any changes made in environment. you can be facing ghost drive problem in windows. you can try below steps
run a Netbackup Windows environment and get the “missing path” a
lot. It’s usually caused by ghost devices and here’s how to fix it.
Delete the “missing path” devices from the Device -> Drives portion of the NBU GUI.
Then go to the media server the drives are connected to and open up a CMD.EXE prompt.
Type in “set devmgr_show_nonpresent_devices=1″ (notice underscores) then type “start devmgmt.msc”.
The device management snapin should appear. Under the View menu, select “show hidden devices”.
Drill down to your tapes drives. If you see any tape drive devices that are grayed out, delete them.
While you’re there, verify that all the tape drives have Symantec drivers and not the built in Windows driver.
Reboot the media server.
When it comes back up use the same procedure to verify that the
correct number of devices are showing in device manager and that there
are no ghost devices.
Then go to your NBU GUI and run the device discovery wizard for
that media server. The correct tape devices should now show up in the
GUI and without the “missing path”.
I have tried to use the GUI and CLI to delete all devices from the Master Server and all Media Servers (NBU 7.0.1 Windows Pure).
But I am seeing many issues, one being that the "drives names" are all over the place, Drive Index numbers across media servers are different, and I cannot be sure if we are really getting hardware issues, or if its a misconfig under NBU.
Is there any other location or deletion of settings I cna remove, so I can get everything looking right, including the drive names? They all used to be Drive1-SCSI.000, then Drive2-SCSI.001 and so on up to the last drive, but now drive 1 seems to point to physical drive 8, and drive 2 is physically known as drive 6! Its all wrong.
