[time-nuts] OT: NTP server questions

[Robert Darlington]

Basically I need something to provide time within one second.  I can't roll
my own in this case.  At home I have a Soekris box with a custom built gps
board for my normal level of time-nuttery but this is not for home.  I'm
looking for commercially made rack mount servers that will not have Internet
access for reference and will need to rely on gps.   The system will need to
serve time to less than 100 systems but it will live in a nasty environment
in the back of a humvee (or something like an S-250 electronics enclosure)
with no air conditioning of any sort.  I'm currently looking at Symmetricom,
Trimble NetRS, EndRun, and Meinberg.

Also, I apologize if I'm breaching protocol with this thread.  This is just
about the first post I ever saw on this list that didn't get a steady stream
of replies.  I was actually questioning if this even made it into the list
till I saw this reply.  Yes this is for work and I could really use some
opinions on this stuff since dropping $4-6k isn't in my nature to do at home
for a network clock so I never gave this thought before.

Thanks again,
Bob


On Mon, Nov 29, 2010 at 11:39 PM, Chris Albertson <albertson.chris at gmail.com
> wrote:

> What do you need to do?  What precision is required and how many clients
> will
> you be serving.   For most "normal" uses you don't need a special purpose
> server system.  A $600 notebook PC and any GPS unit with a serial
> connection and a copy of Linux or BSD.
>
> On Mon, Nov 29, 2010 at 11:36 AM, Robert Darlington
> <rdarlington at gmail.com> wrote:
> > Hi guys,
> >
> > I'm looking to buy an NTP server for a field deployable server system.  I
> > currently have a Symmetricom SyncServer S250 which does more than I need.
>  I
> > am considering buying an S200 (same as the S250 but without the ability
> to
> > connect to an external frequency standard).  My gut feeling is I don't
> need
> > a rubidium oscillator or even an OCXO internally since we'd be going from
> a
> > power on to being used state in under an hour, outside of any kind of
> > temperature controlled environment.  Are there any manufacturers out
> there
> > besides Symmetricom that I should be looking at for something like this?
> > The unit we're considering buying is about $4k new and is inside of our
> > budget.
> >
> > Thanks,
> > Bob
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>
> --
> =====
> Chris Albertson
> Redondo Beach, California
>
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