-917: Save/restore
write process crash - I/O error 
Explanation:
- An I/O error occurred while attempting to write to a backup device for a save statement.
- An I/O error occurred while attempting to write to a volume for a restore statement.
The restore or save statement was cancelled.
User Action:
The error message contains an additional error description which must be interpreted according to the operating system being used.
To find out and remove the error cause, consult the documentation on the operating system.