Bit 7 6 5 4 3 2 1 0
Byte
11 Reserved
12 Additional Sense Code
13 Additional Sense Code Qualifier
14 -
16
Reserved
17 SValid Invert Reserved ED Medium Type
18 -
19
Source Storage Element Address
20 -
55
Primary Volume Tag Information
(field omitted if PVolTag = 0)
56 -
59
Reserved
(field moved up if Primary Volume Tag Information field is omitted)
Field descriptions:
PVolTag:
Primary Volume Tag. When set this flag indicates valid information in the Primary Volume Tag
Information field. This flag will be set when the VolTag field was set in the CDB.
AVolTag:
Alternate Volume Tag. Always set to 0.
Storage Element Address:
This field provides the address of the Storage Element of this changer device whose status is
reported by this element descriptor block.
Access:
When set to 1 this field indicates that access to the storage element by a medium transport
element is allowed. If 0, indicates access to the storage element by a medium transport element is
denied.
Except:
Exception. An exception bit of 0 indicates the element is in a normal state. If this bit is 1,
information on the abnormal state may be available in the Additional Sense Code and Additional
Sense Code Qualifier fields.
Full: A full bit value of one indicates that the storage element of the changer device contains a tape
cartridge. A value of 0 indicates the storage address element is empty.
Additional Sense Code:
This field may provide specific information about an abnormal storage element state.
Additional Sense Code Qualifier:
This field may provide more detail about an abnormal storage element state.
SValid:
Source Valid. When set to 1, indicates that the Source Storage Element Address field and the
Invert bit information fields are valid. When 0, indicates that the values in these fields are not valid.
Invert:
The library uses singe sided media and does not support inverting of the media. The value
reported for this field is 0.
3-58 TL2000 and TL4000 SCSI Reference
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