IBM totalstorage 2109 M12 Installation And Service Manual page 74

1. Loosen the adjusting screws on the left and right mount shelf brackets to allow
2. Attach the left and right mount shelf brackets to the rails in the cabinet.
1U
Figure 22. Placement of the shelf brackets and clip nuts on the cabinet rails
44
IBM TotalStorage SAN Switch: 2109 Model M12 Installation and Service Guide
for adjustment to the cabinet depth.
Standard EIA rail spacing of holes is sets of three, separated by 5/8 in., 5/8 in.,
and 1/2 in. See Figure 22.
Distances
Between
Holes:
5/8 inch
5/8 inch
1/2 inch
5/8 inch
5/8 inch
1/2 inch
5/8 inch
5/8 inch
1/2 inch
5/8 inch
5/8 inch
Note: If you are installing a 2109 Model M12 into the bottom of the rack, go to
step 2a for the location of the rail. If you are installing a 2109 Model M12
into the top of the rack, go to step 2b for the location of the rail.
a. Locate the screws in the middle of EIA unit 5 and the bottom of EIA unit 6
for the back of the cabinet. Locate the screws in the middle of EIA unit 4,
the bottom of EIA unit 5, the middle of EIA unit 5, and the bottom of EIA unit
6 for the front of the cabinet.
b. Locate the screws in the middle of EIA unit 22 and the bottom of EIA unit 23
for the back of the cabinet. Locate the screws in the middle of EIA unit 21,
the bottom of EIA unit 22, the middle of EIA unit 23, and the bottom of EIA
unit 23 for the front of the cabinet.
c. You can route the cables down through the cable management tray or
through the holes in the sides of the chassis. If you route the cables down
through the cable management tray, allow adequate space below the
chassis for cable management.
Orient the left and right mount shelf brackets with the notched portion toward
the service aisle. Attach the shelf brackets to the cabinet rails, by using six
1/4–20 x 1/2-in. Phillips panhead screws with lock washers per bracket. Tighten
the screws. See Figure 23 on page 45.
Clip
Top Screw in
Shelf Bracket
Bottom Screw in
Shelf Bracket
Bottom of
Shelf Bracket
(just below Hole 1)
Note:
Hole 1 must be the top
hole of the two holes that
are spaced 1/2 inch apart.
Hole 9
Hole 8
Hole 7
Hole 6
Hole 5
Hole 4
Hole 3
Hole 2
Hole 1
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