Configuring fibre channel ports
Setting the data transfer speed on a fibre channel port
The Storage Administrator (Provisioning) role is required to perform this task.
As system operation continues, you might notice that a large amount of data is transferred at some
ports, but a small amount of data is transferred at other ports. You can optimize system performance
on a fibre channel port by setting a faster data transfer speed on ports where a larger amount of
data is transferred, and setting a slower data transfer speed on ports where a smaller amount of
data is transferred.
NOTE:
In Fibre Channel over Ethernet (FCoE) networks, the port speed is fixed at 10 Gbps and
cannot be changed.
To set the data transfer speed on a fibre channel port:
1.
In the
Storage Systems
tree, click
Ports/Host Groups
.
2.
In the
Ports/Host Groups
window, select the
Ports
tab.
3.
Select the desired port.
4.
Click
Edit Ports
.
5.
In the
Edit Ports
window, select the
Port Speed
checkbox, then select the desired port speed.
Select the speed of the fibre channel port in the unit of Gbps (Gigabit per second). If
Auto
is
selected, the storage system automatically sets the speed to 2, 4, 8, or 16 Gbps.
CAUTION:
Observe the following cautions when setting speed on a fibre channel port:
•
If the HBAs (host bus adapters) and switches support 2 Gbps, use the fixed speed of 2
Gbps for the CHF (channel adapter for fibre channel) port speed. If they support 4, 8,
or 16 Gbps, use 4, 8, or 16 Gbps for the CHF port speed, respectively.
•
If the Auto Negotiation setting is required, some links might not be up when the server is
restarted. Check the channel lamp. If it is flashing, disconnect the cable, then reconnect
it to recover from the link-down state.
•
If the CHF port speed is set to Auto, some equipment might not be able to transfer data
at the maximum speed.
•
When you start a storage system, HBA, or switch, check the host speed appearing in the
Port list. If the transfer speed is different from the maximum speed, select the maximum
speed from the list on the right, or disconnect, then reconnect the cable.
6.
Click
Finish
.
7.
In the
Confirm
window, confirm the settings, in
Task Name
type a unique name for this task
or accept the default, then click
Apply
.
If
Go to tasks window for status
is checked, the
Tasks
window opens.
Setting the fibre channel port address
The Storage Administrator (Provisioning) role is required to perform this task.
When configuring your storage system, set addresses for fibre channel ports. When addressing
fibre channel ports, use AL-PA (arbitrated-loop physical address) or loop IDs as the addresses. See
“Addresses for fibre channel ports” (page 169)
for information about available addresses.
NOTE:
In FCoE networks, you do not need to set the address of a fibre channel port.
1.
In the
Storage Systems
tree, click
Ports/Host Groups
.
2.
In the
Ports/Host Groups
window, select the
Ports
tab.
3.
Select the desired port.
168 Managing logical volumes