What type of storage is used for swapping storage files?

Swapping storage files typically utilize ephemeral storage. This type of storage is transient and designed to be fast and temporary, making it suitable for tasks that require quick read/write capabilities without the need for persistent storage. In cloud environments, ephemeral storage is commonly used for virtual machines and can be created and destroyed along with the instances themselves.

This characteristic aligns perfectly with the requirements of swapping because swapping involves moving data to and from physical memory and needs a storage solution that can handle high-speed transactions without the overhead of durability and persistence that long-term storage solutions provide. Long-term storage, raw storage, and object storage are meant for data retention and access over extended periods and would not be efficient for the transient nature of swapping operations. Therefore, ephemeral storage is the correct choice for this particular use case.