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SEAGATE ENTERPRISE PERFORMANCE 10K HDD V7 PRODUCT MANUAL, REV. C 36
If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 9. 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 9. Air flow
Note. Image of the HDA may not represent actual product, for reference only.
10.3 DRIVE MOUNTING
Mount the drive using the bottom or side mounting holes. If mounting the drive using the bottom holes, ensure to 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.
10.4 GROUNDING
Signal ground (PCBA) and HDA ground are connected together in the drive and cannot be separated by the user. The
equipment in which the drive is mounted is connected directly to the HDA and PCBA with no electrically isolating shock
mounts. If it is desired for the system chassis to not be connected to the HDA/PCBA ground, the systems integrator or user
must provide a nonconductive (electrically isolating) method of mounting the drive in the host equipment.
Increased radiated emissions may result if maximum surface area ground connection is not provided between system
ground and drive ground. This is the system designer’s and integrator’s responsibility.
K x X = F < 15lb = 67N