Deletion of stored data

A storage controller comprising a processor arranged to:

• store data in a first location;
• maintain a record of backups of the stored data, the record defining an entry for each backup comprising details of the data that has been backed up and the location of the data that has been backed up;
• update the record of backups of the stored data with a new entry every time at least part of the stored data is stored at a new location different from the first location;
• receive an instruction to delete the stored data;
• access the maintained record of backups of the stored data;
• and
• transmit an instruction for each respective entry in the record of backups, the instruction comprising an instruction to delete the stored data at the respective location for the respective entry.

A computer program product for controlling a data processing system comprising a processor, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by the processor to cause the processor to:

• store data in a first location;
• maintain a record of backups of the stored data, the record defining an entry for each backup comprising the data that has been backed up and the location of the data that has been backed up;
• update the record of backups of the stored data with a new entry every time at least part of the stored data is stored at a new location different from the first location;
• receive an instruction to delete the stored data;
• access the maintained record of backups of the stored data;
• and
• transmit an instruction for each respective entry in the record of backups, the instruction comprising an instruction to delete the stored data at the respective location for the respective entry.