NetBackup Support assistance for installations and upgrades is available for NetBackup 7.x on the Symantec Operational Readiness Tools (SORT) website. These tools will help determine the requirements for master, media and clients.
SORT also provides the ability to audit EEBs/Hotfixes in your environment to determine if they are resolved in a current version of NetBackup. You can access the EEB Auditor on SORT at the link below.
Symantec NetBackup 220.127.116.11 Release Notes 2014-12-10
NetBackup 7.6 General Availability 2013-12-21
NetBackup 18.104.22.168 Release Notes 2013-12-16
VMware backup using Symantec NetBackup: Top articles, videos, and guides 2012-09-27
Hyper-V backup using Symantec NetBackup: Top articles, videos, and guides 2012-09-27