How to create one backup job to one tape for two Windows servers?
Backup Exec 2012.
With BE 2012, it will take two jobs... one for each server. But you can certainly get the second job to append to the same tape as the first job used.
See this document on how you backup multiple servers onto one tape
How to back up multiple servers to a single series of tapes in Backup Exec 2012
i confirm what larry fine said
just you have to be careful with the Overwrite protection and append period in you media set