Sony SDX-800V/R User Manual

12. Appendix E 
 

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

 

12-2 

Note:  The above information has been taken from an unofficial version of the SCSI-3 Stream 

Commands. In case of any conflict, the published ANSI standard prevails

. 

OPERATION CODE ( 1Bh) 

Reserved IMMED 

Reserved 

Reserved 

Reserved HOLD 

EOT 

RETEN 

LOAD 

CONTROL 

Note: For non-memory component media, the device firmware ignores the above command and 

threads the tape in order to provide the required data.

 

A MAM attribute is represented in a format described in the next section and is composed of: 

 

1.  An attribute identifier, 
2.  An attribute format code, 

3.  A bit indicating whether the identified attribute is read only, 

4.  An attribute length specifying the number of bytes in the identified attribute value, and 

5.  The value of the identified attribute. 

 

There are three types of attribute (table 12-2) 

Table 12-2: Types of MAM Attributes 

Medium 

Permanently stored in the 

medium auxiliary memory 
during manufacture. 

Media 

Serial 
Number 

Yes No 

Device 

Maintained by the 

device server 

Load 

Count 

Yes No 

Host 

Maintained by the 

application client. 

Backup 

date 

Yes Yes 

 
Depending on that attribute type, attributes have the states shown in table 12-3