IBM Netfinity FASt T500, Справочник пользователя

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Chapter 3. Replacing controller unit components 51
5 Replace the GBICs that you removed in Step 2 on page 53 .
a Remove the protective cap from the GBIC.
b If the GBIC you are installing has a metal latch, move the metal latch to the
unlocked (center) position.
c Slide the GBIC into the mini-hub port.
d Rotate the metal latch outward to the locked position (flush with the rear of the
GBIC).
6 Replace the fiber-optic cables that you removed in Step 1 on page 49 .
7 Check the indicator lights on the mini-hub.
When the mini-hub is operating properly, the green loop good light is on and the fault
light is off. If the mini-hub is connected to a Fibre Channel loop, the amber port bypass
light is off. If a problem is indicated, use the storage-management software to check
the controller unit status.
GBICs
GBICs (Gigabit Interface Converters) are used to connect mini-hub ports to attached
nodes. A GBIC slides into a mini-hub port on the back of the controller unit and then a
host- or drive-interface cable connects into the GBIC. For more information, see
"Fibre
Channel connections" on page 3 and "Mini-hubs" on page 48 .
Servicing notes
Consider the following when servicing GBICs:
• You can hot swap (replace) a failed GBIC while the controller unit is in operation.
• The operational loop performance is not affected when you install or remove a GBIC.
• Four indicator lights on a mini-hub provide status information. If a GBIC fails, the
interface fault and the bypass indicator lights on the mini-hub glow and the loop good
indicator light is off. For more information about indicator lights, see
"Checking the
indicator lights" on page 15 .
• If you replace the GBIC and still experience problems, the controller unit might have
defective components or connections. Check the storage-management software for
indications of other component failures.