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.