Upgrading Solaris 10 update 4 to Solaris 10 update 11

Any input on upgrading a Solaris operating system?  I haven't done them since
my SunOS 4 days.

I have a T5220 with mirrored UFS boot disks running Solaris 10 Update 4.

I've retired all my other older Solaris 10 systems, but I want to update this
one to Solaris 10 Update 11. (All my other systems are running update 10 or
11)

I also want to migrate the boot disks from UFS to ZFS.  All the other file
systems are SAN attached ZFS.

The system does host one Zone, but if need be, I can save a few files, and
destroy it, and then re-create it later.

The Oracle documentation is confusing because it covers so many
"contingencies" and few "how-to's" I've seen are equally as vague.


--
Matthew Stier
Fujitsu Network Communications
Pearl River, NY 10965
Office: 845-731-2097
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