"John J. Urbaniak" <jjurban(at)attglobal(dot)net> writes:
> I have a question about backups:
> Is it ok simply to zip the contents of E:\PGSQLDATA to a zip file and
> store this file on a CD or DVD?
Yes, *if* you shut down the postmaster while making the backup.
See
http://www.postgresql.org/docs/8.0/static/backup.html
for discussion --- what you propose is the "file system backup"
approach.
regards, tom lane