Multiple Initiator Environment; Initiator Sense Data; Initiator Mode Select/Mode Sense Parameters; Initiator Data Transfer Mode Parameter - IBM IC35L036UWDY10 - Ultrastar 36.7 GB Hard Drive Specifications

11.14 Multiple Initiator Environment

11.14.1 Initiator Sense Data

Separate sense data is reserved for each I_T_L nexus and I_T_L_Q nexus. Each sense data is main-
tained independent of commands from other initiators.

11.14.2 Initiator Mode Select/Mode Sense Parameters

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

11.14.3 Initiator Data Transfer Mode Parameter

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

11.15 Contingent Allegiance Condition

The contingent allegiance condition shall exist following the return of CHECK CONDITION, except for a
CHECK CONDITION caused by Invalid LUN. Execution of all queued commands shall be suspended until
the contingent allegiance condition is cleared.
The contingent allegiance condition can be cleared by the initiator in one of the following ways:
! By issuing a REQUEST SENSE command to the Target and receiving the sense data. This is
the recommended way.
! By issuing any other command to the I_T_L nexus or I_T_L_Q nexus that reported the fault.
! By issuing an ABORT TASK SET message to the I_T_L nexus or I_T_L_Q nexus that reported
the fault. This will also abort the current and queued I/O process from that initiator.
! By issuing a TARGET RESET message to the Target. This will also abort all current and queued
I/O processes.
! By generating a RESET condition on the bus. THIS MUST BE THE LAST RESORT.
By issuing a PERSISTENT RESERVE OUT command with Preempt and Clear service action,
Contingent Allegiance Condition for the preempted initiator is cleared..
Ultrastar 146Z10 hard disk drive specifications
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