

Exchange uses a Database Availability Group (DAG) that keeps track of each mailbox database that exists and replicates to multiple systems. This is how Exchange and other systems work. If you have a hot-standby you can switch out the systems while the other restarts. Otherwise you are just messing up my ask for assistance. So if you have some relevant info to my actual issue I would appreciate to hear from you. Of course we have all above measures, but that does not change the fact that we can reboot the computer. No, we have a computer which could cause us to lose more than 100.000 at downtime, but it is not connected to a UPS. You could then update the hot-standby computer, manually switch over to it, update the regular computer, and wait for the next cycle. One of which would be the hot-standby computer. And when there's a power outage? Is it on UPS? When that goes, is there a Generator? What about when a hard drive dies? Is there a hot standby system available?ĪLL SYSTEMS that need HA, need to have measures in place to allow for such HA.
