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CONSTELLATION ES.3 SAS PRODUCT MANUAL, REV. B 46
If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 18. The air-flow patterns are created by one or
more fans, either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are
acceptable as long as the temperature measurement guidelines of Section 6.5.1 are met.
Figure 18. Air flow
10.3 DRIVE MOUNTING
Breather Hole
Do Not
Cover
Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure that you do not
physically distort the drive by attempting to mount it on a stiff, non-flat surface.
The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). The following equation and paragraph define the allowable mounting
surface stiffness:
where K is the mounting surface stiffness (units in lb/in or N/mm) and X is the out-of-plane surface distortion (units in inches or
millimeters). The out-of-plane distortion (X) is determined by defining a plane with three of the four mounting points fixed and
evaluating the out-of-plane deflection of the fourth mounting point when a known force (F) is applied to the fourth point.
Breather hole location - top cover
NOTE
Image is for reference only, may not represent actual drive.
NOTE
Do not cover breather hole on top cover.
Ab
ote Al b
b
Ab
ote Al
KxX=F< 15lb = 67N