Read Element Status
Julyl 2017 Command Set 185
Byte Count of Descriptor
Data Available
This field indicates the total number of bytes of element descriptor data
available for the elements of this element type that meet the requirements
of the Read Element Status command. This count does not include the
Element Status Page header bytes.
This value is not adjusted to match the allocation length.
Element Descriptors
The following sections contain the field definitions for the four types of
library elements, which are:
Medium Transport Element (the hand)
Storage Element (cartridge tape storage cells)
Import/Export Element (mailslot cells)
Data Transfer Element (tape drives)
Each element descriptor includes the element address and status flags.
Each element descriptor might also contain sense key information as well
as other information, depending on the element type.
The element descriptors for the four types of elements are similar, with the
exception of a few fields. Note: The differences in Bytes 02, 06, and 07 for
the four element descriptors.
The library does not support alternate volume tags. This information is not
included in any of the element descriptors.
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