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SCSI Commands
Read Error Counters Log (03h)
Sequential Access Device Log (0Ch)
Tape Alert Log (2Eh)
The Read Error Counters Log records read errors. The parameters on this page can
be reset to 0 with the Log Select command.
Page Code
03h
Parame-
Description
ter
0
Always 0.
1
Always 0.
2
Always 0.
3
Total errors corrected. This is total read retries less total unrecovered read er-
rors.
4
Total times error correction processed. This is the total number of read retries.
5
Total bytes processed. The is the total data sets read.
6
Total unrecovered errors. This is the total unrecoverable read errors.
The Sequential Access Device Log tracks the flow of data to and from the drive. It
also signals when drive cleaning is necessary.
Page Code
0Ch
Parameter
Description
0000h
Number of data bytes received from application clients during Write Com-
mand operations. This is the number of bytes transferred over the SCSI in-
terface before compression.
0001h
Number of data bytes written to the media as a result of Write Command op-
erations, not counting ECC and formatting overhead. This is the number of
data bytes transferred to media after compression.
0002h
Number of data bytes read from the media during Read command Opera-
tions, not counting ECC and formatting overhead. This is the number of data
bytes transferred from media with compression.
0003h
Number of data bytes transferred to the initiator(s) during Read Command
operations. This is the number of bytes transferred over the SCSI interface,
after decompression.
0100h
Cleaning required. A non-zero value of the cleaning required parameter indi-
cates that a condition requiring cleaning has been detected and a subsequent
cleaning cycle has not been completed. The cleaning required parameter is
persistent across hard resets and power cycles.
The Tape Alert Log Page provides information about errors and the status of the
drive and media.
Page Code
2Eh
Page Length
38h
Page Length
3Ch
Page Length
140h
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