Hmm, could be your VM host has the wrong time, and is jamming that bad time into its guests occasionally. Disable the host->guest time sync and, provided w32tm is set up properly, you may find everything is good.
Also it wouldn't hurt to make sure the host has a solid time configuration, as *fully* disabling host->guest sync, at least under VMWare, takes a little more poking than one might think. Definitely would sort this out before considering 3rd party NTP solutions... anything more than a couple seconds of skew isn't w32tm's fault. --Steve On Fri, Jan 4, 2013 at 12:11 PM, Richard McClary <[email protected]> wrote: > Thanks to all so far! > > The drift goes off into minutes apart. > > I presume somewhere in those TechNet articles is something (registry hack to > workstations via GPO) that can have servers and workstations sync with the DC > every 1-2 hours? (At first skimming, it's not all that clear.) > > Thanks again.... > > -----Original Message----- > From: Steve Kradel [mailto:[email protected]] > Sent: Friday, January 04, 2013 10:32 AM > To: NT System Admin Issues > Subject: Re: Time sync > > How much time skew are we talking about here? While MSFT will only support > w32tm accuracy within 1-2 seconds, in practice I have found it to be stable > within a tenth of a second or less, and would not feel compelled to look into > very-high-accuracy NTP clients for regular non-scientific applications. Do > you have separate systems recording the timestamps of an incoming call and > the creation of a linked medical record, or are things unreliable even on a > single host? > > --Steve > > On Fri, Jan 4, 2013 at 9:10 AM, Richard McClary <[email protected]> > wrote: >> Greetings! >> >> >> >> I'm sure I and many others have asked this (but are still stumped). >> Ken S's reply yesterday pointing to ultimately a chain of TechNet >> articles has shed some light and will start us digging. >> >> >> >> Microsoft admits W32Time is sloppy >> (http://support.microsoft.com/kb/939322) >> - mainly meant to make Kerberos v5 work. >> >> >> >> Our issue is, W32Time lets things drift enough for weird things to >> occur in our medical records. >> >> >> >> We have a veterinary toxicology consulting hotline. Because things >> get out of sync a bit, we frequently have medical records opening >> before a client's telephone call is received. >> >> >> >> The article referenced above essentially says to go find an >> alternative to W32Time. NIST has gathered a list of time sync >> software. QUESTION: has anyone on the list used (and would >> recommend) anything on that list to fix the "record created prior to the >> call" situation? >> (http://www.nist.gov/pml/div688/grp40/softwarelist.cfm) >> >> >> >> Thank you... >> >> -- >> >> richard >> >> >> >> >> >> The information contained in this e-mail, and any attachments hereto, >> is from The American Society for the Prevention of Cruelty to Animals(r) >> (ASPCA(r)) and is intended only for use by the addressee(s) named herein >> and may contain legally privileged and/or confidential information. 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