For HyperScale Storage Pool, if the amount of free space falls below 50% of the library space, then a Level 3 space reclamation job to reclaim the idle space is automatically triggered by the system to run once in 7 days.
For more information, see Space Reclamation - Online Help.
Note
The Warning Watermark (%) that is set for the library in the Library Properties (Space Management) dialog box is ignored for HyperScale Storage Pool.