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Network Speeds

Posted on 2009-04-02
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I currently run a couple servers that host database driven websites. Our office is in the middle of a major conversion to move servers to a single central location on virtual servers. However they do not want to co-locate servers and we dont want to put our database server on a virtual server.

My questions is:

I curently have a 20MB external connection with a 100MB link from my router to my GB switch. My 2 servers (web and database) are connected to the swich via GB links. So right now when someone requests a page they come in through the 20MB link hit the web server which pulls data from the DB over the GB link then the info is sent back out over the 20MB link.

With this change we will be moving our web server to the virtualization center and thus routing all traffic between our web server and database over the 20MB connection. Will this slow down my websites and apps?
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Question by:irishpaul
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Justin_W_Chandler earned 2000 total points
ID: 24050639
Depending on the size of the database, you may experience a slight performance degradation. Generally speaking, however, it should be only mildly noticable, if at all.
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by:Justin_W_Chandler
ID: 24050693
I would add, however, that if you're polling the database and then only populating the data into tables presented to the requester, you will definitely see some change. It all comes down to the size of the database you're working with, and how much of the 20MB (meant as 20Mbps?) pipeline is saturated prior to the move. Prior to the move, it might be a good idea to measure the stream of traffic between the server and the database -- to see how much of the 20MB pipeline will be filled already. At the very least, you could make the move but keep a rollback plan in your arsenal should you determine it to have been a bad move.

Justin Chandler
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