Sun Oracle Storage Tek T10000, Справочное руководство

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Fibre Channel Timers
44 T10000: Interface Reference Manual • January 2011 • E20425-01
Error_Detect Timeout
The Error Detect Timeout value (E_D_TOV) is the maximum time permitted
for a Sequence Initiator between the transmission of consecutive data frames
within a single sequence. This is also the minimum time that a Sequence
Recipient waits for the reception of the next frame within a single sequence
before recognizing a Sequence timeout.
E_D_TOV includes the time required to gain access to the loop in addition to
the actual frame transmission time.
Resource Allocation Timeouts
The Resource Allocation Timeout (R_A_TOV) has two components:
• Sequence Qualifiers (SEQ_QUAL) defines the minimum time that an
initiator waits before reusing the sequence qualifiers (SEQ_ID and
SEQ_CNT).
• Extended Link Services (ELS) determines the minimum time the Originator
of an extended link service request waits for the response to a request as
a target.
Resource Recovery Timeout
The Resource Recovery Timeout (RR_TOV) is the minimum time the target
waits for an initiator to perform an exchange authentication following the
completion of the loop initialization.
REC Timeout
The Read Exchange Concise Timeout value (REC_TOV) is used to time reply
sequences and a polling interval for REC error detection. Refer to FCP-2 for a
detailed description.
Upper Level Protocol Timeout
The Upper Level Protocol Timeout (ULP_TOV) is used by the initiator to time
the completion of exchanges associated with the ULP operations. The timeout
values vary depending on the operations being timed.