IBM TS2340 User Guide - Page 305

a2500244 IBM Tape Diagnostic Tool Figure 84. Tape Usage Screen 1. After starting ITDT-SE, type S followed by the Enter key to activate the device scan. 2. Select the device you want to test by entering its number and press the Enter key. 3. Type U followed by the Enter key to start the tape usage log retrieval. ITDT-SE then switches to the tape usage screen. If no cartridge is inserted, ITDT-SE prompts to insert a cartridge. Either insert a cartridge and press the Enter key or stop the test by entering C followed by the Enter key. During the get logs operation, the program shows a progress indicator in form of a bar of hash marks (#) that shows the progress of a single sub-operation as well as a description of that operation. If all sub-operations are finished, ITDT-SE shows a Tape Usage completion screen. The Status field on the bottom right side indicates PASSED if the log retrieval completed successfully and ABORTED otherwise. Other Other [O] - type O followed by the Enter key to display a screen with the following commands: v "System Test" v "Library Self-Test" on page 289 v "Manual Inspect" on page 289 v "Return" on page 290 System Test The System Test [Y] is a short test that performs the following: v Reveals system performance bottlenecks. Compressible data throughput values can reveal bandwidth limitations caused by the system or cabling or HBA. v Measures performance variations across the different block sizes to find the ideal block size for the system configuration. The System Test only runs on tape drives, not on autoloaders or libraries. To perform a System Test on tape drives within a library, the library must be in online mode. Chapter 10. IBM Tape Diagnostic Tool (ITDT) 287