Reorganization of disk storage units

ARCHIVE supports the reorganization of disk storage units and the files they contain by means of saving with subsequent restoration. A reorganization is necessary if the files on a disk or a pubset become distributed over more and more extents. Without reorganization, further distribution may be impossible. Moreover, the processing of excessively fragmented files increases the number of input/output operations required.

The system support can implement reorganization with the aid of the following statements:

1. FILES ... 
   SAVE CHANGED=NO,... 
2. FILES ... 
   RESTORE REPLACE=ALLP,SPACE=REORG,... 

The files can also be deleted in the SAVE run via SAVE ERASE=ALLP, or between runs via commands.

You can reorganize pubsets conveniently during ongoing operation using the software product SPACEOPT.