Rebooting Domain controllers in the middle of the day

We've multiple DCs for multiple sites. Is it safe, good practise to reboot DCs in the middle of the day. Can it impact on users, Email, anyhing?

Thanks
kswan_expertAsked:
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BillBondoCommented:
It will impact users connected to them. Files, email, etc. Wait till after hours.
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Neil RussellTechnical Development LeadCommented:
it can impact on everything, depends on how your set up.

Are your DC's Also DHCP servers? Are you using split scope accross both servers on each site? If not what happens when you reboot the DC that has the DHCP role?

Lots of considerations like that. Best practice would be to reboot them when you need to.

Why would you want to reboot in the middle of the day anyway?
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AkhaterCommented:
is it safe ?
assuming it is only a domain controller and nothing more (DHCP, File Server, DNS with no secondary) then yes it is safe

if all your configuration is correct it shouldn't impact anythign else.

If i were you I would give it a try first during scheduled maintenance and see the behavior. any disconnection or service disruption can and should be fixed
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Jason WatkinsIT Project LeaderCommented:
I would wait until after hours before rebooting any DC. Even though multiple DCs may exist in one site, it can affect those connected to the rebooting server.
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IKtechCommented:
I would say the biggest things are dns and global catalog.  No dns means users will notice as no name resolution would happen unless you have another dns server.  Exchange won't work without a global catalog server.  Good practice to have two GCs.

what's wrong with creating a scheduled task to reboot and reboot after hours?
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