24
Installing the DXi6902 System in the Rack
DXi6902 Installation and Configuration Guide
Locating the Mounting
Position
The DXi6902 system is designed to fit in a standard 19 inch (48.3 cm) wide rack. It is
important for the chassis installation to locate the hole pattern in the rack rails. You
must allow 2U (3.4 inches or 8.7 cm) of vertical space for the DXi6902 Node and an
addition 2U for each Array module (RBOD) and Expansion module (EBOD) installed in
the rack.
Rack cabinets that meet EIA-310 standards have an alternating pattern of three holes
per rack unit with center-to-center hole spacing (beginning at the top hole of a 1U
space) of 15.9 mm, 15.9 mm, and 12.7 mm (0.625 inch, 0.625 inch, and 0.5 inch) for
the front and back vertical rails (see
). Rack cabinets may have round or square
holes. For more information, refer to the
DXi6902 Site Planning Guide
(6-68161).
Figure 17 Rail Hole Pattern
WARNING:
If the rack is empty at the time of installation, do NOT install the DXi6902
chassis too high in the rack. The weight of the chassis may cause the rack
to become “top heavy” and unstable if installed in the top of an empty
rack.
To mark the rack, place a mark (or tape) on the rack’s front vertical rails where you want
to locate the bottom of the unit you are installing in the rack. The bottom of each 1U
space is at the middle of the narrowest metal strip between holes (marked with a
horizontal line on some rack cabinets).
Installing the DXi6902
Array Module or
Expansion Module
Installing the DXi6902 Array or Expansion Module Rack Mounting Rails
1
Position the left and right rail end pieces labeled
FRONT
facing inward, and orient
each end piece to seat in the holes on the front side of the vertical rack flanges (see
).
2
Align each back end piece in the bottom and top holes of the desired U spaces.
3
Engage the back end of the rail until it fully seats on the vertical rack flange and the
latch clicks into place. Repeat these actions to position and seat the front end piece
on the vertical rack flange.
Removing the Rails
If you need to remove the rails, pull on the blue release latch on each end piece and
unseat the rail from the rack.
1U (44 mm [1.75 inches])
12.7 mm (0.5 inch)
15.9 mm (0.625 inch)
15.9 mm (0.625 inch)
12.7 mm (0.5 inch)
Narrowest
metal strip