Reorganizing disk storages

Pubsets can be reorganized by performing a backup followed by restoration. Such a reorganization will be required whenever the distribution of the disk files over an increasing number of extents reaches the point where the files cannot be extended because the maximum number of extents has been reached. With HSMS all files can be written back contiguously, thus reorganizing the storage space:

//RESTORE-FILES REPLACE-FILES-AND-JV=*YES(REORGANIZE-SPACE=*YES)

By additionally specifying the operand RELEASE-UNUSED-SPACE=*YES, storage space requirements can be reduced even further: any pages behind the file’s last-page pointer, i.e. pages allocated but not occupied, are released.