An unsecured storage unit or expansion unit can topple or be
thrown around during an earthquake. This places both the unit and your personnel
in danger. To help prevent damage, restrain your storage unit using one of
the following two methods:
- Restraint method
- Allows some system movement and provides for both personnel safety and
protection of your storage unit.
- Hard mounting
- Physically attaches your system to the floor. This method increases the
safety of personnel during an earthquake. However, it also causes the most
damage to the storage unit because the unit absorbs most of the shock. IBM
does not support hard mounting.