How to calculate data transfer in and out from a server

[System Dude_1]

Dear friends,

I would like to move 5 servers from server room1 which is my main data center to server room2 which is my remote datacenter. But I could only manage to provide 10mbs links for the five servers. Please guide me on how or the formula to calculate the network usage for individual server for me to accomodate the 10mbs link.

[Volker Borowski]

Hi,

you are not completely clear about the connection:

Has each machine an own 10MBit Link to data-center 1 or is there one 10Mbit Link for those five machines or is there one 10Mbit Link for all traffic between both centers ?

Calculation:
Taking a Byte as 10 Bits for simplification and protocol overhead, you can estimate a 10Mbit Link to transfer 1MB per second leading to roundabout 3,5GB per hour (not including any compression and providing diskaccess being faster than this !).

Would be good to know, what you need to do on this link.

Volker

[Paul R. Dittrich]

Don't forget that Ethernet "saturates" at ~60% of maximum. You won't ever get 10Mbps of throughput.

[MANOJ SRIVASTAVA]

Hi

You can use netstat -i 5 to find the netwrok traffic on each server . Crude way to start , but then since they are in single room it will be beeter in case you look to change the netwrok to 100mbps atleast which will involve not much expenditure but lot os relief.

Manoj Srivastava

[rick jones]

um, that business about ethernets being saturated at 60% utiliation is bunk. it is quite possible to run ethernets at 90% utilization.

most "ethernets" these days don't even run CSMA/CD which has often been used (incorrectly) as the reason that etheret cannot go to high utilizations.