3. Install a spring on each rail.
a) Extend the rail to its full length.
b) Push one looped end of a spring over one stud on the inside of the rail. (See Figure 36 on page
32.)
Note: Some models of rail have the studs on the outside of the rail.
c) Stretch the spring slightly and push the other looped end of the spring onto the other stud on the
inside of the rail.
Figure 36. Installing the rail spring
4. Working at the front of the rack cabinet, identify the two standard rack units (2U) of space in the rack
into which you want to install the support rails.
Figure 37 on page 33 shows two rack units with the front mounting holes identied.
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SAN Volume Controller : Model 2145-SV1 Hardware Installation Guide