Diagnostic information This section provides various diagnostic tools and information. IBM Tape Diagnostic tool (ITDT)The IBM Tape Diagnostic Tool (ITDT) is an independent tool that provides diagnostics on tape drives and libraries. ITDT has multiple functional capabilities and is a quick, convenient, and efficient method for drive firmware updates. As a note, drive memory dump retrievals are completed by the tool as well.Event codesEvents are used in the library Ticket and Event system to store all types of events with a unique event code and event description. TapeAlert flagsThis section is intended to provide information to the reader about the tape drive by using TapeAlert technology. Sense dataWhen a drive encounters an error, it provides sense data as a response to the host.Drive Error Codes: Single-character display (SCD)SCD drive error codes give descriptions of the errors and messages that pertain to the drive.Parent topic: Troubleshooting