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Note: Avoid operating the FAStT100 with controllers of different cache sizes.
To replace a RAID controller, perform the following steps:
Figure 64. Location of SFPs and fiber-optic cables
84
IBM TotalStorage FAStT100 Storage Server: Installation, User's, and Maintenance Guide
Operating the storage server with controllers of different cache size will
disable caching and might adversely affect performance.
1. Check the Storage Manager client for instructions on RAID controller
failure-recovery procedures. Follow the steps provided in the software
documentation before continuing with step 2.
2. Label each cable that connects to the RAID controller that has failed. This
ensures that all cables will be properly reconnected to the new RAID controller.
Attention:
Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. When working with
fiber-optic cables, do not pinch them, step on them, or locate them in aisles or
walkways. Do not overtighten the cable straps or bend the cables to a radius
smaller than 38 mm (1.5 in.).
3. From the RAID controller that has failed, remove the fibre-channel cables from
the SFPs. The location of these components is shown in Figure 64.
RAID controller
Fiber-optic
cable
After removing the fibre-channel cables, insert the protective caps.
4. Use the following procedure to remove the SFPs from the RAID controller that
has failed.
a. Remove the LC-LC fibre-channel cable from the SFP module. For more
information, see "Handling fiber-optic cables" on page 39.
b. Unlock the SFP module latch:
v For SFP modules that contain plastic tabs, unlock the SFP module latch
by pulling the plastic tab outward 10°, as shown in Figure 65 on page
85.
SFP module
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