A Hyper-V Instant Recovery or SureBackup Job fails with the error message:
Cannot restore to the backup repository host when storage VSP is enabled.
To prevent situations where a Hyper-V Instant Recovery or SureBackup Job could cause an I/O freeze for a volume or hang of the VSS framework of a host, starting with Veeam Backup & Replication v8, when the following conditions are met, the operation is prevented from occurring:
The solutions will depend on your circumstances. Review the following options.
Performance Tuning Guidelines for Windows Server 2012 describes I/O balancing:
“The virtualization stack balances storage I/O streams from different virtual machines so that each virtual machine has similar I/O response times when the system’s I/O bandwidth is saturated.” The document goes on to describe options for tuning or disabling this setting, but notes: “We do not recommend this advanced tuning option unless you have a specific reason to use it. These registry keys may be removed in future releases.”
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