Datasheet

Fibre Channel Interface
1-24 C141-C008
1.4 Drive Operation on the Loop
This section describes the following as the operations which the drive is required
to perform at FC level:
• Loop initialization
• Arbitration
• Communication between the initiator and target
1.4.1 Loop initialization
(1) Process Outline
Loop Initialization is a process for the purpose listed below.
• To obtain Arbitrated Loop Physical Address (AL_PA) because the drive has
no valid address when powered on.
• To indicate the error on the loop to the other NL_ports.
• To reset particular drive by the initiator.
And the trigger to start Loop Initialization is called LIP.
Loop Initialization is occurred as follows.
a) The drive is powered on.
b) The drive (or all NL_Ports if powered on simultaneously) requests to
start Loop Initialization.
; see 1.4.1(3) (LIP)
c) Select loop master (responsible for processing Loop Initialization)
; see 1.4.1(4) (LISM)
d) Each NL_ports on the loop starts the process for obtaining AL_PA.
; see 1.4.1(5) (LIFA/LIPA/LIHA/LISA)
e) Each NL_Ports obtains unique AL_PA and Loop Initialization is terminated.