With the gradual implementation of the “Golden Health Card Project”, improving the “China Golden Health Network” has become one of the most important things for hospitals. The most important idea of ​​the “China Golden Health Network” is to build a hospital information system. This information system is not only about storing this information, but also about providing it for others to read. Therefore, a single storage system cannot meet the construction of the information system. We also need to add some servers outside the storage system. Through these servers, we can spread our information to others. The HIS system has developed from the initial financial-oriented to the current patient-centered, from simple text data to multimedia data such as sound and images, and the amount of stored data has increased rapidly year by year. In particular, large-capacity digital images such as X-rays, CT and MR have caused a sharp expansion in the amount of medical information. Traditional cluster solutions mostly use the “2+1” (i.e., one disk array between two servers) “dual-machine hot backup” mode. This independent disk array that exists to share data between the two servers often becomes a prominent failure point of the core system: once the disk array fails, the entire system will shut down. As a hospital operating 7×24, the impact of this unexpected shutdown on the business can be imagined.