a non-VSAM volume; if the entry of first information about the data set in the VTOC is damaged, repairing the VTOC entry from the entry of the third information stored in the VVDS; and if the entry of second information about the data set in the VVDS is damaged, repairing the VVDS entry from the entry of the fourth information stored in the VTOC.