HP StorageWorks 8/40 HP StorageWorks 8-Gb SAN Switch hardware reference manual - Page 90

FCoE Converged Network Switch data flow latency, Fibre Channel port specifications

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FCoE Converged Network Switch data flow latency Table 29 describes the data flow latency for the FCoE Converged Network Switch. Table 29 Data flow latency for the FCoE Converged Network Switch Data flow Size in nanolatency Type seconds FC port to FC port +/- 700 ns CEE port to CEE port (same ASIC) 570 ns CEE port to CEE port (different ASIC) 91,050 ns FCoE to FC 1,670 ns Fibre Channel port specifications The Fibre Channel ports in the 8-Gb SAN Switch are compatible with SWL, LWL, and ELWL SFP transceivers. The strength of the signal is determined by the type of transceiver in use. The ports meet all required safety standards. The ports are capable of operating at 1, 2, 4, or 8 Gb/s and are able to autonegotiate to the maximum link speed. POST and boot specifications The switch performs POST by default each time it is powered on or rebooted or the system is reset. Boot time with POST is usually about 1 to 3 minutes. POST can be skipped after subsequent reboots by entering the fastBoot command. For more information about this command, see the Fabric OS Command Reference Manual. POST The success/fail results of the diagnostic tests that run during POST can be monitored through LED activity, the error log, or the CLI. POST: • Conducts preliminary POST diagnostics. • Initializes the operating system. • Initializes hardware. • Runs diagnostic tests on several functions, including circuitry, port functionality, memory, statistics counters, and serialization. 90 Technical Specifications

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FCoE Converged Network Switch data flow latency
Table 29
describes the data flow latency for the FCoE Converged Network Switch.
Table 29 Data flow latency for the FCoE Converged Network Switch
Size in nano-
seconds
Data flow
latency Type
+/
–
700 ns
FC port to FC
port
570 ns
CEE port to
CEE port
(same ASIC)
91,050 ns
CEE port to
CEE port (dif-
ferent ASIC)
1,670 ns
FCoE to FC
Fibre Channel port specifications
The Fibre Channel ports in the 8-Gb SAN Switch are compatible with SWL, LWL, and ELWL SFP
transceivers. The strength of the signal is determined by the type of transceiver in use.
The ports meet all required safety standards.
The ports are capable of operating at 1, 2, 4, or 8 Gb/s and are able to autonegotiate to the maximum
link speed.
POST and boot specifications
The switch performs POST by default each time it is powered on or rebooted or the system is reset.
Boot time with POST is usually about 1 to 3 minutes.
POST can be skipped after subsequent reboots by entering the
fastBoot
command. For more
information about this command, see the
Fabric OS Command Reference Manual
.
POST
The success/fail results of the diagnostic tests that run during POST can be monitored through LED
activity, the error log, or the CLI.
POST:
•
Conducts preliminary POST diagnostics.
•
Initializes the operating system.
•
Initializes hardware.
•
Runs diagnostic tests on several functions, including circuitry, port functionality, memory, statistics
counters, and serialization.
Technical Specifications
90