Question : Problem: Backup exec 10 - can this encrypt sdlt/lto tapes?

Does backup exec 10 have the ability to encrypt sdlt or lto tapes?
If so , how is this done?

If not can backup exec 11 do it?

Answer : Problem: Backup exec 10 - can this encrypt sdlt/lto tapes?

Backup Exec 10 does not have the ability to encrypt data.
Encryption was introduced in BE 11 and you can encrypt data irrespective of the tapes that you will be writing to.

Can Backup Exec for Windows Servers encrypt data on media?
http://support.veritas.com/docs/276522

Backup Exec 11d Best practices Guide: Software Encryption
http://support.veritas.com/docs/285648

How to create, replace or delete an Encryption Key in Backup Exec 11d ?
http://support.veritas.com/docs/285881

BTW Backup Exec 12 is out.So if are upgrading you might wanna upgrade to 12