Site requirements 35
Primary rack clearance notes and floor loading
The following notes apply to Figure 2 (page 32) and Figure 3 (page 33).
Note *1 (Figure 2): Clearance (a+b) depends on the floor load rating and
clearance “c”.
Required clearances for various floor load ratings are
shown below.
Provide 100 mm of clearance on both sides of the disk array when the kick
plates are to be attached after the disk array is installed. When disk arrays
of the same type are to be installed adjacent to each other, clearance
between the arrays may be 100 mm.
Figure 2 (page 32) shows cutout dimensions. Position the floor cutout in
the center of the disk array. The position may be off-center as long as the
cutout allows smooth entrance of an external cable (check the relation
between the positions of the cutout and the opening on the bottom plate of
the subsystem) and it is within the allowable range.
Additional notes:
• Decide actual clearances in consultation with the construction
specialist responsible for installation. They may vary depending on the
size and layout of the system and building conditions.
• When multiple disk arrays are arranged in a row, base your clearance
values on the requirements of the largest disk array.
• Generally, clearances (“c”) should be as large as allowable.
Table 7. Floor load rating for service clearances (single rack)
Floor
load rating
(kg/m
2
)
Required clearance (a + b) mm
Clearance (c) mm
c = 0 c = 200 c = 400 c = 600 c = 1000
500 200 100 0.00 0.00 0.00
450 300 200 100 100 0.00
400 400 300 300 200 100
350 600 500 400 400 200
300 1000 800 700 600 500
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