IBM 5U92, Руководство пользователя

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canister can communicate only with SAS port 2 on each drive. Similarly, if secondary expander module 1
is missing or is faulty, the expansion canister can communicate only with SAS port 1 on each drive.
Figure 52. Location of secondary expander modules
This task assumes that the following conditions were met:
• The top cover was removed, as described in “Removing the top cover” on page 21.
• The secondary expander module was removed, as described in “Removing a secondary expander
module ” on page 84.
Procedure
1. Slide the expansion enclosure out from the rack, as described in “Removing a 5U92 disk enclosure
from a rack” on page 69.
2. Identify the secondary expander module to be replaced; Figure 53 on page 55 shows the LEDs on
top of a secondary expander module.
Figure 53. LEDs on a secondary expander module
1 Online indicator
2 Fault indicator
3. Rotate both handles on the new secondary expander module to an open position, as shown in Figure
54 on page 56.
Chapter 3. Maintaining the system hardware 55