IBM DS8880 Series Introduction And Planning Manual page 148

Figure 15. Cable cutouts for DS8880
2. If you install the storage system on a raised floor, use the following
Nonraised floors with overhead cable management
For the base frame, an option is available for overhead cabling by using the top
exit bracket feature, which provides many benefits for nonraised floor installations.
Unlike raised-floor cabling, the installation planning, cable length, and the
136
DS8880 Introduction and Planning Guide
Rear
1
41.91 cm
(16.5 in)
Cable Cutout
Front
measurements when you cut the floor tile for cabling:
1 Width: 41.91 cm (16.5 in.)
v
2 End of frame to edge of cable cutout: 10.0 cm (3.9 in)
v
3 Depth: 8.89 cm (3.5 in.)
v
Note: If both frames 1 and 2 use an overhead-cable management (top-exit
bracket) feature for the power cords and communication cables, the PCIe and
SPCN cables can be routed under the frame, on top of the raised floor. This is
the same routing that is used for nonraised floor installations. There is room
under the frame to coil extra cable length and prevent the need for custom
floor tile cutouts. Also, frames 3 and 4 do not need floor tile cutouts when the
top-exit bracket feature is installed, as only routing for the power cords is
needed.
2
10.0 cm
(3.9 in)
3