Solved

reduce number of Domain Controllers

Posted on 2009-07-13
6
367 Views
Last Modified: 2012-06-27
I have a network I've inherited in a secondary school.
We have a fibre-optic backbone with gigbit switches linking together all the classrooms  / buildings on site.
We have four Domain Controllers
1 x Exchange Server
1 x SQL Server
1 x Backup server
1 x NAS box
There are 1000 students, 70 teachers, 30 support staff.
400 client computers running XP Pro
We are on a support contract for the Windows Servers (as well as hardware warranty). Each Domain controller adds £750 to the support cost.

In 12 months time I plan to ditch the support contract altogether, but in the meantime I think I can reduce the DCs to two, thus simplifying things AND saving the school £1500 pa.

My question is this:
In what way might I need to improve the spec of the remaining DCs to cope with the demand?
Do I need to think about processor speed? RAM? Network connections?
The servers have two Xeon 3Ghz (single core processors); 2 Gb RAM; 1 x fibre and 1 x Gbit network connections

Services across the 4 DCs are:
DHCP
DNS
AD
Print Serving (40 printers)
User accounts (roaming profiles)

I don't have the budget for hardware replacement (new Servers) this year.
0
Comment
Question by:ComputerFundi
6 Comments
 
LVL 6

Accepted Solution

by:
akrdm earned 125 total points
ID: 24840289
You would need to look at upgrading the memory on the Servers if you are going to start running multiple applications on one box.  Your network cards/connections seem to be fast enough and the processors should probably be ok.  I would focus on upgrading the Ram in the systems.  These are my suggetions.
0
 
LVL 10

Assisted Solution

by:Alan_White
Alan_White earned 125 total points
ID: 24840291
Can't you just take these two off maintence.  If they go bang in the mean time, so what.
I would question having DC as Print Servers.
When you say they are doing roaming profiles, are the profiles actually roaming to and from the DCs?  If so, I'd question this too and suggest you move these to your NAS.
Have you looked into virtualisation yet?  DCs work quite nicely under VMware.
0
 
LVL 42

Assisted Solution

by:paulsolov
paulsolov earned 125 total points
ID: 24843823
I agree with Alan, you can virtualize some DCs and print servers so that you do not have to have as many physical servers and you can justify the cost of virtualization with the reduction in electric bills which should be easy to calculate
0
 
LVL 10

Assisted Solution

by:JonLambert
JonLambert earned 125 total points
ID: 24845178
With the Specs you already have, what the servers are actually performing, and 400 clients, personally I think that you would NOT have an issue with dropping down to two DCs at all, though the preferable option would be to move the File and Print services off to another box.  If you are unsure, user PerfMon to do some performance monitoring of the existing servers to see what sort of load they are under (I expect you will be supprised about how little they are utilised)

Monitor % Proccessor Time, Network (NBT Connection) and Physical Disk queue.  And I think you will find that the existng servers are actually doing very little.
0

Featured Post

IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

A quick step-by-step overview of installing and configuring Carbonite Server Backup.
ADCs have gained traction within the last decade, largely due to increased demand for legacy load balancing appliances to handle more advanced application delivery requirements and improve application performance.
This video discusses moving either the default database or any database to a new volume.
Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…

757 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now