IBM FAStT500 User Guide - Page 71

GBICs, Servicing notes

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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. Chapter 3. Replacing controller unit components 51

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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.