Dell PowerEdge R810 Specifications download pdf (Page 34)

34 PowerEdge R820 Technical Guide

The static rails (shown in Figure 10) support a wider variety of racks than the sliding rails but do not

support serviceability in the rack and are therefore are not compatible with the CMA.

One key factor in selecting the proper rails is identifying the type of rack in which they will be

installed. Both the sliding rails and the static rails support tool-less mounting in 19”-wide, EIA-310-E

compliant square hole and unthreaded round hole 4-post racks. Both also support tooled

mounting in threaded hole 4-post racks, but only the static rails, as the more universal solution,

support mounting in 2-post (Telco) racks.

Table 21 lists the rack types that the R820 supports. The R820 is not compatible with any other Dell

rails or CMAs including previous generation rails.

Product

Rail

Identifier

Mounting Interface

Rail Type

Rack Types Supported

4-Post

2-Post

Square

Round

Thread

Flush

Center

R820

ReadyRails II

Sliding



ReadyRails

Static



Other key factors governing proper rail selection include the spacing between the front and rear

mounting flanges of the rack, the type and location of any equipment mounted in the back of the

rack such as power distribution units (PDUs), and the overall depth of the rack. Due to their reduced

complexity and lack of need for CMA support, the static rails offer a greater adjustability range and a

smaller overall mounting footprint than the sliding rails.

For detailed information about static and sliding rails, see the Rack rail specifications section in

Appendix A. For more information on installing the R820 in a rack, see the

Rack Installation

Instructions

on Support.Dell.com/Manuals.

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Dell PowerEdge R810 Specifications Page 34