Why is it not recommended to install SQl Server 2008 on a domain controller?

Why is  it not recommended to install SQl Server 2008 on a domain controller?  Please explain in it simplest form if possible.
kraven1388Field TechnicianAsked:
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Joshua GrantomSenior Systems AdministratorCommented:
SQL Server requires a lot of resources (CPU and RAM) If your SQL instances take up all of the server resources, no one will be able to authenticate to your domain, DHCP can stop working, DNS lookups will fail, etc...

Besides that, Domain Controllers contain hash tables of all the passwords for every user. No one should access this box unless they are trusted, When you have something like SQL on your DC, you may need application or database support from a third party and they can access things they shouldnt

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kraven1388Field TechnicianAuthor Commented:
Got it thanks for the explanation.
kraven1388Field TechnicianAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for kraven1388's comment #a40395169

for the following reason:

Explanation is on point.
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kraven1388Field TechnicianAuthor Commented:
Joshua GrantomSenior Systems AdministratorCommented:
Answer to question was not selected, author selected their own post to close
kraven1388Field TechnicianAuthor Commented:
Sorry about that.  I guess did not  click on the correct button.  Please give Joshua the credit he deserves.
Kyle AbrahamsSenior .Net DeveloperCommented:

There was a bug a while back where the comments were being accepted like you had.  Can you try to close it out accepting Josh's answer?
kraven1388Field TechnicianAuthor Commented:
Can you give me step by step instructions on how to do that?

Anthony PerkinsCommented:
It is all covered in the Help:
How do I accept a comment as my solution?
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