IBM SAN Volume Controller 2145-CG8 Hardware Maintenance Manual page 238

DANGER
| Multiple power cords. The product might be equipped with multiple power cords. To remove all
hazardous voltages, disconnect all power cords. (L003)
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This service action requires you to remove the cover and:
v Turn off the node.
v Disconnect the power cables.
v Disconnect the service-controller USB cable, the SAS boot-disk cable, and the SAS cable to disk bays 0,
1, 2, and 3, if the cable is still installed.
To remove the disk-controller and USB riser-card assembly, complete the following steps:
1. Read the safety information to which "Preparing to remove and replace parts" on page 26 refers.
2. Follow the procedure in MAP 5350 in the IBM System Storage SAN Volume Controller 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.
You can perform most service actions when the node is fully extended from the rack on its slide
rails. You can leave the Fibre Channel and Ethernet cables connected, if you are using the
cable-management arm and if you are not removing the node from the rack. 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.
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 34.
5. Optional: If you must remove the node from the rack to work on it, perform the following procedure
to remove all cables and remove the node from the rack:
a. 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.
b. 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 46.
6. Remove the top cover. See "Removing the top cover" on page 77.
7. Remove the USB service-controller cable from the USB connection ( 1 in Figure 204 on page 209) on
the disk-controller and USB riser-card assembly ( 3 ), as described in "Removing and replacing the
SAN Volume Controller 2145-CG8 or 2145-CF8 service controller cable" on page 88.
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IBM SAN Volume Controller Hardware Maintenance Guide
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