Sun Microsystems StorageTek 6540, Support Manual

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Chapter 2 Cabinet and Environmental Specifications 11
Weight
The weight of a fully loaded cabinet can vary well above 545 kg (1200 lbs), especially
when adding newer disk drive trays and disk controller trays to existing equipment.
It is the responsibility of the customer to ensure that the infrastructure (sub-floor) is
capable of supporting a fully loaded cabinet. The cabinet must be able to properly
support the specified weight of all of the equipment installed in the rack.
Caution – Make sure to prevent an unbalanced condition that could cause the
cabinet to become unstable and tip over. Always install heaviest devices at the
bottom of the cabinet, and graduate to the lightest component on top.
When reconfiguring the equipment in a cabinet, always remove equipment installed
in the top of the cabinet first. Removal of equipment (starting from the top) should
always involve two or more people, and whenever possible, use a mechanical lifting
device to lift or lower equipment. Always place the heaviest devices in the bottom of
the cabinet first.
Always follow the manufacturer’s guidelines for positioning, supporting or
fastening any equipment in the cabinet.
If the cabinet will be moved, make sure that the cabinet’s center-of-gravity is at a
safe transport level while moving. This usually requires that:
O
no front-heavy trays are installed above 28U
O
no empty spaces exist in the lowest portion of the cabinet
O
no more than a 10 degree ramp is to be used when transporting the cabinet.
The total weight of a populated cabinet depends on the number and type of trays
installed in the cabinet. Chapter three lists the weight of a typical empty cabinet and
the maximum weight of each component. Use these weights to estimate the total
weight of your system, based on the number of trays installed in the cabinet. Record
the total weight in an easy-to-find place to reference when checking floor load or
elevator weight restrictions.