Commands 65
Commands
Write Error Counters Log Page
The Write Error Counters log is page 02h. The Page Length is 38h. There are
seven parameters, 0 through 6. Parameters 0 through 2 are not supported and
are returned as zero. All fields are four bytes long.
All these counters are updated when the data set is physically written. They
relate to the current tape and are cleared when the tape is unloaded.
This data can be reset to zero, but not written.
2
(MSB)
Page Length (09h)
3
(LSB)
4
Supported Pages (00h)
5
Write Error Counters (02h)
6
Read Error Counters (03h)
7
Sequential Access Device Log (0Ch)
8
TapeAlert Log (2Eh)
9
Tape Usage Log (30h)
10
Tape Capacity Log (31h)
11
Data Compression Log (32h)
12
Performance Log (34h)
7 6 5 4 3 2 1 0
Parm. Definition Description
0 Errors corrected without substantial delay Total number of errors corrected without delay
1 Errors corrected with possible delays Total number of errors corrected using retries
2 Total Sum of parameters 3 and 6
3 Total errors corrected The number of data sets that needed to be rewritten
4 Total times error correction processed Number of CCQ sets rewritten
5 Total data sets processed The total number of data sets written
6 Total uncorrected errors The number of data sets that could not be written
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