Water Damage - Fujitsu M10 Series Installation Planning Manual

CHAPTER 8 Security Actions
Common buildings are designed pursuant to the Building Standards Law and other
relevant laws. This should keep a building free from critical damage even in a huge
earthquake. (When the seismic intensity scale is about 5)
Server systems are designed to withstand a horizontal seismic intensity of 2.5m/S
2
(8.2ft/S ). Certain devices are furnished with casters to facilitate their relocation.
These devices should be secured to the floor, walls, or elsewhere in a manner as
appropriate to protect from mechanical destruction. Depending on the type of floor on
which the server system is installed, earthquake motion could be amplified to a level
several times higher than the ground motion. Hence, earthquake control should be
matched to the earthquake motion conditions of the floor on which the server system
is erected. For detail of an earthquake preparedness, consult with the construction
department of Fujitsu.
8.2.3

Water damage

Water damage to server systems, power supplies, and air conditioners often results
from leaks. The performance of the server system could be impaired by the entry of
rainwater through the rooftop, outside walls, windows and other locations, water
leaking from supply/drainage pipes in the ceiling, or defective facilities that use water
on the floors above.
Safeguards generally available against these threats are described below:
(1) Asphalt waterproofing
Form a waterproof layer through combined bonding of asphalt and roofing to seal any
defects in the waterproofing of the rooftop or the floor above. The rooftop requires the
most meticulous waterproofing, particularly when a computer room is located on the
uppermost floor of the building.
(2) Window structures
Openings around windows could allow the entry of rainwater or cause damage to
glass panes during strong wind or rainfall. It is best if the computer room has no
windows. If this is not possible, build the computer room airtight with reinforced
glass or double-pane windows if possible, and include a shutter that can be closed
during strong wind or rainfall.
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