License block: Vezha features
What it shows
FS free, % in Vezha corresponds to the metric fs.free_pct. The value is normalized and allows you to compare the status of different disk configurations.
Why it matters
Percentage is convenient for single alerting thresholds for a large fleet of servers. So the team sees critical trends equally for small and large volumes.
An example from practice
On two servers with different volumes, the percentage of free space simultaneously fell below the working level. This immediately indicated a general pattern of data growth after the new release.