Data Compression Transfer Log Page Code 39H - Sony AIT-SDX460 Product Specifications Manual

7. ATAPI Packet Command Specification
Code
0001h Frame Read or Write
0002h Main Data SYMN Block Errors CH1
0003h Main Data SYMN Block Errors CH1
0004h Reserved
0005h Reserved
0006h Reserved
0007h Reserved
0008h Total Retry Count (Read Only)
0009h c2 un-correctable Block (Read Only)
Block_Error_Rate [CH1] = Param0002h / (Param0001hx224)
Block_Error_Rate [CH2] = Param0003h / (Param0001hx224)
7.6.10.

Data Compression Transfer Log Page Code 39h

This page allows the host to monitor the performance of the ALDC compression. The page has the following
format:
Table 7-28: LOG PAGE Data Compression Transfer (39h)
Bit 7
Byte
0 Reserved
1
2 (MSB)
3
4 (MSB)
5
6 0 (DU)
7
8
11
Data Compression Log Page Fields:
Supported Parameter Codes in this page and their meanings are as follows:
Parameter Code
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
000Ah
000Bh
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.
7-22
Table 7-27: Frame Error Counter Page Parameters
Description
6 5
1 (DS) 0 (TSD) 0 (ETC)
Number of entities written
Number of entities read
Number of records written
Number of records read
Kilobytes to data compression
Kilobytes from data compression
Kilobytes to tape
Kilobytes from tape
Logical entity size
Physical entity size
Uncompressed entities
Parameter Length Default Cumulative
(Bytes)
4
4
4
4
4
4
4
4
4
4 3
Page Code (39h)
Reserved
Page Length (58h)
Parameter Code (n)
00 (TMC)
Parameter Length (4)
Parameter Value
Description
SONY AIT-1Turbo drive SDX-460V series Ver.1.0
LOG SENSE
Default Threshold
0 FFFFFFFFh
0 FFFFFFFFh
0 FFFFFFFFh
0 FFFFFFFFh
0 FFFFFFFFh
0 FFFFFFFFh
0 FFFFFFFFh
0 FFFFFFFFh
0 FFFFFFFFh
2 1 0
(LSB)
(LSB)
Reserved 0 (LP)