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SCSI Commands
Tape Capacity Log (31h)
Data Compression Log (32h)
Parameter
Description
2
Total Data Sets Written
3
Total Write Retries
4
Total Unrecovered Write Errors
5
Total Suspended Writes
6
Total Fatal Suspended Writes
7
Total Data Sets Read
8
Total Read Retries
9
Total Unrecovered Read Errors
10
Reserved
11
Reserved
12
Total Suspended Append Writes
The Tape Capacity Log returns information about the tape capacity. All values are in
6
) and assume no data compression . The Page Control, PC, field
millions of bytes (10
is ignored and accumulated values are always returned.
Page Code
31h
Parameter
Description
1
Main partition remaining capacity
2
Always 0
3
Main partition maximum capacity
4
Always 0
The Data Compression Log records compression information. The parameters on
this page can be reset to 0 with the Log Select command
Page Code
32h
Parameter
Description
0
Read compression ratio in percent
1
Write compression ratio in percent
2
Millions of total bytes transferred to host
3
Remaining bytes of total bytes transferred to host
4
Millions of total bytes read from tape
5
Remaining bytes of total bytes read from tape
6
Millions of total bytes transferred from host
7
Remaining bytes of total bytes transferred from host
8
Millions of total bytes written to tape
9
Remaining bytes of total bytes written to tape
Parameters 2 through 9 occur as pairs each of which represents a total number of
bytes (i.e., total number of bytes transferred to host as with Parameter 2 and 3 pair.)
Page Length
20h
Page Length
4Ch
Page 49
Length
8
4
2
2
2
8
4
2
2
2
2
Length
4
4
4
4
Length
2
2
4
4
4
4
4
4
4
4
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