RE: Windows Integration and Longhorn

As was mentioned earlier, this is a multi-master system, so that any DC that
has succesfully replicated as of order 24 should update the freshly restored DC
when it erroneously asserts that the next order number is 22. My understanding
is that "important" transactions are made atomic via the use of the
FSMO(flexible single master of operations) roles so that there is always a
definitive answer available as to the most current revision.

If the DC that you are restoring holds FSMO roles, I think you may need to
transfer them before a restore. I'm not sure this is the case, but either way
I can hear the moderator tapping out a meme instructing us to move this off
list.

Josh

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Walden H. Leverich
Sent: Wednesday, April 04, 2007 9:00 AM
To: Midrange Systems Technical Discussion
Subject: RE: Windows Integration and Longhorn

Reboot an AD and if any updates to the AD farm have
occurred during the reboot then the environment can't figure itself out
and gets messed up.

No, that's not the case. We're talking about restoring AD from an
earlier copy.

Think of it this way, you're a distribution company. You assign order
numbers to every order (duh). At the end of yesterday the last order
number was 21. You have a customer call at 9AM and you tell him his
order number is 22. Then a customer calls at 10AM and he gets order 23.
All is well. You shut down, IPL and a customer calls at 11AM and he gets
order 24. Great.

Now, you were describing this model... Customer calls at 9AM and gets
order 22. Customer at 10AM gets order 23. Then you restore the as400
from last night's backup and the customer calls at 11AM. What order id
does he get? Well, the "next one" as far as the restored as400 knows is
22, since the last one before the backup was 21. So you tell the
customer at 11AM his order id is 22. Well, now you have a problem. The
9AM customer got order 22 and the 11AM customer got order 22.

Restoring a machine is different from IPLing a machine.

-Walden