Exploring Hyper-V Replica in Greater Detail
So far we have talked about Hyper-V Replica functionality at a higher level. This section provides more detail so you can better understand and troubleshoot HVR.
Hyper-V Replica Logging and Swapping
HVR is quite tolerant of the brief outage that occurs; it isn’t going to alert you unless 20 percent or more of replications fail during the default Monitoring Interval of 12 hours (more on this later in the chapter). To understand how HVR deals with replication failure, you need to dig a little deeper into the replication process.
Each VHD (or VHDX) that is being replicated has a HRL file that is kept in the same folder as the VHD. Changed blocks are logged in this file. HVR will attempt to do the following ...
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