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User’s Manual
29
Circular Function
The <Circular> function is used to adjust the HDD space usage of VSS.
Select <ON> to enable circular function and choose type to be <By Size> or
<By Percentage>. Then specify the value of threshold. Note that the threshold
value cannot be less than 2GB by size or 2% by percentage.
For example, when the threshold is set to 2GB, and there are 20GB free disk
space remaining in the HDD, VSS can only access the HDD no more than
18GB. When the free disk size is smaller than threshold:
1. If the circulation of files is performed at first time, VSS will start to
overwrite the earliest recoded data. Next time when VSS starts up, the
circulation of files will continue from where it was up to.
2. If the destination folders are reset, new folders will be created to store
new files. The old files will be deleted and rewritten with new files.
NOTE:
If Device Wizard function is enabled, the Circular function will
automatically be enabled, and the type will be set as <By Size> with
<Threshold> as 2000MB. Please refer to section
Device Wizard
for
more details.