SCSI Commands: 21BLOG SENSE
Page
50
If the Parameter Pointer field is set to 0, all parameters for that particular page are
returned up to the maximum number of bytes specified in the allocation length.
Regardless of the starting parameter code specified in the Parameter Pointer field,
the page header is always returned.
3.9.3
Log Pages
There are several logs of different formats that allow you to retrieve different drive
parameters. The following logs are supported:
Log Page
See Page
Supported Log Pages Log Page (00h)
52
Write Error Counters Log Page (02h)
54
Read Error Counters Log Page (03h)
55
Sequential Access Device Log Page (0Ch)
55
Temperature Log Page (0Dh)
56
TapeAlert Response Log Page (12h)
57
Device Statistics Log Page (14h)
56
Tape Diagnostic Data Log Page (16h)
60
Protocol Specific Port Log Page (18h) (SAS only)
63
TapeAlert Log Page (2Eh)
66
Tape Usage Log Page (30h)
72
Tape Capacity Log Page (31h)
73
Data Compression Log Page (32h)
74
Error Events Log Page (33h)
74
Tape Device Statistics Log Page (3Eh)
77
Only one log page is transferred to the host with each LOG SENSE command. The
Page Code field (Byte 2) of the CDB specifies the page to be transferred.
A four-byte page header precedes the parameter data for each page. The page
header specifies the page code returned and the length of that page in bytes.
Following the page header are the log parameters. Each log parameter is a data
structure that contains several description bytes followed by the parameter value
itself.
Log Page Header
Log Page Header is always returned.
First Log Parameter
…
Multiple Log Parameters are returned in each log
page. The log parameters are returned in
ascending order.
Last Log Parameter
Summary of Contents for LTO 4
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