Sony SDX-800V/R ユーザーズマニュアル

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6.Command Specification 
LOG SENSE
6-30 
 
SONY AIT-3Ex drive SDX-800V series Ver.1.1 
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.  
Table 6-33: AIT Log Page 
Bit 
Byte 
7 6 5 4 3 2 1 0 
Page Code (3Ch) 
Reserved 
(MSB) 
Page Length (n+1) 
 
  
(LSB)
 
Bit 
Byte 
 
6 5 4 3 2 1 0 
(MSB) 
Parameter Code (0001h - 0012h and 0101h - 0112h) 
 
  
(LSB)
DU (0) 
DS (1) 
TSD (0)
ET (0) 
TMC (00) 
LBIN (0) 
LP (0) 
Parameter Length (n-3) 
(MSB) Parameter 
Value 
 
  
(LSB)
Parameter Code: 
Code Description 
Length
0001h 
0002h 
0003h 
0004h 
0005h 
0006h 
0007h 
0008h 
0009h 
000Ah 
000Bh 
000Ch 
000Dh 
000Eh 
000Fh 
0010h 
0011h 
0012h 
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