TITLE
    QuickTime Streaming Server: Determining Adequate Server Bandwidth
Article ID:
Created:
Modified:
24937
6/23/99
3/10/00

TOPIC

    What connection size (bandwidth) do I need for my QuickTime Streaming Server configuration?


DISCUSSION

    If all of the expected connections for your QuickTime Streaming Server are the same size, then computing your needed bandwidth is relatively simple. Multiply the maximum number of users you expect to support by the bit rate of the files they will view. Here are two examples:

    Thirty clients viewing 1.5 megabits per second (Mbps) files would take up a 45Mbps connection which could be carried on 100Mbps Ethernet LAN.

    One thousand clients viewing 22 kilobits per second files (Kbps) would take up a 22Mbps connection which could be carried on 100Mbps Ethernet LAN or externally on a fractional T3.

    If the bit rates differ between the files (for example, you serve both over the Internet with 22Kbps files and on a LAN with 1.5Mbps files) your connection is more difficult to compute. You may use the formula above but keep in mind that there is no check on the client's bandwidth use. If you allow five hundred users, there is no method to require four hundred of them to connect to the smaller files. The total bandwidth of the server can be set so that as soon as that bandwidth is reached, new users will be turned away until current users disconnect from the server.

    Consider that the server may take the entire bandwidth up to the maximum set in the Admin. Also, consider that other network traffic is not part of this calculation; if there are other services on the network, take care to plan for a network and QuickTime Streaming Server configuration that will allow all the expected traffic.

Document Information
Product Area: Mac OS System Software
Category: Mac OS X Server
Sub Category: QuickTime Streaming

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