Tape Library

Tape Library

Cyber resilient, energy-efficient tape storage with airgap and long-term retention

 View Only
Back to threads
Expand all | Collapse all

LTO Health Test - Performance passing with CLI but failing with GE

  • 1.  LTO Health Test - Performance passing with CLI but failing with GE

    Posted Tue January 07, 2025 08:44 AM
    Edited by Lorraine Rizzuto Wed January 08, 2025 10:04 AM
    Reply

    Good afternoon, I'm wondering if anyone can help.

    I ran a Health Test yesterday with one of my LTO 4 drives after changing the SAS card. I ran the test with the ITDT Graphical Edition which I hadn't used before, but the test failed on performance with write speed being the issue. Previously the same drive with same new tape passed with the IDTD Command Line Interface, so after this failure, I ran again with the CLI and it passed.

    Would anyone know if there are any test differences between the two or what the issue could be? I've only ever used the CLI for drive tests, so haven't suspected a thing in the past.

    Thank you.



    Edit: I ran it again and this time it was fine........just one of those things I suppose!



  • 2.  RE: LTO Health Test - Performance passing with CLI but failing with GE

    Posted Fri January 24, 2025 10:39 AM
    Reply

    @Anthony C It is possible that the head originally had some debris on it causing Error Recovery Procedures (ERP) to be performed. During the processing of the tape the debris was cleaned off the head. It is known that processing a tape can clean debris from the head. Without drive logs it is not possible to determine the root cause of the lower performance. 



    ------------------------------
    Kevin Butt
    IBM, Tape Development Ecosystem
    Tape SCSI Architect, T10 Representative
    ------------------------------

    Original Message