• Volumes only reachable through a GUID path are not supported.

• Backup source arguments that aren’t drive letters or volume mount paths that begin with a drive letter are not supported.

• Paths as backup source arguments to onQ that are not volumes or volume mount points are not supported when using with VSS.

• Volume mount points cannot contain the characters outside of A-Z, a-Z, 0-9, underscore and a dash. A volume mount point with spaces is supported for Windows RNs, but not for Linux RNs.

• Total string length of drive letter mounts and volume mount points, including separators, in excess of 250 characters is not supported.

• Volume mount point that are based on a volume that has other mount points that refer to it (multiple mount points) are not supported.

• Volume mount points used to protect MS cluster environment on onQ are not supported.

• Volume mount points might not be visible on the RN under certain circumstances if the folder that contains the mount points is hidden or in a system folder. You might need to set the folder attributes to display system/hidden folders so as to display mount points.

• A maximum of 15 logical drives can be protected per agent‑based PN and 14 per agent‑less PN.