SGI Origin 3900 Specifications download pdf (Page 18)

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2: Site Preparation Concepts

• Is the ﬂoor strong enough to support the weight of the system?

The rack loaded with bricks can be very heavy. Determine the weight of each rack

and verify that the ﬂoor along the delivery route can handle the weight. Refer to

Table 5-1 for the maximum weight per system rack.

• Is the elevator capable of lifting the system?

If the intended delivery route includes an elevator, check its weight capacity and

size against the system speciﬁcations listed in Table 5-1. The use of freight blankets

can reduce damage to the elevator or the system.

• Are there any steep angles, bumps, changes in level, or thick carpeting along the

delivery route?

Large systems are typically equipped with casters. However, the casters are

designed to roll easily only on relatively smooth, level surfaces. Ramps, sliding

door channels, rough ﬂooring, and even thick carpeting may present difﬁculty. If in

doubt, arrange for additional assistance. The maximum access incline should not

exceed 10 degrees (height:length = 1:6).

• Did you ensure that the leveling pads are fully retracted?

Some systems have screw-in leveling pads. If you move the system with these feet

extended, severe damage to the chassis can occur. These feet sometimes unscrew

during shipment. Before you unpack or move a system, ensure that the leveling

pads are fully retracted. Refer to Figure 6-3 for leveling pad locations.

Selecting a Final Location

Consider the following issues when you select a ﬁnal location for the system:

• Will the system ﬁt in its intended location?

Carefully calculate the total system dimensions to ensure that it will ﬁt in its

intended ﬁnal location.

• Does the intended system location provide adequate access space for maintenance?

Even if the system will ﬁt in its intended ﬁnal location, you must have room to

maintain it. Ensure that you will have enough room to open the doors, remove

boards, and accomplish other routine tasks. Table 5-1 lists the relevant system

dimensions and access requirements.

• Is the intended location subject to ﬂooding, extremes of humidity or temperature, or

any other factor that would make it inappropriate for sensitive electronic

equipment?

The air temperature should not be too high and should not ﬂuctuate dramatically,

air should circulate freely and be relatively dust-free, and the system should not be

exposed to any caustic or corrosive chemicals or vapors. Refer to Table 6-1 for

system-speciﬁc requirements.

• Will the system interfere with normal trafﬁc through aisles, hallways, or entrance

ways in the intended location?

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SGI Origin 3900 Specifications Page 18