Hello Harry,
Thankyou for your query.
You can schedule differential backups to run on Monday through Thursday, and schedule full backups on Friday.
You can also have a media rotation strategy where in maybe you can use one tape for differential backups for the entire week, protect it for 2 weeks from being overwritten and then use it in the third week again for differential backups allowing it to be overwritten.
You can use one tape for full backups every week and allow it to be protected against being overwritten for 3 weeks.
You can have two different media sets, which will help you configure the Append Periods and Overwrite Protection Periods, one for differential backups and one for full backups.
Apart from this if you have a library with more than one drives, you can force backup exec to use one drive only for differential and the other foll full backups.
Here are a few technotes which might help you figure out the optimal to suit your backup strategy.
1. The basics of Advanced Device and Media Management for Backup Exec for Windows Servers
http://support.veritas.com/docs/192265
2. An explanation of the "Overwrite Protection Period" and the "Append Period"
http://support.veritas.com/docs/237374
3. Creating, configuring, and targeting a backup job to a Robotic Library partition in Backup Exec 9.x and 10.0 for Windows Servers
http://support.veritas.com/docs/262055
For information on the recent VERITAS Backup Exec security vulnerabilities, including links to the downloads for the necessary hotfixes, please refer to the following document:
Patch summary for Security Advisories VX05-001, VX05-002, VX05-003, VX05-005, VX05-006, VX05-007
http://seer.support.veritas.com/docs/277429.htm
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