IBM DS8880 Series Introduction And Planning Manual page 146

Figure 14. Top exit feature installed (cable routing and top exit locations)
Feature codes for overhead cable management (top-exit bracket):
Use this feature code to order cable management for overhead cabling (top exit
bracket) for your storage system.
Note: In addition to the top-exit bracket and top-exit power cords, one IBM
approved ladder (feature code 1101) must also be purchased for a site where the
top-exit bracket for fiber cable feature is used. The IBM approved ladder is used to
ensure safe access when your storage system is serviced with a top-exit bracket
feature installed.
Overhead cabling installation and safety requirements:
Ensure that installation and safety requirements are met before your storage
system is installed.
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Table 73. Feature codes for the overhead cable (top-exit bracket)
Feature Code
1400
2
3
Description
Top-exit bracket for fiber cable