SCSI Commands: 29BREAD ATTRIBUTE
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3.17.8
Attributes Supported by the drive
3.17.8.1
Device type attributes
Device type attributes are maintained and updated by the device server when the
medium and associated medium auxiliary memory are present. All supported
medium type attributes have a status of read only.
Attribute
Identifier
Name
Attribute
length
Format
0000h
REMAINING CAPACITY IN PARTITION
8
BINARY
0001h
MAXIMUM CAPACITY IN PARTITION
8
BINARY
0002h TAPEALERT
FLAGS
8 BINARY
0003h LOAD
COUNT
8 BINARY
0004h
MAM SPACE REMAINING
8
BINARY
0005h ASSIGNING
ORGANIZATION
8 ASCII
0006h
FORMATTED DENSITY CODE
1
BINARY
0007h INITIALIZATION
COUNT*
2 BINARY
0008h VOLUME
IDENTIFIER*
32
ASCII
0009h-0209h Reserved
020Ah
DEVICE MAKE/SERIAL NUMBER AT LAST LOAD
40
ASCII
020Bh
DEVICE MAKE/SERIAL NUMBER AT LOAD - 1
40
ASCII
020Ch
DEVICE MAKE/SERIAL NUMBER AT LOAD – 2
40
ASCII
020Dh
DEVICE MAKE/SERIAL NUMBER AT LOAD - 3
40
ASCII
020E-021Fh Reserved
0220h
TOTAL BYTES WRITTEN IN MEDIUM LIFE
8
BINARY
0221h
TOTAL BYTES READ IN MEDIUM LIFE
8
BINARY
0222h
TOTAL BYTES WRITTEN IN CURRENT/LAST LOAD
8
BINARY
0223h
TOTAL BYTES READ IN CURRENT/LAST LOAD
8
BINARY
0224h-033Fh Reserved
0340h
MEDIUM USAGE HISTORY
90
BINARY
0341h
PARTITION USAGE HISTORY
60
BINARY
0342h-O3FFh Reserved
* These attributes are UNSUPPORTED.
REMAINING CAPACITY IN PARTITION
(ID 0000h) and
MAXIMUM CAPACITY IN
PARTITION
(ID 0001h): Are native capacities (i.e., assuming no data compression
for the specified medium partition). These values are expressed in increments of 1
048 576 bytes (e.g., a value of one means 1 048 576 bytes and a value of two
means 2 097 152 bytes).
TAPEALERT FLAGS
(ID 0002h): Are a reporting the state of the TapeAlert flags for
the previous load of the medium. Each TapeAlert flag occupies one bit (Flag 1 =
MSB, Byte 1; Flag 64 = LSB, Byte 8). The bits specify all the TapeAlert flags that
were set during the previous load, (i.e., the bits are “sticky” for the load).
LOAD COUNT
(ID 0003h): Indicates how many times this medium has been fully
loaded. This attribute should not be reset to zero by any action of the device server.
MAM SPACE REMAINING
(ID 0004h) Indicates the space currently available in the
medium auxiliary memory. The total medium auxiliary memory capacity is reported
in the MAM CAPACITY attribute.
Summary of Contents for LTO 4
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