Re: Proposed NTP solution for a network

Jason <bmwjason@xxxxxxxxx> writes:

Terje Mathisen wrote:
David J Taylor wrote:
Jason wrote:
[]
G. What have I missed, or gotten confused?
[]
Thanks,

Jason.

You forgot to say what the going rate is for the consultancy you want!

<G>

Indeed. My standard rate is $200+ per hour.

First of all: The 10s of us requirement within a site is _not_ feasible
without direct PPS sync on every server, and since your blades cannot do
this, the only alternative would be some other form of HW sync (like
having blades that can slave their master clock to the host enclosure,
and then using PPS to lock that master frequency).
This is what I was afraid of. When queiried, the manufacturer responded
with, well, nothing. Like they'd never heard of such a thing.


OTOH 100-1000 us is in fact quite doable using standard NTP.
The critical time-stamp of the transactions must be tighter than 100us.

Sorry, you simply cannot do it. the computers themselves have all sorts of
internal processes which could delay things by 100us. Are you sure you are
not confusing millisecods with microsecods (usec) a microsecond is
1/1000000 of a second. EVen if you slave
each computer to a GPS clock the internal workings can mess up the time by
100usec.

Who is setting this standard?




I would as a bare minimum configure two S2 servers at each site, both of
them as clients of all 3 GPS-based appliances, as well as 2-3
internet-based sources (either pool.ntp or a private peering agreement
with another nearby GPS-based company).
Good info, I'll start looking for both trusted (probably authenicated)
and accurate private sources -- some of our interconnected customers
also have sources.


Finally I would use the same NTP configuration on every single of the
remaining servers, syncing to all 6 of the secondary servers.
Without a doubt -- I'm pushing the sys admins to reconcile every server
NTP config.


Terje

Thank you.

Jason.

.

Relevant Pages

  • Re: Google momentarily misuse corrected
    ... Graeme Thomas wrote: ... Most servers don't (unless for political reasons they have to run ... Video was just an example. ... Their setup then consisted primarily of standard PC ...
    (alt.usage.english)
  • Re: whats the difference in files (and sizes) between project std
    ... >> Hi Sudheer, ... >> using servers, then the Standard version is of little use to you. ... >>>> add-ons that allow use with servers etc., ...
    (microsoft.public.project)
  • Re: A user that only has access to shared network folders
    ... Domain users are denied 'local logon' privilidges on the servers, ... if the user is a standard and you are using NTFS ... then enforcing a Mandatory Profile on the user would achieve that. ...
    (microsoft.public.windowsxp.network_web)
  • Re: SMS Heirachy
    ... I have also tried rebooting both servers after adding the compter accounts ... > try and setup a standard address when i select the drop down box i dont ... > account is a member of the sms_sitetosite group on SiteB? ... >> A. The address will use the sender, but having a sender is not enough. ...
    (microsoft.public.sms.setup)
  • Re: Vegas makes me sleepy!
    ... They gave me a casino rate...God ... I think the standard rate is $300 per night. ... Thomas W. wrote: ...
    (alt.vacation.las-vegas)
Loading