IBM Power775 Service Procedure page 36

Power775 Disk Enclosure Chassis Service Procedure
Figure 21 Disk Enclosure DCCA Power Cables (HPIC)
STEP 28 Identify the SAS cables that need to be disconnected and disconnect them.
The SAS cables connect to Port Card in the front and rear of the DE. All cables should be labeled
to help when re-cabling the DE. Find the SAS cables that connect the DE to CECs. If any of
these cables are not labeled, label them now. Disconnect these cables from the DE. There will
be up to 32 such cables (see Figure 22). You may have to remove some of the velcro ties in order
to disconnect the cables.
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