Figure 1 shows a tape library permanent error summary report.
Note: Permanent errors are outboard recorder (OBR) format 23 records
with the temporary bit off. Recovered errors are OBR format 23 records
with the temporary bit on.
Figure 1. Tape Library Permanent Error
Summary Example
- 1
- Report Date, Period From, Period To
- REPORT DATE is the Julian date the report ran.
- PERIOD FROM is the Julian date of the earliest record.
- PERIOD TO is the Julian date of the latest record.
- 2
- The sense data from the OBR 23 log record.
- 3
- The channel path ID obtained from byte 49 (or offset 49 decimal) of the OBR 23 log record.
- 4
- The device number or the control unit address obtained from the
offset (decimal) OBR format 23 log record.
Because of the way unsolicited unit checks are handled, this field can contain the address of devices that are not physically present.
- 5
- The date obtained from bytes 8–11 of the OBR 23 log record.
- 6
- The time obtained from bytes 12–15 of the OBR 23 log record.
- 7
- The central processing unit obtained from bytes 20–21 of the OBR 23 log record.
- 8
- The status obtained from sense bytes 0–2.
- 9
- The ERA code obtained from sense byte 3 of the OBR 23 log record.
- 10
- The channel logical block number obtained from sense bytes 4–6 of the OBR 23 log record.
- 11
- The sense format obtained from sense byte 7 of the OBR 23 log record. Sense byte 7 is 23 to indicate format 23.
- 12
- The library error modifier obtained from sense byte 8 of the OBR 23 log record.
- 13
- The library manager error code obtained from sense bytes 9–10 of the OBR 23 log record.
- 14
- Contains zeros or contains additional information obtained from sense bytes 11–12 of the OBR 23 log record.
- 15
- The volume serial number of sense bytes 13–18 of the OBR 23 log record.
- 16
- The software EC level obtained from sense byte 19 of the OBR 23 log record.
- 17
- The subsystem ID obtained from sense byte 20 of the OBR 23 log record.
- 18
- The encoded serial number of the 3494 library.
- 19
- The control unit channel interface information obtained from sense byte 24 of the OBR 23 log record.
- 20
- The subsystem features obtained from sense byte 25 of the OBR 23 log record.
- 21
- The control unit microcode EC level obtained from sense byte 26 of the OBR 23 log record.
- 22
- The control unit hardware information and serial number obtained from sense bytes 27–29 of the OBR 23 log record.
- 23
- The drive address obtained from sense byte 30 of the OBR 23 log record.
- 24
- Reserved—obtained from sense byte 31 of the OBR 23 log record.
- 25
- The volume serial number in printable form obtained and converted from sense bytes 13–18 of the OBR 23 log record.