Optimal Latency and bandwith requirement

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Hi

We are trying to set up a Windows 2003 Terminal server at an off-shore
location. The clients will access the server using a VPN over the internet.
The server will be used for running and debugging applications using Power
builder.

Pilots have shown that with a 275-300 ms latency over the internet, the
performance at the client end is unacceptably slow.

We are now considering alternative options for the connectivity between the
client and the server to improve performance.

What is the maximum latency between the client and server that will allow me
to get acceptable performance for the kind of applications (business
applications, Power builder, 1-2 other non-graphic intensive applications) I
want to run?

The bandwith requirement for 1 client connecting to the server is in the
range of 45-90 kb. How do I determine the size of the pipe required to
support 1/2/4/10 users?

General question - how does one go about determining the latency and
bandwith requirements between the server and the client. Are there some
rule-of-thumbs / white-papers available?

Vikram

.



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