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Re: bandwidth need for IDD

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  • Subject: Re: bandwidth need for IDD
  • Date: Fri, 15 Nov 2002 11:18:02 -0700 (MST)
Hi Alan, 

Obviously there are many variables that come into play..keep in mind that
the queue can offset some of the burstiness associated with the data i.e.
model output, and you can modify the size of your queue, so this gives
some leeway. The IDD propogates the NWSTG which is broadcast on a T1, so
that would be your upper limit. A T1 will deliver ~540 MB/Hour. In looking
at your latencies from rtstats, you seem to be humming along nicely
currently. What are you planning on adding to your request?


I do not know if this is enough info for you to base a decision on, please
let me know what/if any other specifics you may need.

Thank you,

-Jeff
____________________________                  _____________________
Jeff Weber                                    address@hidden
Unidata Support                               PH:303-497-8676 
COMET Case Study Library                      FX:303-497-8690
University Corp for Atmospheric Research      3300 Mitchell Ln
http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000
________________________________________      ______________________

On Thu, 14 Nov 2002, Anderson, Alan C.  wrote:

> 
> Hi Jeff
> 
> Our department has been asked about our needs for bandwidth relating 
> to our internet access.   I have looked at some info. on the Unidata Web 
> Site and by my estimates, if we are receive the selection of products we
> would like,  the total amounts to perhaps  10 GB  per day.   We are not 
> receiving all of this now, but hope to increase our ingestion in the near 
> future.
> 
> My question is,  do you have any idea what the peak rates are on a MB/sec
> basis ?   10 GB  per day  averages to 0.116 MB/sec,  but I am sure the 
> data does not flow uniformly.  
> Do you have any ideas on what capacity sites need in oder to not fall 
> behind in terms of data reception on the IDD ?
> 
> Thanks
> 
> Alan Anderson
>