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DD8
plus Version 2.20 - September 1998
VERIFYING A BACKUP
Once you have performed a backup, you may like to verify it to check that everything has backed
up correctly. This is done by pressing the VERIFY key. You will see this screen:
You should press YES (F5) to continue, NO (F6) to abort. As the verification takes place, you will
see this screen:
You may abort the process at any time by pressing the ESCAPE key.
NOTE: The VERIFY process does a comparison of what is on the source disk and what is on
tape and the idea is that the disk contents and the tape contents must be identical for the
verification to be successful. Because of this, the VERIFY process is best done immediately
after a backup. In this case, you should have no problems as the two media should have
identical contents. If, however, you make a new recording on the source disk or delete any-
thing from the source disk after the backup, the contents of both media will not be the same
and so you will receive messages such as “FILE XXXX MATCH NOT FOUND”. This is telling
you that either it has found something on the disk which does not correspond to what is on
tape (i.e. you may have made a new recording) or it has found something on tape which it
cannot find on the disk (i.e. you have maybe deleted something off disk).
It is not essential that you run the VERIFY process after a backup but, bearing in mind the
potentially serious implications of a faulty backup, it is highly recommended. However, you will
please note that the VERIFY process will take about two or three times as long as the backup
took so whilst it’s recommended you verify your backups, you might like to do it during a ‘quiet
moment’.
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