Samba 4 server role, time sync, upgrade from alpha5 to alpha 7

[Muhammad Fakhrul Rozi Bin Mohd Seth]

Hi Andrew,

Sorry bothering you;
I'm still have the super silly question here.. hehe :-P ;

1) NTP for Samba 4
    -how to i want the Samba 4 to synchronize the time with the client?
    -i know since alpha 5 the problem on time synchronization is an 
issue; but is it have any ways to avoid from user always get prompt 
server clock is not sync
    -i have seen that Samba 3 option have the ability to offer the time 
smb; is it integrated in Samba 4?
    -or somebody already have the solution for this issues?

2) Multiple Domain Controller (PDC/BDC)
    -i have post before regarding this one; but i'm not manage to install
        -does somebody have the "how to"? or simple step to be follow?
    -at lease i can have 2 server which can sync the data

3) Upgrade Samba4 Alpha5 to Alpha7
    -is it have a way to upgrade alpha 5 to alpha 7?
        -i already deploy the alpha5 to few hundred PC (around 300 
computer) with 350 users
    -is it have a way to export / import data from the alpha 5 to alpha 7?
    -i'm thinking of start from scratch back but the user i need to 
redeploy again...

Anyway Samba 4 team;
Thanks for the great solution


Regards
Rozi