# Monitoring Analysis (C)

+ Grafana`PD --> Statistics - balance - Store Available ratio`
  + Around 40% of the available disk space for multiple stores


![left](./student-guide/diagram/03-32-1.png)

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Grafana PD —> Statistics - Balance - Store Available Ratio shows the available space of each TiKV disk. In addition to hotspots, the most likely factors that affect region scheduling are the size of the region and the disk space. The free disk space of the store is about 40%, indicating that the used space is 60%, which exceeds the range specified by the 33-page high-space-ratio. When scheduling PD, the remaining free space metric is considered, and the calculation for each store changes, causing the score to rise, triggering PD scheduling.