– Recommended.
Before diving into the "how," understanding the "why" is crucial. Backup Exec allows you to encrypt backup data using AES 128-bit, 192-bit, or 256-bit algorithms. The encryption key is never stored with the backup data itself for security reasons. backup exec import encryption key
You have two options:
A: Yes. The same key can be imported onto as many Backup Exec servers as needed to restore data. – Recommended
Maintain a written log of passphrases in a separate physical location from the backups. Proactively export the database key via Backup Exec Settings Database Maintenance and Security Passphrases backup exec import encryption key