您好，
我们有exchange server 2019集群服务器，在上海有一台DC主域控和一台辅域控，有一台exchange server 2019成员服务器，在香港有一台exchange成员服务器，对外的邮箱域名指向的是上海的exchange服务器
最近发现上海的exchange成员服务器莫名自动重启了，不知道是什么原因，服务器日志反复出现以下报错：
Database availability health check failed.Database copy: Mailbox Database xxxxxxxx
Redundancy count: 1
Error: There were database availability check failures for database 'Mailbox Database xxxxxxxxx' that may be lowering its availability. Availability Count: 1. Expected Availability Count: 2. Detailed error(s):
