Communicator e3000 MPE/iX Release 7.5 (Software Release C.75.00) (30216-90336)

Chapter 4
Fibre Channel Device and Adapter Support on HP e 3000 Systems
FCSCAN — Fibre Channel Device Scan Utility
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that this option prints only the N_Port paths and not the paths of individual LUNs under the N_Ports. By
looking at this simplified output format, the System Administrator can quickly identify what FC devices are
connected to the FC cards in the system.
FCSCAN Output with “-h” Option
FCSCAN normally uses the internal I/O subsystem data structures of MPE/iX Operating System to get the
list of FC cards and devices on the system. So this information reflects only what is currently known to the OS
and may or may not actually match with the FC devices currently connected to the card. This is because FC
physical interface allows devices to be connected while the interface is online. For example, when the system
is up and running, it is possible to connect a new FC device to the system.
The option “-h” specifies FCSCAN to actually perform a hardware scan of the current state of devices
connected to the FC cards, before printing out the list. Using the “-h” option guarantees that the list of devices
printed more accurately matches what is currently connected on the system. This option is helpful for the
case where the System Administrator connects a new FC device while the system is up and wants to know the
hardware path of the device for configuring it.
Since the “-h” option involves an actual hardware scan of the FC devices, FCSCAN utility will take some extra
time to print the output when this option is used.
:fcscan -h
Scanning for Fibre Channel devices. Please wait ...
FCSCAN has found the following Fibre Channel I/O Adapter Cards and Devices on this system.
SYSGEN PATH DESCRIPTION BOOT MENU PATH
============= ============= ================
0/2/0/0 Fibre Channel Adapter
0/2/0/0.95 Fibre Channel N_Port
0/2/0/0.95.1 HP A6188A disk 0/2/0/0.8.0.95.0.0.1
0/2/0/0.95.5 HP A6188A disk 0/2/0/0.8.0.95.0.0.5
0/2/0/0.95.10 HP A6188A disk 0/2/0/0.8.0.95.0.1.2
0/8/0/0 Fibre Channel Adapter
0/8/0/0.24 Fibre Channel N-Port
0/8/0/0.24.0 SEAGATE ST39103FC disk 0/8/0/0.8.0.255.1.8.0
0/8/0/0.25 Fibre Channel N-Port
0/8/0/0.25.0 SEAGATE ST39103FC disk 0/8/0/0.8.0.255.1.9.0
0/8/0/0.26 Fibre Channel N-Port
0/8/0/0.26.0 SEAGATE ST39103FC disk 0/8/0/0.8.0.255.1.10.0
0/8/0/0.27 Fibre Channel N-Port
0/8/0/0.27.0 SEAGATE ST39103FC disk 0/8/0/0.8.0.255.1.11.0
The output shown above is after an actual hardware scan of the FC devices currently connected. Comparing
this with the earlier default output (without any options), we can see that now a new FC device N_Port 95 is
being shown under the FC card 0/2/0/0. This N_Port has three disk LUNs 1, 5 and 10 under it, referred to as
HP A6188A disk. It is possible that the device was connected after the system booted up. So when FCSCAN