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Sony SDX-800V/R User Manual

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LOG SENSE 
6.Command Specification
SONY AIT-3Ex drive SDX-800V series Ver.1.1 
 
6-29 
Table 6-31: Read and Write Frame Error Counter Page Parameter format 
Bit 
Byte 
7 6 5 4 3 2 1 0 
0 
(MSB) 
 
1 
 
Parameter Code 
(LSB) 
2 
DU 
(0b) 
DS 
(1b) 
TSD 
(0b) 
ETC 
(0b) 
TMC 
(00b) 
LBIN 
(0b) 
LP 
(0b) 
3 
Parameter Length (4) 
4 
(MSB) Parameter 
Value 
 
7 
  
(LSB) 
 
6.6.11.   Data Compression Transfer Log Page (Sony Unique) 
The page allows the host to monitor the performance of the ALDC compression. The PC field in LOG SENSE 
determines whether current cumulative, or current/default threshold values are returned. The page has the following 
format: 
Table 6-32: Data Compression Transfer Log Page 
Bit 
Byte 
7 6 5 4 3 2 1 0 
0 
Reserved 
Page Code (39h) 
1 
Reserved 
2 
(MSB) 
Page Length (58h) 
 
3 
  
(LSB) 
4 
(MSB) 
Parameter Code (n) 
 
5 
  
(LSB) 
6 
DU (0) 
DS (1) 
TSD (0)
ETC (0)
TMC (00) 
LBIN (0) 
LP (0) 
7 
Parameter Length (4) 
8 
(MSB) Parameter 
Value 
 
11 
  
(LSB) 
Data Compression Log Page Fields: 
Supported Parameter Codes in this page and their meanings are as follows: 
Code Description 
0001h 
0002h 
0003h 
0004h 
0005h 
0006h 
0007h 
0008h 
0009h 
000Ah 
000Bh 
Number of entities written  
Number of entities read 
Number of records written 
Number of records read 
Megabytes to data compression 
Megabytes from data compression 
Megabytes to tape 
Megabytes from tape 
Logical entity size 
Physical entity size 
Uncompressed entities 
Entities Written/Read: The total number of complete entities written to or read from the tape since the last power-on 
or Clear Log operation. 
Records Written/Read: The total number of records (both compressed and uncompressed) written to or read from 
the tape since the last power-on or Clear Log operation.