Usb Riser-Card Assembly For The San Volume - IBM SAN Volume Controller Hardware Maintenance Manual

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.
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 29.
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 40.
6.
7. Remove the USB service-controller cable from the USB connection ( 1 in Figure 198) on the
disk-controller and USB riser-card assembly ( 3 ), as described in "Removing and replacing the SAN
Volume Controller 2145-CF8 service controller cable" on page 78.
1 2
Figure 198. USB riser-card assembly for the SAN Volume Controller 2145-CF8
1 USB connector
2 Disk-controller connector
3 USB riser-card assembly (shown without the disk controller)
8. Remove the SAS cable that runs to the boot-drive-bay connector on the left side of the back of the
disk backplane, when viewed from the rear, from the connector on the disk-controller and USB
riser-card assembly that is closer to the power supply.
9. If present, remove the SAS cable that runs to disk-drive-bay connector in the center of the back of
the disk backplane, when viewed from the rear, from the connector on the disk-controller and USB
riser-card assembly that is closer to the front of the node.
10. Grasp the disk controller near the end next to the power-supply cage while you press the black
plastic tab (next to the power supply) toward the power supply.
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