File Transfer during Business Best Practice

Hello EE,
I had an end user ask me what/when it is best to copy large files across the WAN?
It got me thinking that there isn't really a policy nor that it's needed.  Maybe just not first thing in the morning when people are coming in?  What advice can you share you'd recommend to save on your bandwidth?
operationsITAsked:
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ste5anSenior DeveloperCommented:
Ask your IT department and the also ask the recipients. Large files may or may not saturate (small bandwidth, Quality-of-Service) your WAN connection and/or the WAN connection of the recipient.
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operationsITAuthor Commented:
Yes bandwidth is small and there is COS, but are there best practices around file transfer i.e. kick off before going home, don't do it over lunch when everyone is surfing?
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bbaoIT ConsultantCommented:
technically, it depends.

say if it is a critical business for the end user to copy large files across the WAN then performance and stability are both at the first priority, hence people's experience in accessing the internet can be compromised and the network devices may need to be upgraded for better bandwidth.

practically, it is commonly at a lower priority for copying large files across the WAN, e.g. folder sync for office archived documents and backup files to external storage, therefore some of the following rules need to be developed in order to keep critical applications as well as user experience in an expected and even optimal condition.

* define peak and non-peak schedule.
* enable QoS or bandwidth limit for file transferring on given device ports, MAC or IP addresses, and protocols.
* split files to copy into sections, and copy each section simultaneously.
* resume interrupted or paused transfer.
* force file compression before being transferred.
* create a dedicated buffering folder or copying queue for file transfer.

hope it helps,
bbao
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_TAD_Commented:
"Best Practices" depends on your business; more specifically IT.

For example -- The organization I used to work for was global and we had to work around peek hours
      Europe worked from 3 AM - 11 AM
      US worked from 7 AM - 7 PM
      Asia worked from 8:30 PM to 4:30 AM

I, as a member of IT, would tell everyone to perform large data transfers at different times based where they were located.
   Europe - Lunch hour
   US - At the end of the day
   Asia - during the first half of their day  (global nightly backups of databases started at 1 AM CST)


In summary, have IT perform a bandwidth analysis and look at the lowest usage times for your business.   Maybe it's at 8 AM, maybe over the lunch hour, or maybe it's at the end of the day.
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ste5anSenior DeveloperCommented:
When you have QoS, then you can start it when ever you want. Cause QoS should be the technical implementation of your mentioned "policy".
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Oliver KaiserSystems EngineerCommented:
Depending on your network and business model there are quite a few answers to this.

First of all... There are no best practices for when to do filetransfer. Based on your business model and requirements employees may need to upload files all the time or not be allowed at all.

You have to take into account if the transfer may create an issue with other users. Considering your Internet Uplink you might want to deploy QoS to throttle the bandwith usage so users do not have to follow any organizational policies to not stress the network.

If you do not have QoS deployed you may want to advice your employees to only do large filetransfers outside core hours to not interfere with business goals.
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operationsITAuthor Commented:
Great input
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