gigabit switch and 10/100mbps switch problem

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jef___simple

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Oct 30, 2016
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i hope you could help me in my problem... I have 16 port 10/100mbps switch connected to 12 computers in my place, and one stand alone PC where i store my multimedia like movies and files... when my computers copies files/movies simultaneously transfer speeds drop up to 1.5mbps but if only 1 pc is transfering files i get up to 12.5mbps... if i do this file server connected to a 5 port gigabit switch and connected to my 16 ports 10/100mbps, will my 12 computers wont drop speeds anymore when transfering files
 
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You will get a error when you attempt to assign a second nic into the same subnet as the first unless you bridge them and if you bridge them you will get a broadcast loop because most consumer switches do not...
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AlejandroL

AlejandroL

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Oct 27, 2016
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Actually, find out what the max read/write speed of your file server is and then realize that if only one pc connects to it your speed should be around the max of the device. If more than one pcs connect to the file server then the speed gets divided by the number of connections, plus an overhead from handling multiple requests at the same time.
Just think about it, if you have a 10/100 switch max speed is 100, and 12x1.5=18 and the single PC is at 12.5, so your switch can handle more, your file server can not...
Also, reading speeds are usually faster than writing speeds FYI.
 
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ShadyHamster

ShadyHamster

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Jan 3, 2012
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Why not just get a 16 port gigabit switch?
If you connect the server to a gigabit switch then connect that to your 100megabit switch you will still be limited to that single 100megabit connection.
12 PCs read/writing at the same time over a single 100mbps connection each get 8.33mbps, so each PC has a max transfer speed of 1.04MB/s before overhead.
Only way around this is to add more network connections on the server side to the switch (assuming you know how to set this up to actually take advantage of multiple connections) or get a gigabit switch.
 
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J

jef___simple

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Oct 30, 2016
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is adding another nic will help?

 
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ShadyHamster

ShadyHamster

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Or you could manually set 6 PC's to connect to the server via 1 of the IP's and the other 6 to the other IP.
There's a few more steps involved but it works.
Mind you this will only double the effective transfer speeds from 1.04 to 2.08MB/s, you would still be better off buying a gigabit switch.
 
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bill001g

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Aug 9, 2012
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You will get a error when you attempt to assign a second nic into the same subnet as the first unless you bridge them and if you bridge them you will get a broadcast loop because most consumer switches do not support spanning tree.
 
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