How data stores in hard disk?

Hi all , I want to know how the scylla stores data in hard disk. Are data stored on different different pages / frames of the hard disk? Is data storation a contiguous allocation process or non contiguous allocation?

In ScyllaDB (and Cassandra), data is stored in Sorted String Tables (SSTables). You can learn more about SSTables and compaction in the [Compaction Strategies].(Compaction Strategies - ScyllaDB University) ScyllaDB Universty lesson.
You can read more about the Architecture of ScyllaDB and how it partitions data in the Architecture ScyllaDB University lesson.
Another useful resource is this page.