Not a problem as long as you don't try to push out a new client install
to these machines.  I have a new install of 3.4 and some of my servers
still run 2.5.1.  We had to create a second master on a 2.5.1 machine
using 3.2, then push the client software to my 2.5.1 servers, then point
the clients to the correct master running 3.4.  I have no problems with
these machines.

~JK

James Laurie wrote:
> 
> I recently received my copy of NBU 3.4 Datacenter (finally). I noticed
> that Solaris 2.5.1 and older are not supported.
> I'm currently using NBU 3.2 (with all my clients at 3.2) Some of my
> clients are using Solaris 2.5.1 (because of legacy application
> requirements). Does this mean that if I upgrade to NBU 3.4 that I will
> be unable to backup these clients which are running Solaris 2.5.1?
> Has anyone else encountered this? Would I be able to keep these clients
> at 3.2 and backup that way or is the OS the issue?
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-- 
=====================
Jeff Kennedy
Unix Administrator
AMCC
jkennedy AT amcc DOT com