HP 3PAR Recovery Manager Software for Microsoft SQL Server Licenses - Manual (Page 51)

NOTE: When mounting in read-write mode, the system uses VDS API to make the volume
read-writeable. However if there is another operation on the disk and the device is locked, you
cannot unmount the volume. If you attempt to unmount a locked volume, the system displays the
following error message:
ERROR: COM call “pVolumeMF->Dismount(TRUE,FALSE)” failed.
Returned HRESULT = 0x80042413
Error text: <Unknown error code>
Error: There was an expected HRESULT error catched: 0x80042413 <Unknown
error code>
This error message indicates the same issue as VDS_E_DEVICE_IN_USE.
To resolve the issue, restart the VDS service or reboot the machine.
NOTE: Recovery Manager for SQL only supports snapshot exposure to a host.
Recovery Manager Commands 51