Agreed with Ben on naming multiple NTP sources, so you're not hosed if one of them goes wacky. I've had best results by configuring like so: 0.us.pool.ntp.org 1.us.pool.ntp.org 2.us.pool.ntp.org etc...
--Steve On Thu, Sep 22, 2011 at 12:05 PM, Ben Scott <[email protected]> wrote: > On Thu, Sep 22, 2011 at 11:05 AM, Tom Miller <[email protected]> wrote: >> I am reconfiguring my time providers for my AD servers. What are you using >> for your public time sources? > > I've got my PDC Emulator configured to get its time from our > in-house Linux server running the reference implementation of NTP. > That Linux box is configured to sync to multiple pool.ntp.org servers: > > server us.pool.ntp.org > server us.pool.ntp.org > server us.pool.ntp.org > server time.windows.com > > I list the same name three times because I'm running an older NTP > release which doesn't support the "pool" directive (which does the > same thing and better). > > I threw time.windows.com in there as a further diversity measure. > > By using multiple diverse time sources, NTP can better detect and > compensate for network latency and drift. Accuracies within a few > seconds of "atomic" time are achievable this way. > > Microsoft's documentation on the Windows time service isn't clear on > if/how it handles multiple upstream NTP servers, and given MSKB 939322 > I figured I wasn't likely to get an answer, and I already had NTP > configured on *nix, so that's the route I chose. > > -- Ben > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
