User guide

C–24 Rack information
Hitachi Unified Storage VM Block Module Hardware User Guide
To stabilize the rack, observe the following guidelines:
• Stabilize the rack frame at its final installation location by adjusting the
leveling feet.
• Using an adjustable wrench, turn each leveling foot clockwise until the
clearance between the caster and the floor is 2.5 mm. The full weight of
the rack should be resting on the leveling feet, and not on the casters.
• Adjust the leveling feet so that the tilt of the rack (forwards, backwards,
left or right) becomes 0.0 ± 2 mm.
• When extending equipment out of the rack, be sure the front stabilizer
plate is installed and extend only one item at a time. Extending two or
more items of equipment at a time may cause the rack to become
unstable and tip over.
• Front and side stabilizer plates must be installed on racks with storage
system drive boxes.
Always follow safety precautions and common sense. The following figure
shows an example of how to stabilize a rack by lowering the leveling feet.
Figure C-11: Example of Lowering the Leveling Feet