Seagate Viper 200, Руководство по интерфейсу SCSI

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