Recently I have been involved in some discussions about what constitutes an
SBP-2 Target; these discussions have pointed out some areas of the SBP-2
spec that are kind of fuzzy. I'm posting this question to get an idea of
how this issue is viewed by the rest of the industry.
18.104.22.168 target: A node that receives device service or management requests
from an initiator....
This has been interpreted to mean that there is only one SBP-2 target per
4.1 Unit Architecture
In CSR architecture and Serial Bus terminology, targets implemented to this
standard are units. A Serial Bus node that implements a target has a unit
directory in configuration ROM that identifies the presence and capabilities
of the target.
This implies that each SBP-2 unit directory is a separate target.
The case not covered by the SBP-2 specification is the one where there are
multiple instance directories each containing an SBP-2 unit directory. Is
this one target or multiple targets? I have been assuming that this
represents multiple targets; are my assumptions correct?
Hewlett Packard Company
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