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

10 Troubleshooting
In this chapter:
• “General Procedure” on page 61
• “Verifying USB installation for optimum performance” on page 63
• “Frequently asked questions about USB drivers” on page 64
• “Problems with cartridges” on page 65
Many users can use HP Library & Tape Tools to help them diagnose problems, see
“Diagnostic tools” on page 57. We also recommend the detailed troubleshooting guide at http://
www.hp.com/go/support for comprehensive troubleshooting information.
General Procedure
If a problem occurs, the first step is to try to establish whether the problem lies with the cartridge, the
drive, the host computer and connections, or the way the system is being operated.
Has the system just been installed?
There could be an installation problem:
1. Check through the information in the relevant installation chapter of this guide.
2. Are you connected to a USB 2.0 port? Are there any other devices attached to the same USB
hub/controller? See also “USB Configuration Guide” on page 69.
3. Check the environmental conditions against the specified limits.
4. Are appropriate drivers and application software installed on the host?
Are you using new cartridges or a different brand of cartridge? Have you been using the particular
cartridge for a very long time?
The problem could lie with the cartridge:
1. Check through “Use the correct media” on page 45.
2. Check that you are using a DDS-labeled cartridge—not a DAT cartridge.
DAT USB Tape Drives 61