Technical information
Technician’s Handbook
166
Making an RSD Copy of the Hard Disk
The VOL BACKUP SYSUSER ON RSD command copies 
the operating software, updates, options, and database to 
the RSD. If a hard disk fails, you can restore the system 
software from the RSD to a replacement hard disk. See 
Recovering from a Corrupted Hard Disk on page 140.
The hard disk is dismounted by SYSUSER during this 
procedure. Loss of service results on non-redundant 
systems. 
To Back Up the Hard Disk of a Non-redundant System
1. Insert a blank, formatted RSD in the RSD drive.
See Formatting a Removable Storage Device (RSD) on 
page 163.
2. Enter:
VOL BACKUP SYSUSER ON RSD
When the copy is complete, this message appears:
FSinfo: Backed up volume on device RSD with name: 
SYSUSER
3. Remove the RSD from the RSD drive.
4. Label the RSD "MAIN Backup <volume name, 
dd/mm/yyyy>".
5. Reset the system. Service is lost.
6. Store the RSD in a safe place.










