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Slow Transfer Speeds  -  KB Article #1199

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In most FTP software, transfer speeds are recorded in kilobytes (KB) per second. Most internet connections are measured in kilobits (Kb) per second. One kilobyte equals 8 kilobits. For example, if an ISP has specified a 15000 Kb/s connection, the maximum transfer rate on that connection will not exceed 187 KB/s.

It is very common for an ISP to provide different upload and download rates for a connection. A typical home DSL package may have 1500 kilobits download and only 256 kilobits upload. This causes a fairly significant difference in upload and download speeds.

Bandwidth can also be used by other applications. A network running a web server, mail server and FTP Server will need to divide the total internet bandwidth between all these services. One example of this: if a web browser is opened while there are transfers in progress, web browsing and the file transfer will both be slower then normal.

Some articles discussing bandwidth optimization have been gathered and are located here: Bandwidth Optimization Articles