HP StorageWorks 1606 HP StorageWorks 8GB SAN Switch hardware reference guide ( - Page 91

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

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Port speed Cable size nl (microns) 62.5 9 Short wavelength 300 m (984 ft) N/A Long wavelength N/A 4 km (2.48 miles) FCoE Converged Network Switch data flow latency Table 30 describes the data flow latency for the FCoE Converged Network Switch. Table 30 Data flow latency for the FCoE Converged Network Switch Data flow latency type FC port to FC port CEE port to CEE port (same ASIC) CEE port to CEE port (different ASIC) FCoE to FC Size in nanoseconds +/- 700 ns 570 ns 1,050 ns 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 performs the following tasks: • Conducts preliminary POST diagnostics • Initializes the operating system • Initializes the hardware • Runs diagnostic tests on several functions, including circuitry, port functionality, memory, statistics counters, and serialization 8-Gb SAN Switch Hardware Reference Guide 91

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Long wavelength
Short wavelength
Cable size
nl
(microns)
Port speed
N/A
300 m (984 ft)
62.5
4 km (2.48 miles)
N/A
9
FCoE Converged Network Switch data flow latency
Table 30
describes the data flow latency for the FCoE Converged Network Switch.
Table 30 Data flow latency for the FCoE Converged Network Switch
Size in nanoseconds
Data flow latency type
+/
–
700 ns
FC port to FC port
570 ns
CEE port to CEE port (same ASIC)
1,050 ns
CEE port to CEE port (different 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 performs the following tasks:
•
Conducts preliminary POST diagnostics
•
Initializes the operating system
•
Initializes the hardware
•
Runs diagnostic tests on several functions, including circuitry, port functionality, memory, statistics
counters, and serialization
8-Gb SAN Switch Hardware Reference Guide
91