Figure 1 shows an example of the service alerts contained in the Permanent and Recovered Error Summary Report.
All service alerts are noted by ERA 74 (library information data) in sense byte 3. The ERA modifier field (sense byte 8) specifies which group or category the particular ERA 74 belongs to, while the OTH (Other) field (sense bytes 11 and 12) contains additional information about ERA 74.
The modifier and OTH fields combined with the library manager error code (sense bytes 9 and 10) describe the specific reason for each ERA 74 service alert entry.
The following table lists the definitions of the OTH field for ERA 74 and addresses component unavailability (modifier byte 01) and component availability (modifier byte 02) for the OTH field.
| OTH Field | Definition |
|---|---|
| 0011 | The convenience input station is made unavailable or available. (See note.) |
| 0021 | The convenience output station is made unavailable or available. (See note.) |
| 004X | The hard disk is made unavailable or available. (See note.) The X is 1 for the primary disk or 2 for the backup disk. |
| 0051 | The dual write is made unavailable or available. (See note.) |
| 0111 | The cartridge accessor is made unavailable or available. (See note.) |
| 021X | The vision system is made unavailable or available. (See note.) The X is 1 for the bar code reader. |
| 111X | The grip is made unavailable or available. (See note.) |
| Note: Check the
modifier where 01 is unavailable and 02 is available.
|
|
Figure 1. Tape Library Service Alert 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 date obtained from bytes 8–11 of the OBR 23 log record.
- 5
- The time obtained from bytes 12–15 of the OBR 23 log record.
- 6
- The central processing unit obtained from bytes 20–21 of the OBR 23 log record.
- 7
- The status obtained from sense bytes 0–2 of the OBR 23 log record.
- 8
- The ERA obtained from sense byte 3 of the OBR 23 log record.
- 9
- The channel logical block number obtained from sense bytes 4–6 of the OBR 23 log record.
- 10
- The sense format obtained from sense byte 7 of the OBR 23 log record.
- 11
- The library error modifier obtained from sense byte 8 of the OBR 23 log record.
- 12
- The library manager error code obtained from sense bytes 9–10 of the OBR 23 log record.
- 13
- Contains zeros or contains additional information obtained from sense bytes 11–12 of the OBR 23 log record.
- 14
- The volume serial number of the OBR 23 log record.
- 15
- The software EC level obtained from sense byte 19 of the OBR 23 log record.
- 16
- The subsystem ID obtained from sense byte 20 of the OBR 23 log record.
- 17
- The encoded serial number of the 3494 library.
- 18
- The control unit channel interface information obtained from sense byte 24 of the OBR 23 log record.
- 19
- The subsystem features obtained from sense byte 25 of the OBR 23 log record.
- 20
- The control unit microcode EC level obtained from sense byte 26 of the OBR 23 log record.
- 21
- The control unit hardware information and serial number obtained from sense bytes 27–29 of the OBR 23 log record.
- 22
- The drive address obtained from sense byte 30 of the OBR 23 log record.
- 23
- Reserved—obtained from sense byte 31 of the OBR 23 log record.
- 24
- The volume serial number in printable form obtained and converted from sense bytes 13–18 of the OBR 23 log record.