Sony SDX-800V/R manual AIT Log Page Sony Unique, AIT Log Bit Byte Code 3Ch Reserved, Length n+1

6.Command Specification LOG SENSE

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	7	6	5	4		3	2	1	0
Byte
0				Page Code (3Ch)
1					Reserved
2	(MSB)			Page Length (n+1)
3									(LSB)

	Bit	7	6	5	4		3			2	1	0
	Byte
	0	(MSB)		Parameter Code (0001h - 0012h and 0101h - 0112h)
	1											(LSB)
	2	DU (0)	DS (1)	TSD (0)		ET (0)			TMC (00)		LBIN (0)	LP (0)
	3					Parameter		Length (n-3)
	4	(MSB)				Parameter Value
	N											(LSB)
Parameter Code:

Code	Description	Length
0001h	Current Groups Written	8
0002h	Current Rewritten Tracks	8
0003h	Current Groups Read	8
0004h	Current C3 ECC Count	8
0005h	Previous Groups Written	8
0006h	Previous Rewritten Tracks	8
0007h	Previous Groups Read	8
0008h	Previous C3 ECC Count	8
0009h	Total Groups Written	8
000Ah	Total Rewritten Tracks	8
000Bh	Total Groups Read	8
000Ch	Total C3 ECC Count	8
000Dh	Load Count	4
000Eh	Access Count	4
000Fh	Update Replace Count	8
0010h	Last Valid Absolute Frame Number	8
0011h	Partition Attribute	8
0012h	Maximum Absolute Frame Number	8

6-30 SONY AIT-3Ex drive SDX-800V series Ver.1.1