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Read Error Counters Log Page
Parm.
0
Errors corrected without substantial delay Total number of errors corrected without delay
1
Errors corrected with possible delays
2
Total
3
Total errors corrected
4
Total times error correction processed
5
Total bytes processed
6
Total uncorrected errors
Sequential Access Device Log Page
Parm.
01h
02h
03h
04h
0100h
66
Commands
The Read Error Counters log is page 03h. 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 read. They relate
to the current tape and are cleared when the tape is unloaded.
Definition
This data can be reset to zero, but not written.
The Sequential Access Device Log page is page 0Ch. The Page Length is 40h.
Five parameters are supported, all eight bytes long:
The number of data bytes received from application clients during write command
operations. This is the number of bytes transferred over SCSI, before compression.
The number of data bytes written to the media as a result of write command operations,
not counting the overhead from ECC and formatting. This is the number of data bytes
transferred to media, after compression.
The number of data bytes read from the media during read command operations, not
counting the overhead from ECC and formatting. This is the number of data bytes
transferred from media with compression.
The number of data bytes transferred to the initiator or initiators during read command
operations. This is the number of bytes transferred over SCSI, after decompression.
Cleaning required, a non-volatile cleaning indication.
Description
Total number of errors corrected using retries
Sum of parameters 3 and 6
The number of data sets that were corrected after a
read retry
Number of times C2 correction is invoked
The total number of data sets read
The number of data sets that could not be read after
retries
Description
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