Microsoft Certificate Services Questions

[Guest admintgal]

We are thinking about bringing up a CA within our organization and I had a

few questions about Microsoft's CA services....

 

I noticed you can configure standalone or enterprise CA's. What are the

advantages of integrating your CA in to AD?

 

When using MS CA services what happens if the CA server goes down? Is there

some link between the certs and the server in which they don't work if that

server is down or is it just that certs cannot be created, requested or

issued?

 

Thanks in advance.