Sony SDX-800V/R User Manual

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SONY AIT-3Ex drive SDX-800V series Ver.1.1 

Page Code: The Page Code field identifies which log page is being requested by the initiator. If the page is not 

supported then the command will terminate with a CHECK CONDITION status with the sense key set to ILLEGAL 

REQUEST and an additional sense code of INVALID FIELD IN CDB. 

 Supported pages are: 

Page Code 

Description 

00h 
02h 
03h 
07h 

2Eh 

30h 
31h 
33h 
34h 
35h 
39h 

3Ch 
3Dh 
3Eh 

Supported Log Pages 
Write Error Counter Page 
Read Error Counter Page 
Last n Error Events Page 
Tape Alert Log Page 
Tape Log Page (Sony Unique) 
Tape Capacity Log Page 
Drive Usage Page (Sony Unique) 
Write Frame Error Counter Page 
Read Frame Error Counter Page 
Data Compression Transfer Log Page 
AIT Log Page 
AIT Fixed Length Information Page for MIC 
AIT Variable Length Information Page for MIC 

Parameter Pointer: The Parameter Pointer field allows the host to specify at which parameter within a log page the 

requested data should begin. 

For example if a page supported parameters 0 through 5, and the Parameter Pointer field contained 3 then only 

parameters 3, 4 and 5 would be returned to the initiator. Similarly, if a page supported parameters 1, 3 and 6, and the 
Parameter Pointer field contained 2, then only parameters 3 and 6 would be returned to the initiator. 

Note that parameters within a page are always returned in ascending order according to parameter code. If an 

invalid parameter pointer is sent the drive will return CHECK CONDITION with the sense key set to ILLEGAL 

REQUEST and an additional sense code of INVALID FIELD IN CDB. 

Allocation Length: The Allocation Length field is used to inform the target how much space the initiator has 

allocated for data. Note however that if this field is 0 then this is not considered an error and the device will just return 
a GOOD STATUS. 

The format of the log pages consists of ZERO or more variable-length parameter structures. Each page begins with 

a 4-byte page header followed by ZERO or more variable-length parameter structures defined for that page. The Log 

Select command supports the ability to send ZERO or more log pages. The LOG SENSE command returns a single 
log page as specified in the Page Code field of the CDB.