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19990104: conduit questions

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: 19990104: conduit questions
  • Date: Tue, 05 Jan 1999 10:35:53 -0700
Joan,

I can set up one of our servers here to feed the data to you 
so that you can test things out and see if the data is of
interest to your group.

Generally I would expect top level sites to be able to relay the
complete data set to about 4 other sites. Since we are just starting 
out, we don't have that many sites in place yet. 

The data travels from NCEP to Goddard via T-1, which appears to be the
limiting factor thus far as far as network bandwidth. The sites
downstream of GSFC thus far are vBNS sites, which appear to have
sufficient capacity to fan the data out. The T-1 link is roughly
limited to about 500 MB an hour, which is pushed to the limit with 
the AVN data set. 

Steve Chiswell
Unidata User Support




>From: Joan Brundage <address@hidden>
>Organization: .
>Keywords: 199901042328.QAA22896

>Dear support,
>
>  I've sent some mail directly to Linda and Steve before, but since
>you've put the announcement out wider I'll address my questions to
>support from now on.
>
>
>  As I stated before, FSL is very interested in being a top tier site
>for receiving the CONDUIT data directly from NASA/Goddard.  We are
>currently in the process of analyzing how this would effect our 
>current servers and our internet connection.  Our servers can be
>upgraded to get where we need to be, but our internet connection may
>be more of a problem.  We are hoping to get a bigger pipe, but the
>timing is in question.  Some questions related to this:
>
>- If we are a top tier, do you have any idea as to how many downstream sites 
>we may be expected to feed?
>
>- As a top tier site, I would expect that we would have to get the entire
>feed. Correct?
>
>- Since you've announced this, is this service ready to hook up to?  
>
>- Can we run a test to get a better feel for the load for our bandwidth 
>analysis?
>
>
>One suggestion is if other entities in the new Skaggs building (NGDC, 
>NWS Denver, other ERL labs) would like to get CONDUIT data, we could
>easily feed them, since then the internet bandwidth won't be the issue.
>The network within the building has higher capacity.
>
>Any insight you could provide would be appreciated.
>
>Thanks,
>
>Joan Brundage
>address@hidden
>