Estimated Compression Ratio Does Not Match Drive Properties
This article was previously published under Q132990 SYMPTOMS
The estimated compression ratio on the Compression tab in Drive properties
remains at 1.0:1 despite changes to the estimated compression ratio in
DriveSpace 3.
If you try to change the estimated ratio for the drive, you receive the following error message:
Due to your current system configuration, your changes will have no
effect on the amount of free disk space that Windows reports.
DriveSpace is currently configured for optimum speed. With this configuration, DriveSpace does not use compression when saving changes to your files. Because of this, Windows uses a 1:1 estimated compression ratio to calculate free space, regardless of the setting in the compression ratio dialog box. Do you want to change the ratio anyway? CAUSE
Compression Agent has been set to maximize performance. This is reflected
in the following two Compression Methods settings:
RESOLUTION
If you want to compress files, change the Compression Methods settings to
the HiPack values. For maximum performance, however, leave the settings as
they are.
MORE INFORMATION
When the maximum performance settings are used, all files are uncompressed
to a 1.0:1 ratio after Compression Agent is run. This prevents the
estimated compression ratio from changing in the drive's properties.
When DriveSpace is set to High Performance in the performance tuning dialog, DriveSpace turns off on-line compression. To have the changes made to the ECR take effect, you must enable on-line compression.
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