Y
YHussein
Guest
Hi all,
I'm in the proces of migrating our existing servers onto new hardware and
was wondering what the best strategy would be. I have a rough (high-level)
plan below and would be most grateful if someone could cast their eye over it
and let me know if its generally sound or if there any issues with it.
Ok, here goes...(apologies for the long post).
EXISTING SETUP:
--------------------------
I have two servers at the moment, both running Windows 2003 SP2. Their roles
are as follows:
1. DC1 (the main server which is running pretty much everything): DC, FSMO,
DNS, WINS, DHCP, File & Print, Exchange 2003 SP2.
2. DC2 (the backup server which also runs BES): DC, DNS, Blackberry
Enterprise Server 4.1.
THE CHALLENGE:
--------------------------
We would like to spread all the above services across 4 new servers and then
retire the above hardware. The new servers will be configured as follows:
1. NEWDC1: DC, FSMO, GC, DNS, WINS, DHCP
2. NEWDC2: DC, DNS, GC, WINS, BES4.1
3. NEWFS1: File and Print
4. NEWEX1: Exchange Server 2003 SP2
NOTE: All the new servers will be running R2 (our existing servers are non-R2)
THE PLAN OF ACTION:
----------------------------------
1. Run Adprep /Forestprep and Adprep /Domainprep on the existing DC1 (using
disk 2 of the WIndows 2003 R2 CD) in order to prepare AD for R2
2. Build NEWDC1, join to existing domain, DCPROMO it, make it a GC, install
DNS, WINS and DHCP (dont authorise DHCP yet)
3. Transfer all FSMO roles from existing DC1 to NEWDC1 (will this break
Exchange as it currently sits on DC1?!!!)
4. Build NEWDC2, join to existing domain, DCPROMO it, make it a GC, install
DNS and WINS.
5. Authorise DHCP on NEWDC1 and migrate DHCP database from DC1 to NEWDC1.
Update DHCP scope options with IPs of new DNS/WINS servers so that clients
obtain new settings.
6. Leave everything running for a few days and observe network to make sure
all clients and servers (especially Exchange) are running ok.
7. Build NEWFS1, recreat print queues, recreate shared drives and migrate
data files across from DC1. Modify client logon scripts so that mapped drives
point to NEWDC1.
8. Leave everything running for a few days again to make sure all clients
are accessing the new file and print server without issues.
9. Build NEWEX1 and install Exchange 2003 SP2 into existing organisation.
10. Move mailboxes and public folders from DC1 to NEWEX1 (using Exchane
System Manager).
11. Wait a few days more to ensure that all Outlook clients successfully
redirect to NEWEX1. Check Blackberry Enterprise Server to ensure Blackberries
still work.
12. Set NEWEX1 as primary server for email and move remaining Exchange roles
over from DC1 to NEWEX1 (follow MS Kb article 822931)
13. Install Blackberry Enterprise Server 4.1 on NEWDC2 and perform
knife-edge cutover of Blackberries (separate topic!)
14. Observe the network for a few more days. If everything is running fine
then begin the cleanup process below.
CLEANUP PROCESS
--------------------------------
1. Remove DNS from DC2, demote it to a member server, then finally remove it
from the domain permanently.
2. Remove Exchange from DC1, followed by DNS and then finally demote it and
remove from the domain also.
That should conclude the whole project
Pease let me know if this plan is
generally ok or if there is anything missing or a better way of doing it.
FEW FINAL QUESTIONS
---------------------------
1. Will moving FSMO roles from DC1 to NEWDC1 (as per step 3 above) break
Exchange? (as Exchange is currently on DC1)
2. Will having four DCs (all with GC and DNS services) during the migration
cause any detrimental network issues? (e.g. increased replication traffic
etc) as I know Microsoft do not recommend having too many DCs on the network
- even though in our case it will only be temporary.
Many thanks in advance for your assistance.
Yasser Hussein
I'm in the proces of migrating our existing servers onto new hardware and
was wondering what the best strategy would be. I have a rough (high-level)
plan below and would be most grateful if someone could cast their eye over it
and let me know if its generally sound or if there any issues with it.
Ok, here goes...(apologies for the long post).
EXISTING SETUP:
--------------------------
I have two servers at the moment, both running Windows 2003 SP2. Their roles
are as follows:
1. DC1 (the main server which is running pretty much everything): DC, FSMO,
DNS, WINS, DHCP, File & Print, Exchange 2003 SP2.
2. DC2 (the backup server which also runs BES): DC, DNS, Blackberry
Enterprise Server 4.1.
THE CHALLENGE:
--------------------------
We would like to spread all the above services across 4 new servers and then
retire the above hardware. The new servers will be configured as follows:
1. NEWDC1: DC, FSMO, GC, DNS, WINS, DHCP
2. NEWDC2: DC, DNS, GC, WINS, BES4.1
3. NEWFS1: File and Print
4. NEWEX1: Exchange Server 2003 SP2
NOTE: All the new servers will be running R2 (our existing servers are non-R2)
THE PLAN OF ACTION:
----------------------------------
1. Run Adprep /Forestprep and Adprep /Domainprep on the existing DC1 (using
disk 2 of the WIndows 2003 R2 CD) in order to prepare AD for R2
2. Build NEWDC1, join to existing domain, DCPROMO it, make it a GC, install
DNS, WINS and DHCP (dont authorise DHCP yet)
3. Transfer all FSMO roles from existing DC1 to NEWDC1 (will this break
Exchange as it currently sits on DC1?!!!)
4. Build NEWDC2, join to existing domain, DCPROMO it, make it a GC, install
DNS and WINS.
5. Authorise DHCP on NEWDC1 and migrate DHCP database from DC1 to NEWDC1.
Update DHCP scope options with IPs of new DNS/WINS servers so that clients
obtain new settings.
6. Leave everything running for a few days and observe network to make sure
all clients and servers (especially Exchange) are running ok.
7. Build NEWFS1, recreat print queues, recreate shared drives and migrate
data files across from DC1. Modify client logon scripts so that mapped drives
point to NEWDC1.
8. Leave everything running for a few days again to make sure all clients
are accessing the new file and print server without issues.
9. Build NEWEX1 and install Exchange 2003 SP2 into existing organisation.
10. Move mailboxes and public folders from DC1 to NEWEX1 (using Exchane
System Manager).
11. Wait a few days more to ensure that all Outlook clients successfully
redirect to NEWEX1. Check Blackberry Enterprise Server to ensure Blackberries
still work.
12. Set NEWEX1 as primary server for email and move remaining Exchange roles
over from DC1 to NEWEX1 (follow MS Kb article 822931)
13. Install Blackberry Enterprise Server 4.1 on NEWDC2 and perform
knife-edge cutover of Blackberries (separate topic!)
14. Observe the network for a few more days. If everything is running fine
then begin the cleanup process below.
CLEANUP PROCESS
--------------------------------
1. Remove DNS from DC2, demote it to a member server, then finally remove it
from the domain permanently.
2. Remove Exchange from DC1, followed by DNS and then finally demote it and
remove from the domain also.
That should conclude the whole project
Pease let me know if this plan is generally ok or if there is anything missing or a better way of doing it.
FEW FINAL QUESTIONS
---------------------------
1. Will moving FSMO roles from DC1 to NEWDC1 (as per step 3 above) break
Exchange? (as Exchange is currently on DC1)
2. Will having four DCs (all with GC and DNS services) during the migration
cause any detrimental network issues? (e.g. increased replication traffic
etc) as I know Microsoft do not recommend having too many DCs on the network
- even though in our case it will only be temporary.
Many thanks in advance for your assistance.
Yasser Hussein
