User guide

C–14 Rack information
Hitachi Unified Storage VM Block Module Hardware User Guide
• Do not do anything that creates a potential hazard to people or that
makes the equipment or rack unsafe.
• Mount the storage system starting from the bottom of the rack. If the
rack will be partially filled, mount the heaviest component at the bottom
of the rack. If the storage system is mounted only near the top of the
rack, the rack may become unstable and fall
• Adjust the position of the storage system components so that they are
mounted horizontally in the center of the rack frame. Shift the storage
system onto the rails in the rack frame. When shifting the storage
system, push it in to the end gently.
• The Hitachi rack is equipped with wheels for moving. Use enough
personnel when moving the cabinet, especially on sloping loading docks
and ramps to raised computer room floors. Move the cabinet slowly and
deliberately. Be sure the floor is free from foreign objects and cables that
the cabinet could roll over.
Electrical and environmental requirements
The following are basic data center requirements for installing and operating
a Hitachi Unified Storage VMstorage system in a Hitachi rack. Detailed
specifications and requirements are listed in Specifications on page A-1.
• The AC supply circuit for rack-mounted equipment must supply the total
current specified on all the labels of the rack-mounted equipment and as
specified in this guide.
• All AC power supply connections to the rack must be properly grounded.
To ensure the integrity of the ground connection, special attention must
be given to connections that are not directly connected to the branch
circuit (for example, power strips).
• The operating ambient temperature of rack-mounted equipment must
not exceed the maximum rated ambient temperature indicated in this
guide.
• Air flow clearances specified in this guide must be maintained within the
rack.
Installation safety
• When power is fed from a wall or floor outlet, unplug the power supply
cord, or turn off the switch on the power distribution panel or board.
• Attach a notice on the panel or board prohibiting the use of the switch.
If the rack-mounted components have already had their power turned
off, be sure these conditions are satisfied.
• Do not touch any uninsulated conductor or surface which may remain
charged for a limited time after the external power supply to a rack-
mounted component is disconnected.
• If working on a rack-mounted component that has a grounding terminal,
be sure the terminal is properly connected to the facility’s ground.