With the large file sizes I am using a CD to do a daily back-up of the changed files. I have one CD per client.
What CD read and write methods are you using?
I have used DirectCD on "old" computer with my MATSHITA CD recorder. My new 4780 with the Samsung Drive does not seem to support DirectCD.
Adaptec DirectCD is a program that allows you to write files directly to a CD-Recordable (CD-R) or CD-ReWritable (CD-RW) disc in much the same way that you copy files to a floppy diskette or removable drive.
DirectCD provides a file system based on UDF v1.5 and writes data to the CD-R or CD-RW disc using packet writing technology. This file system gives you drive letter access to your CD-R or CD-RW drive.
I don't know if packet writing technology has gone by the waste-side.
