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IBM System Storage DR550
11. Mark the floor around the edges of both rack-mounting plates.
12. Mark the plate bolt-down holes that are accessible through the opening in the rear of the
rack.
13. Remove the rack-mounting bolt assemblies.
14. If you are installing an ac-powered rack, remove the bottom isolator bushing from each of
the leveling feet. If you are installing a dc-powered rack the bottom isolator bushings must
remain installed in each of the leveling feet.
15. Remove the rack-mounting plates from the marked locations.
16. Loosen each of the locking screws on the casters.
17. Move the rack so that it is clear of both areas that were marked on the floor for the rack-
mounting plate locations.
18. Reposition the mounting plates within the marked areas.
19. Mark the floor at the center of all holes in both rack-mounting plates.
20. Remove the two rack-mounting plates from the marked areas.
21. Drill two clearance holes on each end of each rack-mounting plate. The drilled holes should
be approximately 1 inch deep. This will accommodate any rack-mounting bolt extending past
the rack-mounting plate when securing the rack to the rack-mounting plate.
22. For each rack-mounting plate, select at least two suitable hole locations. Select the hole
locations as close to the threaded hole areas as possible. Be sure the hole locations
selected at the rear of the rack are accessible.
23. Drill pass-through holes in the raised-floor panel. The pass-through holes allow the anchor-
bolts to be inserted into the rack-mounting plate and pass through the raised floor panel to
the concrete floor.
Note: You must use a minimum of two anchor bolts for each rack-mounting plate to securely
attach the rack-mounting plate through the raised-floor panel to the concrete floor. Because
some of the holes in each rack-mounting plate may align with concrete reinforcement rods
imbedded in the concrete, some of the rack-mounting plate holes may not be usable.
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24. Transfer the locations of the anchor bolt holes (exclude the clearance holes drilled for the
rack-mounting bolts) from the raised-floor panel to the concrete floor directly beneath, and
mark the hole locations on the concrete floor.
25. Drill holes in the concrete floor to secure the anchor bolts.
26. Position the raised-panel floor back into position over the anchor bolt holes.
27. Position the front-mounting plate within the marked area on the raised-panel floor.
28. Using your anchor bolts, secure the front rack-mounting plate on top of the raised floor and
through to the concrete floor.
29. Position the rear-mounting plate within the marked area on the raised-panel floor.
IBM Storage Systems
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Version 3.0 ------17 March 2006
1 Rack-Mounting Bolt
2 Thin Washer
3 Top Plastic Isolator Bushing
4 Thick Washer
5 Spacer
6 Jam Nut
7 Leveling Foot
8 Mounting Plate
9 Threaded Hole (Used to secure
the rack to mounting plate.)
10 Anchor Bolt Hole
11 Traced Pattern (Pattern to be
traced onto the floor using the
mounting plate as a template)
Copyright © 2006 by International Business Machines Corporation
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