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2. Follow the procedure in MAP 5350 in the IBM System Storage SAN Volume Controller 2145
Troubleshooting Guide to verify that the node data is mirrored and synchronized, and that there are no
dependent volumes before turning off the node.
3. Slide the node out on its slide rails to the fully extended position.
4. When the node is completely turned off, remove the cable-retention brackets and disconnect the
power cables, as described in "Removing the cable-retention bracket" on page 29.
5. To make sure that you can replace all cables in the same ports from which they were removed, label
the port position of each fibre-channel and Ethernet cable; then remove all cables from the back of
the node.
6. Optional: Remove the node from the rack and place it on a flat, static-protective surface. See
"Removing the SAN Volume Controller from a rack" on page 40.
You can perform most service actions when the node is fully extended from the rack on its slide
rails. If the location of the node in the rack is too high or too low to work comfortably, you can
remove the node from the rack.
7.
8. Remove the fibre-channel adapter and riser-card assembly from slot 1. Set the adapter and riser card
aside on the static-protected surface. See "Removing the fibre-channel adapter assembly" on page
161.
9. Remove the high-speed SAS adapter and riser card assembly, if it is present, as described in
"Removing the SAN Volume Controller 2145-CF8 high-speed SAS adapter assembly" on page 172.
10. Remove the disk-controller and USB riser-card assembly, as described in "Removing the SAN
Volume Controller 2145-CF8 disk-controller and USB riser-card assembly" on page 181.
11. Remove the power supplies, as described in "Removing a SAN Volume Controller 2145-CF8 power
supply" on page 141.
12. Remove the microprocessor in slot 1, as described in "Removing the SAN Volume Controller
2145-CF8 microprocessor" on page 221; then remove the white plastic air baffles by lifting them
straight up.
13. Remove the memory modules and set them aside on a static-protective surface, as described in
"Removing the memory modules (DIMM)" on page 94.
Note: Make a note of the location of each DIMM as you remove it, so that you can later reinstall it
in the same connector.
14. Disconnect all cables from the system board. Make a list of each cable as you disconnect it; you can
then use this as a checklist when you install the new system board.
15. Remove the hot-swap fans, as described in "Removing the SAN Volume Controller 2145-CF8 fans"
on page 209.
16. Press the fan bracket release latches (one is to the left of fan 6 and one is to the right of fan 1)
inward toward the fans and rotate the fan assembly brackets up toward the front of the node.
17. Grasp the system board handle ( 1 in Figure 264 on page 242) and slide the system board away
from the back of the node. Lift the side of the system board that is nearer to the power supply units
slightly so that it disengages from the locator pin; then, slide the system board slightly toward the
left of the node, as shown in Figure 264 on page 242.
Chapter 2. Removing and replacing parts
241
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