How much bandwidth is required if transmitting over 4 Terabytes

[aeroforce]

I have been searching and searching to try and find a quick answer to this question. I know and OC3 will handle the traffic but would it be smarter to upgrade to an couple OC3's. I also would like to see a calculation for this.

Thanks for any help.

[bing]

You missed one important thing in your question, for how long ? In a second, minute, hour, day, week ?

[aeroforce]

My bad. HAHA 4T a month.

[thideras]

From my rough calculations, just a little over 1.5 megabytes per second.

[aeroforce]

How did you calculate this? If you dont mind me asking.

[thideras]

4TB = 4,000,000MB

30 days = 720 hours = 43,200 minutes = 2,592,000 seconds

4,000,000MB / 2592000 seconds ≈ 1.543 mb/sec

[Joeteck]

An OC3 can do 155Mb /sec. or 19MB a sec.

4TB can be transferred on an OC3 in 3.5 minutes...

That's IF you can achieve 19MB / sec

[thideras]

An OC3 can do 155Mb /sec. or 19MB a sec.

4TB can be transferred on an OC3 in 3.5 minutes...

That's IF you can achieve 19MB / secI'm getting totally different answers.

4,000,000MB / x seconds = 19MB/sec

4,000,000 = 19x

4,000,000 /19 = 210,526 seconds

210,526 seconds = 3508 minutes = 58 hours

Might want to check your math, think you got a few decimals off. To transfer 4TB in 3.5 minutes, you would need to transfer at 19GB/sec.

[aeroforce]

Thanks so much. That really helped!!!

[Joeteck]

I'm getting totally different answers.

4,000,000MB / x seconds = 19MB/sec

4,000,000 = 19x

4,000,000 /19 = 210,526 seconds

210,526 seconds = 3508 minutes = 58 hours

Might want to check your math, think you got a few decimals off. To transfer 4TB in 3.5 minutes, you would need to transfer at 19GB/sec.


I think you might be right... Whoops...

58.48 hours to be exact ! or almost 2 and a half days...



Edit. I did not put 12 zero's after the 4....

[thideras]

I wish I could transfer that fast. I could fill my server in 6 minutes!

[petteyg359]

line speed = daily maximum
10Mb = 105GiB per day
100Mb = 1.1TiB per day
1Gb = 10.5TiB per day

864000b per 10Mb. (Network link speeds are measured in SI (decimal) powers, not binary, AFAIK). A 155Mb line could do 1.6TiB per day. Windows labels file sizes as SI (TB), but it is actually measuring in binary (TiB), so make sure you do your division with binary powers (1024).

[thideras]

Exactly why I said "rough" calculations. :)