5. FILES › 5.5 SRL Magnetic Tape Media Reliability (SRLMMR) File › 5.5.4 SRLMMR Retrieval Example

5.5.4 SRLMMR Retrieval Example

This section presents a typical SRLMMR retrieval example.

    Print a list showing the number of temporary read errors
    on tape volumes and corresponding SIO count.  This can be
    used to determine if the tape media is meeting
    manufacturers' expected level of reliability.  Any tape
    volumes not meeting certain expected levels of
    reliability may need to be discarded.  In a few cases
    high temporary errors may be due to a tape unit
    malfunction.  If that is suspected a different tape drive
    should be used to verify that this is the case.

    PROC PRINT DATA=&PSRLD..SRLMMR01;
    VAR SYSID DEVTYPE DEVNUM MMRTEMPR MMRSIOCT;

    This example may be expanded to compute a ratio between
    temporary read errors and SIO counts and compare the
    value against a threshold ratio.  Any observation whose
    ratio of temporary read errors and SIO counts exceeds the
    thresholds may be printed.