SSE Symantec Backup Exec 2010 SSE Symantec Enterprise Vault 9.0 SSE+ Symantec Enterprise Vault 9.0 STS Symantec Backup Exec 2010 STS Symantec Enterprise Vault 9.0 for Exchange SSE Symantec Backup Exec 2012 SSE Symantec Enterprise Vault 10 (March 2012) SSE+ Symantec Backup Exec 2012 SSE+ Symantec Enterprise Vault 10 (April 2012) SSE+ Symantec Backup Exec 3600 Appliance (mid-market) (September 2012) SSE+ Symantec Backup Exec 2014