# 3995 Optical Drives Error Summary

This optical drives error summary presents all 3995 cartridge statistical data, counted and sorted by CUA and CPU, followed by totals and averages.

Figure 1 shows an example of the 3995
optical drives error summary.

- 1
- 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
- DEVNO/CUA is the device number.
- 3
- CPU is the CPU serial number.
- 4
- DRIVE NAME is the name of the drive.
- 5
- CARTRIDGE MOUNTS is the count of cartridge mounts on a specific CUA/CPU.
- 6
- Total number of megabytes read (READ) divided by the number of permanent read errors (CT) on a specific CUA/CPU.
- 7
- Total number of megabytes written (WRITE) divided by the number of permanent write errors (CT) on a specific CUA/CPU.
- 8
- Total number of megabytes read (READ) divided by the number of temporary read errors (CT) on a specific CUA/CPU.
- 9
- Total number of megabytes written (WRITE) divided by the number of temporary write errors (CT) on a specific CUA/CPU.
- 10
- Total number of megabytes read (READ) and total number of megabytes written (WRITE) on a specific CUA/CPU.
- 11
- Total number of permanent (PERM) and temporary (TEMP) seek errors on a specific CUA/CPU.
- 12
- Total number of permanent (PERM) and temporary (TEMP) load/unload errors on a specific CUA/CPU.
- 13
- TOTALS by column of all the CUA/CPUs.
- 14
- AVERAGE MEGABYTES/TEMPORARY READ ERROR is the total number of megabytes read divided by the total number of temporary read errors for all CUAs/CPUs. AVERAGE MEGABYTES/TEMPORARY WRITE ERROR is the total number of megabytes written divided by the total number of temporary write errors for all CUAs/CPUs. AVERAGE MEGABYTES/TEMPORARY READ/WRITE ERROR is the total number of megabytes processed (both read and write) divided by the total of temporary errors for all CUAs/CPUs. AVERAGE MEGABYTES/PERMANENT READ ERROR is the total number of megabytes read divided by the total number of permanent read errors for all CUAs/CPUs. AVERAGE MEGABYTES/PERMANENT WRITE ERROR is the total number of megabytes written (on all CUAs/CPUs) divided by the total number of permanent write errors for all CUAs/CPUs. AVERAGE MEGABYTES/PERMANENT READ/WRITE ERROR is the total number of megabytes read/written divided by the total number of permanent errors for all CUAs/CPUs. . TOTAL MEGABYTES PROCESSED is the total number of megabytes read/written for all CUAs/CPUs.
- 15
- CPU, MODEL, SERIAL NUMBER further identifies the CPU listed in the report (370-XA mode if MODEL ends in X'XA').