Table 9-8: Medium Transport Element Descriptor Fields - Spectra Logic Spectra S50 User Manual

Table 9-8: Medium Transport Element Descriptor Fields

Field Name Value Returned
Element Address Varies
0
Except
1
1
Full
0
Additional Sense
Varies
Code (ASC)
Additional Sense
Code Qualifier Varies
(ASCQ)
1
SValid
(Source Valid)
0
Invert 0
Source Storage
Varies
Element Address
Primary Volume
Varies
Tag Information
a. The library only supports the first 10 characters of a bar code. If the bar code is larger than 10 characters, only the first 10 characters will be reported.
Chapter 9. Read Element Status—B8h
Meaning
The address used to identify the medium transport element (robotic tape
picker).
Each element in the library must have a unique address. Element addresses are
used by almost all medium changer device SCSI commands to identify locations
applicable to the particular command. Each element has a factory-set default
address, but the addresses can be reassigned with the MODE SELECT command.
An Except bit value of 1 indicates that the element is in some sort of abnormal
state. More information on the nature of the exception is available in the ASC
and ASCQ fields, described below.
A value of 1 indicates that the specified element contains media.
A value of 0 indicates that the element does not contain media.
The ASC and ASCQ together may provide more information about the condition
that caused the Except bit to be set to 1.
Their meaning here is the same as the ASC and ASCQ returned to the REQUEST
SENSE command. For a listing of the meanings of all ASC-ASCQ combinations,
see Chapter 15. Error Reporting.
Indicates that the value in the Source Storage Element Address field is valid.
Indicates that the value in the Source Storage Element Address field is not valid.
This bit is always 0 because T-Series and 50-Series libraries do not invert
cartridges.
Indicates the source address of where the media was previously located.
If the PVolTag bit in the data header is 1, this field contains the bar code (volume
tag) information for the cartridge occupying this element.
a
If the PVolTag bit is 0, this field is omitted entirely. There is rarely a bar code
associated with this element type.
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