IBM DS3500 Installation, User & Maintenance Manual page 16

Important:
DANGER
(L001)
xiv
System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide
Each caution and danger statement in this document is labeled with a
number. This number is used to cross reference the English-language
caution or danger statement with translated versions of the caution or
danger statement in the IBM Systems Safety Notices document.
For example, if a caution statement is labeled "D005a," translations for
that caution statement are in the IBM Systems Safety Notices
document under "D005a."
Be sure to read all caution and danger statements in this document
before you perform the procedures. Read any additional safety
information that comes with the server or optional device before you
install the device.
Hazardous voltage, current, or energy levels are present inside any
component that has this label attached. Do not open any cover or barrier
that contains this label.