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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.
Table 12-1
Bit
Byte
7 6 5 4 3 2 1 0
0 OPERATION CODE ( 1Bh)
1 Reserved IMMED
2 Reserved
3 Reserved
4 Reserved HOLD EOT RETEN LOAD
5 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.
12.5. NEW COMMANDS
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
Attribute
Type
Attribute Source Example Readable with
READ
ATTRIBUTE
Writeable
with WRITE
ATTRIBUTE
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