(1) Based on the highly available design architecture, its redundancy mechanism can store multiple copies of data to ensure that disk and server failures will not affect desktop and data availability. (2) Support SSD + mechanical hard disk hybrid design mode. SSD is used to cache hot spot data of cloud desktop and mechanical hard disk is used to store personal data. In order to ensure the use effect, SSD cache hit rate is required to be not less than 60%, so as to improve IO performance of cloud desktop and enable users to obtain optimal user experience.