Dynamic Root Disk (DRD) is a software
tool containing a set of commands that enable you to clone a system
image to another hard disk and modify the image without shutting
down the system. DRD significantly reduces system downtime and allows
you to do software maintenance during normal business hours.
Using DRD, you can apply patches to the
cloned (inactive) system image without affecting the active system
image. When modifications are complete, you can reboot (restart) the
system using the modified system image. If you do not want to switch
images immediately, you can leave both images in place, ready to be
switched later.
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