HP StorageWorks DAT USB Tape Drives User Guide (DW049-90916, June 2010)

2. Right click on the My Computer icon on the desktop, then click Manage.
3. Click Device Manager from the right hand pane of the management console.
4. Select Devices by connection from the View menu.
5. Navigate through the hardware tree in the right hand pane to locate the tape device.
6. Immediately above the device in the tree will be the USB Mass Storage layer driver, this should
display HP USB Mass Storage Device. If it displays simply USB Mass Storage Device, the Microsoft
driver is loaded and should be replaced
Check drivers (Linux)
Use the following procedure to check that both drivers are present:
1. usb_storage driver
• At the command prompt type:
lsmod | grep usb_storage
• The output of this command should contain a line similar to:
usb_storage 61193 0
• If this line is not present, type:
modprobe usb_storage
at the command line to load the usb-storage driver.
2. st tape driver
• At the command prompt type:
lsmod | grep st
• The output of this command should contain a line similar to:
st 35933 0
• If this line is not present, type:
modprobe st
at the command line to load the st driver.
Frequently asked questions about USB drivers
I installed my HP USB tape drive then powered on my server. Windows didn't run the Found New
Hardware wizard and the drive appears to work OK. Is there anything I need to do to make my drive
function optimally?
It is likely that Windows installed a driver for the tape drive using Windows Update when the system
booted up.
• DAT 320 models: It will have installed the Microsoft usbstor driver, which is correct for this tape
drive, but it may be running an out-of-date hpdat driver. Run the installer from the StorageWorks
CD in order to update the hpdat driver.
• All other models: It will not have installed the HPUSBMSC.SYS driver, which is recommended, and
may be running an out-of-date hpdat driver. Run the installer from the StorageWorks CD in order
install the HPUSBMSC.SYS driver and, if necessary, update the hpdat driver.
I plugged in the HP USB tape drive with my server powered on and installed drivers from the
StorageWorks CD when prompted by the “Found New Hardware” Wizard. Do I need to do anything
else?
Troubleshooting64