IBM TotalStorageFAStT900, User Manual

Page: 85 / 112

4. Loosen the captive screw on the mini hub. Then grasp the screw and remove
the mini hub from the chassis, as shown in Figure 51.
Attention: When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling static-sensitive
devices, see “Handling static-sensitive devices” on page 37.
5. Unpack the new mini hub and slide it into the appropriate slot. Then tighten the
captive screw.
6. Install the SFP modules that you removed in Step 3a on page 55 as follows:
a. Remove the SFP modules from their static-protective packages.
b. Remove the protective caps from the SFP modules.
c. Slide the SFP modules into the mini-hub ports.
7. Replace the fiber-optic cables that you removed in Step 1 on page 57.
8. Check the indicator lights on the mini hub.
When the mini hub is operating properly, the green loop good light is lit and the
fault light is off. If the mini-hub port is active, the amber port bypass light is not
lit. For more information see “Mini-hub indicator lights” on page 26. If a problem
is indicated, use the storage-management software to check the FAStT900
Storage Server status.
Figure 51. Removing and installing a mini hub
Chapter 3. Replacing the FAStT900 Storage Server components
59