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February 24th, 2009, 01:24 PM
#1
determining time it takes data to travel across a specified transmissin line
? how long does it take two 30 gigabyte files to traveling across a Cat 5 cable twisted pair cable. Cat 5 = 100mbps calculate by minutes and seconds. EX: 1 min 10 sec
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February 25th, 2009, 10:49 AM
#2
Registered User
That is like asking how long does it take a Corvette to cross Manhattan... Can be 5 minutes or 2 hours depending on traffic.
Same with your scenario. It depends on how fast the data can be read from the source disk, how fast it can be written on the destination and the congestion of the network, the MTU settings, etc.
Ethernet has an efficiency of ~95% due to the TCP/IP overhead.
Assume no retransmissions and 1GB=1,073,741,824bytes.
The usable bandwidth of the channel is ~95000000bps, ~11,875,800bytes/sec
Therefore time=2*30*1,073,741,824/11,875,800 ~5425sec, so a bit over 1h30min - that is the ideal scenario and I can almost guarantee you it's not going to happen. Realistically 1:45-2:30h...
Protected by Glock. Don't mess with me!
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February 27th, 2009, 07:50 PM
#3
Registered User
I liked the question better that asked about a train leaving New York and a train leaving Los Angeles. I like trains. When I was a little boy I took a trip on a train and really enjoyed it and have never quite forgotten that trip.
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February 27th, 2009, 09:32 PM
#4
Registered User
Oddly, enough, one of the reasons my first wife divorced me was because she said I was untrainable. I guess she really liked trains a lot more than I thought she did.
Last edited by slgrieb; February 27th, 2009 at 09:46 PM.
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