Master and media servers can have differing patch levels, and even be at 
different versions, so long as the master server is at the highest 
version and patch levels.  I think this applies so long as nothing is 
more than one major release back.  I have a 5.1MP3A master with some 
4.5FP5 media servers and clients.  I've heard that 3.4 clients work, but 
is almost certainly not supported by Veritas.

Veritas did this for the very reason you cite:  So that you can do the 
upgrade without having to upgrade everything at once.  Just make sure 
your master server is at the highest release/patch level.

Jim VandeVegt wrote:

>I'm certain this probably is not a "supported configuration," but
>does anyone have any experience to share where you have ran a master
>server at a higher MP level than media servers?
>
>My specific situation: Solaris master, Solaris SAN media servers,
>Windows 2K Svr SAN media servers, and a bunch of network clients.
>Everything is at 5.0 MP1 right now. I want to go to MP5, but if it
>happens to require a reboot on Windows it is doubtful I'll be able to
>install the patch on every SAN media server at once.
>
>Subordinate question -- if the patch install on Windows 2000 Server
>says it wants to reboot, does NBU continue to work if you don't?
>
>Thanks for any information,
>
>
>---------------------------------
>
>Jim VandeVegt
>VandeVegt @t yahoo.com, Jim.VandeVegt @t PhysiciansMutual.com 
>There is no luck except where there is discipline.
>
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>


-- 
Jack L. Forester, Jr.
UNIX Systems Administrator, Stf
Lockheed Martin Information Technology
(304) 625-3946