This product is licensed per terabyte of data.

Symantec Backup Exec 2012 is one integrated product that protects virtual and physical environments, simplifies both backup and disaster recovery, and offers unmatched recovery capabilities. Powered by Symantec V-Ray technology, Backup Exec 2012 restores entire servers, critical Microsoft applications, and VMware or Microsoft Hyper-V virtual environments to dramatically minimize business downtime.

Note: This is a Renewal license. If you currently own a license for this product AND you are still under your support period, then you can renew your license at a discount cost. (If your support period has ended, you are not eligible for the Renewal price - please check out the Upgrade licenses)