OT: Bandwidth allocation for email

[Dave Bour]

Don't know if this helps.  My one client has ~ 80 users, some
internationally travelling (so frequent usage after standard business
hours).  They run usually just over 2000 messages a day too. Their
demographics based off last weeks report (not untypical of the norm)
are:

12:00 AM - 1:00 AM 66.4       
1:00 AM - 2:00 AM 47.1       
2:00 AM - 3:00 AM 177.1       
3:00 AM - 4:00 AM  100.3       
4:00 AM - 5:00 AM 47.2       
5:00 AM - 6:00 AM 44.1       
6:00 AM - 7:00 AM 85.4       
7:00 AM - 8:00 AM 52.4       
8:00 AM - 9:00 AM 83.8       
9:00 AM - 10:00 AM 125.6       
10:00 AM - 11:00 AM 147.5       
11:00 AM - 12:00 PM 134.0       
12:00 PM - 1:00 PM 93.7       
1:00 PM - 2:00 PM 154.1       
2:00 PM - 3:00 PM 154.6       
3:00 PM - 4:00 PM 185.4       
4:00 PM - 5:00 PM 94.9       
5:00 PM - 6:00 PM 42.0       
6:00 PM - 7:00 PM 53.5       
7:00 PM - 8:00 PM  33.1       
8:00 PM - 9:00 PM 47.4       
9:00 PM - 10:00 PM 58.3       
10:00 PM - 11:00 PM 53.4       
11:00 PM - 12:00 AM 41.9       
                     2123.4 


In our case, average loading has 2-3% typically non-business hours per
hour.  Office hours here are 9 to 5.  Mid morning and mid afternoon peak
at not quite 10% of daily volume.

Their user average is 28 MB of messages a day which I suspect is
significantly higher than typical since they sent a lot of pictures,
drawings and specifications being an engineering company.  I don't know
how much of this is internal vs external on a size basis however, their
ratio of external to internal is 40:1.  Lastly, a quick check off my own
servers shows 2.2MB per user (small consulting company) daily, less than
10% of the engineering boys.

Hope this helps.
D
 




Dave Bour
Desktop Solution Center
905.381.0077
dcbour-Uj1Tbf34OBsy5HIR1wJiBuOEVfOsBSGQ at public.gmane.org
http://www.desktopsolutioncenter.ca
 
Giving you complete IT piece of mind

-----Original Message-----
From: owner-tlug-lxSQFCZeNF4 at public.gmane.org [mailto:owner-tlug-lxSQFCZeNF4 at public.gmane.org] On Behalf Of JM
Sent: Tuesday, May 16, 2006 4:33 AM
To: tlug-lxSQFCZeNF4 at public.gmane.org
Subject: [TLUG]: OT: Bandwidth allocation for email

Hi ALL,

	Does anyone of you knows to estimate bandwidth utilization for
an email server effectively?

given:
	2000 incoming total mails for 130 users.
	
thanks,
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