IBM Storwize V7000 Unified Problem Determination Manual page 238

Figure 42. Directions for lifting the handle on the power supply unit
Figure 43. Using the handle to remove a power supply unit
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Storwize V7000 Unified: Problem Determination Guide 2073-720
b. Grip the handle to pull the power supply out of the enclosure as shown in
Figure 43.
6. Insert the replacement power supply unit into the enclosure with the handle
pointing towards the center of the enclosure. Insert the unit in the same
orientation as the one that you removed.