Scalar and Other Tape Libraries: Understanding Tape Drive Performance
Performance specifications for any tape drive define what a drive is capable of producing in perfect, ideal conditions. Unfortunately, conditions are almost never perfect or ideal in your average library installation. There are many variables that can affect performance, and as a result, troubleshooting these issues can be a complex and challenging task.
Hewlett Packard (HP), one of the leading tape storage manufacturers, has put together an informative guide that explains the variables involved and gives steps that can be taken to troubleshoot these issues. The article also provides diagnostic utilties that you can use if you have an HP-branded tape device.
This HP guide is a recommended resource when you are trying to understand and identify performance-related problems.