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LOG SENSE
Kilobytes to/from Data Compression: The total number of kilobytes written to or read from the tape since the
last power-on or Clear Log operation. For Kilobytes from Data Compression, this number may be greater than the
number of kilobytes transferred to the host due to read ahead.
Logical Entity Size: The logical size of the last entity written to or read from the tape: size = number of record in
entity x record size in bytes.
Physical Entity Size: The physical size of the last entity written to or read from the tape: size = entity header
length + uncompressed data length.
Uncompressed Entities: The total number of times non-ALDC entities have been encountered on the tape during
read operations since the last power-on or Clear Log operation.
7.6.11.
AIT Log Page Code 3Ch
This page is for the AIT original Tape Log. The AIT Tape Log of each field is larger than the legacy Tape Log Page.
The legacy Tape Log Page returns the part of AIT original. This page has the following format.
Bit
7
Byte
0
Reserved
1
2
(MSB)
3
4
(MSB)
5
6
0 (DU)
7
8
n
Supported Parameter Code in this page are listed below with their meaning:
Parameter Code
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
000Ah
000Bh
000Ch
000Dh
000Eh
000Fh
0010h
0011h
0012h
SONY AIT-1 Turbo drive SDX-470V series Ver.1.0
Table 7-29: LOG PAGE AIT (3Ch)
6
5
Parameter Code (0001h – 0012h and 0101h – 0112h)
1 (DS)
0 (TSD)
0 (ETC)
Parameter Length (n-7)
Description
Current Number of Groups Written
Current RAW Retries
Current Number of Groups Read
Current C3 ECC Retries
Previous Number of Groups Written
Previous RAW Retries
Previous Number of Group Reads
Previous C3 ECC Retries
Total Number of Groups Written
Total RAW Retries
Total Number of Groups Read
Total C3 ECC Retries
Load Count
Access Count
Update Replace Count
Last Valid Absolute Frame Number
Partition Attribute
Maximum Absolute Frame Number
7. ATAPI Packet Command Specification
4
3
Page Code (3Ch)
Reserved
Page Length (n+1)
00 (TMC)
Parameter Value
2
1
0
(LSB)
(LSB)
Reserved
0 (LP)
Length (bytes)
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
7-23
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