Selection Without Atn; Multiple Initiator Environment; Initiator Sense Data; Initiator Mode Select/Mode Sense Parameters - IBM DCAS-32160 - Ultrastar 2.1 GB Hard Drive Specifications

11.14 Selection without ATN

If the target is selected without ATN signal active, no Identify message is received from the initiator. In this
case, the L U N is identified from the CDB and disconnect permission is disabled. The target does not
perform any phase retries. The target still responds to a subsequent attention condition. However, the L U N
is not considered to be known if a fatal error is detected during the Command phase. That is a Command
phase parity error or a fatal message error in response to attention condition during Command phase is
handled as a Bus Free error with no sense data. The target also knows the use of linked commands if
selected without ATN.
Phase retries may be allowed if a subsequent Identify message is received.

11.15 Multiple Initiator Environment

11.15.1 Initiator Sense Data

Separate sense data is reserved for each I-T-L. Each sense data is maintained independent of commands
from other initiators.

11.15.2 Initiator Mode Select/Mode Sense Parameters

A single shared copy of the Mode Select/Mode Sense parameters is maintained by the file. This includes
both the current and saved parameters.

11.15.3 Initiator Data Transfer Mode Parameter

A separate data transfer mode parameters area is reserved and maintained for each initiator.
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