Re: 20000405: IDD data delivery rates

On Wed, 5 Apr 2000, Unidata Support wrote:

> 
> ------- Forwarded Message
> 
> >From: Dave Dempsey <address@hidden>
> >Subject: IDD data delivery rates
> >Organization: SFSU
> >Keywords: 200004052023.OAA03513 IDD feed rates
> 
> I have a meeting in 45 minutes with our top university network
> administrator at SFSU. I want to impress upon him the desireability of
> connecting to the Abilene network. It would be nice to have an
> reasonably accurate number representing the rates at which the IDD is
> delivering data through institutions such as mine these days. I've
> consulted the various data feed rate charts accessible through
> Unidata's WWWeb site.
> 
> The "Feed product bytes" chart for "IDD totals for all sites sending in
> statistics": does that represent the total amount of data being
> transferred by everyone to everywhere (as opposed to the total amount
> of data flowing into one institution from upstream)? The current chart
> is hard to read, but it looks like there are about 100-200 GB/day of
> data flowing somewhere in the IDD.
> 
> The chart showing "product feed bytes for DDS IDS HRS ..." under "IDD
> daily feed charts": the plot of late is off the chart, but it looks
> something like 800 MB/day associated with these feeds, vs. 4-6 GB/day
> for the WSI doppler data feeds. This seems a little out of whack--do I
> have one of them wrong?
> 


Dave,

The IDD feed total can range from 45M to 115M per hour. The average rate
is about 65M that increases as the large models arrive. So I would say
about 1.8G in a day for the IDD.  The WSI radar rate is 3-6M per hour for
about 160 sites.  The average rate is 4M because most sites are not in
high scan mode. This is about 640M per hour or 15.4G per day.  I don't
know how many radar sites that you receive, but in Oct you will be able to
receive all 160 at no cost so I would count on using all of them.

I was checking on a email problem, so hopefully this message will get to
you in time.

Robb...




> -- Dave
>                          
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> ------- End of Forwarded Message
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===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================