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  Asked: Apr 9 2008   11:48 AM GMT
  Asked by: Grago

How much Internet Bandwidth


Internet, Bandwidth, Network design

hi! im just new to these. I just want to know if how much internet bandwidth connection do i need if i have 100 email users and 20 users uploading 75 files per day with file size vary from 500kb to 7 Mb. Thanks!

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Last Answered: Apr 10 2008  2:18 PM GMT  by Donnellymp


Latest Contributors: Labnuke99


The answer is: it depends.

Are these users doing it over an 8 hour workday or do they upload this information in a one-hour period?
What are you willing to pay for internet access?
Where are the files being uploaded to? US, Europe, Asia? - more bandwidth does not necessarily help if the destination host is a long ways away
Are you doing any VPN on this traffic? VPN encryption will reduce performance due to the encryption overhead. It may not be real noticeable but it is there.

These file sizes and the number of users does not seem to be large. I would think that you could get by with a T1 (1.5 Mbps) or similar. A T1 will give you symmetric upload/download speeds. A DSL link is typically limited in the upload direction. You can get symmetric DSL (SDSL) but it may be an additional charge.
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BRennels  |   Apr 9 2008  2:14PM GMT

Labnuke99 is correct that it does depend. However, I do agree that a T1 should be sufficient to accomodate your 20 users. I have done about a hundred bandwidth analysis for Exchange disaster recovery installations, replicating entire Exchange databases from a production location to a DR faciltity sometimes thousands of miles away and based on your description this should be fine and probably the minimum I would start with. If you find performance begins to slow you can always bump up to a 3mbit . Good luck.

 

Donnellymp  |   Apr 10 2008  2:18PM GMT

Another thing to consider, maybe down the road, is WAN optimization, which increases WAN speeds without adding expensive bandwidth.