Table of Contents
Advertisement
11.3
Drive mounting
Mount the drive using the bottom or side mounting holes. If mounting 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.
11.4
Grounding
Signal ground (PCBA) and case 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 drive with no electrically isolat-
ing shock mounts. If it is desired for the system chassis to not be connected to the drive 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 designers do not provide the maximum surface area ground con-
nection between system ground and drive ground. This is the system designer's and integrator's responsibility.
50
K x X = F < 15lb = 67N
Pulsar.2 SAS Product Manual, Rev. B
Advertisement
Table of Contents
