iPadOS storage refers to the space taken up by the operating system on an iPad. This includes the space taken up by the system itself, as well as non-removable mobile assets like Siri voices, fonts, dictionaries, non-removable logs and caches, Spotlight index, and system data such as Keychain and CloudKit Database. The amount of storage used by the operating system can vary based on the device and model, but it is typically around 6 GB permanently and about the same for variable data. To check the storage on an iPad, you can go to the Storage section of Settings, where your device might offer recommendations for optimizing your storage. If your device is low on storage, it can automatically free up space while installing an app, updating iOS or iPadOS, downloading music, recording videos, and more.