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Switching capacity and the movement of files across the network

Posted on 2006-06-28
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Last Modified: 2012-06-27
Hi Experts

Could you please let me know how the switching capacity of a switch affects the movement of large files across the network?
Is it right that the bigger switching capacity, the bigger file sizes can be moved across the network?
Is it right that the bigger forwarding rate, the faster the files can be moved across the network?
What do we need to consider when buying a switch to make sure the good movements of big files (sometimes up to 30MB) across the network?

Thank you very much.
Kind Regards
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Question by:trangnhluu04
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r_naren22atyahoo earned 250 total points
ID: 17006675
1.
File transfer rate will not depend on the size of the file.
It only depends on the Protocol you use.
Example the FTP or the normal Windows file transfer TCP/IP.
FTP is faster than the normal windows file transfer.

2. Switch through put
if you have 24 Ports of 100MBps then if the switch through is 4800 MBps
i.e 100*2(full Duplex) * 24(ports) i.e 4800 MBps.
means
all the 24 ports can be fully utilised the full speed i.e. 100MBps at one time., if you dont use all 24 Ports still the speed is 100MBps on each port.

3. Ethernet Cable.
CAT5 or CAT6 they can achieve about 450MBps to 650MBps. MAX.

regards
Naren
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by:r_naren22atyahoo
ID: 17106296
Grade C ?
:(
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by:r_naren22atyahoo
ID: 17106298
do you need any more info?
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Author Comment

by:trangnhluu04
ID: 17118688
HI Naren

Thank you very much for your thoughtful answer but sorry you are not happy with the grade. I wish I could be happier with the response. But temporarily I can't still find out the good answer to my question. According to your advice, file transfer rate will not depend on the size of the file. Our situation is somehow not quite like that.

Our architects, who are usually accessing big drawings from the share drive, have got more troubles than those who are dealing with smaller size drawings, which are also stored on share drive. Regardless of the machines the architects are using, big drawings always cause troubles. So we have to store the big drawings on the local C:drive, work on them and save the final version back to the share drive on the server. It's not very convenient, but as we have not found out the cause, we can't solve the problem. We have tried to swap the machines, we have tried to replace the network cables, etc...

Regards
TRang



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by:r_naren22atyahoo
ID: 17119288
I can still say that it will not depend upon the switch.
However using a better switch will increase the overall performance.

If you have a gigabit switch, use the gigabit NIC on the workstation.

Do you know about Roming Profile??
You can use this option for architects

This way the drawings are copied to the local harddisk and are synchronised with file server regularly
the drawing software will use the cached file on local harddisk.

The whole process is automated and the architects will be working on files from the local harddisk.
and these files are synchronised by windows

may be this will solve your problem

regards
naren
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Author Comment

by:trangnhluu04
ID: 17119443
Hi Naren

I know about Roaming Profiles but haven't tried it as it seems that roaming profile needs lots of bandwidth as well, another sacrifying for the system. I may try it asa I find out some spare time. Or I may negotiate with my manager to buy a better switch.

Thank you again for all advices.

Regards
TRang
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by:r_naren22atyahoo
ID: 17119462
If the user is working from LAN, then it saves the bandwidth.
as it Sync's only the files that are changed.
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