Have you checked Event Viewers in guest OS and on Hyper-V host? Also please check HV host's disk subsystem with a perfmon. The idea behind my suggestion is that Veeam One does not create events and errors at will - it just processes data that is coming from somewhere (HV host for example).If there are no traces of error in guest OS logs and Hyper-V host logs, and perfmon does not show that disks are under heavy usage then that might be a false positive. In such case please open a ticket with support and post your case ID here.This error is just visible in VO, I cannot find any hints regarding this message neither on the vms nor on the cluster hosts.
Alarm:VM disk errors
Details:"Errors/min" (16.0 Number) is above a defined threshold (8.0 Number)
Summary:This VM has logged one or more errors that have occurred on its virtual device
Cause:The error count should always be zero for the virtual storage device
Resolution:Check the status of the disk subsystem and connectivity. Check for possible disk hardware, firmware or driver issues. See historical graph of error counts
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