IBM Storwize V7000 Unified Quick Installation Manual page 7

CAUTION:
Do not place any object on top of a rack-mounted device unless that
rack-mounted device is intended for use as a shelf. (R008)
CAUTION:
If the rack is designed to be coupled to another rack only the same model rack
should be coupled together with another same model rack. (R009)
Danger notices for Storwize V7000 Unified
Ensure that you are familiar with the danger notices for Storwize V7000 Unified.
Use the reference numbers in parentheses at the end of each notice, such as (C003)
for example, to find the matching translated notice in IBM Systems Safety Notices.
vii
Safety and environmental notices