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6.Command Specification
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 × 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.
6.6.12. AIT Log Page (Sony Unique)
This page is for the AIT original Tape Log. The AIT Tape Log of each fields are larger than legacy Tape Log Page.
The legacy Tape Log Page returns the part of AIT original. This page indicated the Partition Information at the
current Partition.
Bit
7
Byte
0
1
2
(MSB)
3
Bit
7
Byte
0
(MSB)
1
2
DU (0)
3
4
(MSB)
N
Parameter Code:
Code
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
000Ah
000Bh
000Ch
000Dh
000Eh
000Fh
0010h
0011h
0012h
6-30
Table 6-33: AIT Log Page
6
5
Page Code (3Ch)
Page Length (n+1)
6
5
Parameter Code (0001h - 0012h and 0101h - 0112h)
DS (1)
TSD (0)
ET (0)
Parameter Length (n-3)
Parameter Value
Description
Current Groups Written
Current Rewritten Tracks
Current Groups Read
Current C3 ECC Count
Previous Groups Written
Previous Rewritten Tracks
Previous Groups Read
Previous C3 ECC Count
Total Groups Written
Total Rewritten Tracks
Total Groups Read
Total C3 ECC Count
Load Count
Access Count
Update Replace Count
Last Valid Absolute Frame Number
Partition Attribute
Maximum Absolute Frame Number
4
3
2
Reserved
4
3
2
TMC (00)
Length
SONY AIT-3Ex drive SDX-800V series Ver.1.0
LOG SENSE
1
0
(LSB)
1
0
(LSB)
LBIN (0)
LP (0)
(LSB)
8
8
8
8
8
8
8
8
8
8
8
8
4
4
8
8
8
8
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