LapLink MN-LGD011-XX-US Speeding file transfers with SpeedSync and compression, Using SpeedSync

Speeding file transfers with SpeedSync and compression

When you are updating files, SpeedSync can shorten transfer times by sending only the parts of the files that have changed since the last update. SpeedSync is most effective when you update files that have not been changed extensively since the last update. Compression, on the other hand, speeds file transfers by “shrinking” files before they are sent and restoring them to their original sizes afterward. Compression is most effective with large files that have not been compressed already. Though both features are in effect by default, there may be circumstances in which you might improve transfer times by disabling them.

With SpeedSync

Source and target files are compared to locate changes in the source file.

Only the changes are copied, usually resulting in faster transfers.

Without SpeedSync

Source and target files are not com- pared for changes.

Entire files are copied, often resulting in longer transfer times.

Using SpeedSync

SpeedSync is designed to cut transfer times when you are updating files. It has no effect when you are copying files that were not on the target before you started copying.

Before a file is copied, SpeedSync searches the target for a file with the same name. If none is found, the entire file is

copied. Otherwise, the two files are compared to locate changes in the source file. Only the changes located in the source file are copied.

The time necessary to locate changes is usually more than offset by the smaller amount of data that has to be trans- ferred. The reverse may be true in a few circumstances,

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