When you upgrade from NetBackup 6.x to 7.0, Symantec recommends the following order of tasks:
– Back up the current 6.x NetBackup databases
– Upgrade NetBackup Access Control (if installed) on all master servers to be upgraded to 7.0
– Upgrade master servers
– Upgrade media servers
– Upgrade NetBackup Remote Administration Consoles
– Upgrade NetBackup clients
– Upgrade any NetBackup add-on products (such as language packs)

*Upgrading server software from version 6.x to 7.0*
NOTE:
-NetBackup 7.0 server software is 64-bit compatible only and cannot be installed on 32-bit systems.
-If you have 32-bit systems with NetBackup 6.x master servers that you want to upgrade, you must first migrate
the NetBackup catalog and databases to a supported 64-bit system.
-Starting with NetBackup 7.0, most of the add-on products and database agents are now installed with the NetBackup
server or the client package. Separate installation for these products is no longer needed.

#To upgrade server software from version 6.x to 7.0:
– back up the existing NetBackup 6.x databases
– Deactivate all NetBackup policies and storage lifecycle policies
– Deactivate disk staging storage units
>Netbackup Management > Storage Unit > Double Click Disk Staging Storage Unit > Staging Schedule > Exclude Dates
-Deactivate all media servers
>Media and Device Management > Devices > Host >select media server > deactivate

– For Solaris servers only, remove the “6.x versions of all add-on products” and database agents
(The script also offers to remove these earlier versions for you and Symantec recommends this method)

-Remove the current NetBackup server package by using the appropriate command:
for version 6.0 : pkgrm VRTSnetbp
for version 6.5    : pkgrm sYMCnetbp

The following prompt appears:
Are you doing this pkgrm as a step in an upgrade process?, enter Y

-Ensure that you have license keys for all of the NetBackup servers, clients, options, and agents that you ordered.
-Insert NBU DVD, then run “./install” script.

-After you have finished the upgrade, you can install and configureNetBackup Access Control (NBAC).

-After all servers are upgraded, reactivate the following in the order as shown:
-All media servers
-All disk staging storage units
-All NetBackup policies
-All storage lifecycle policies

===============================================
Upgrading clients after servers are upgraded:

The “update_clients” installation script lets you push client software to clients.
It does not let you push client software to a remote client that is also a NetBackup media or master server. You cannot push software this way because the server software and client binaries must be of the same version on a single host.
The update_clients installation script can determine the full client list that is configured on the server.When it is run without any parameters, it attempts to update all clients
(as determined by /usr/openv/netbackup/bin/admincmd/bpplclients).

If you do not want to upgrade all clients, you can specify a subset of clients. Use the hardware type and operating system parameters or use the -ClientList parameter.

You can run update_clients from a media server

A Windows host can only push client software toWindows clients.
A NetBackup UNIX server can only push client software to UNIX clients.

===============================================
Listing of Symantec NetBackup ™ 7.0 Manuals:
http://www.symantec.com/docs/TECH126327

Netbackup 7 FAQ
Netbackup 7 Software Compatibility List