For Detailed Information About Rail Dimensions, See The; Table 23. Supported Rack Rail System; Figure 15. Static Rails - Dell PowerEdge R720 Technical Manual

The static rails (shown in Figure 15) support a wider variety of racks than the sliding rails, but do not
support serviceability in the rack and 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 23 lists the rack rail systems that the R720 and R720xd support.
Rail
System
identifier
B6
R720/R720xd
B4

For detailed information about rail dimensions, see the

Rack rail specifications section in Appendix A. For more information on installing the T620 in a rack,
Rack Installation Instructions
see the
PowerEdge R720 and R720xd Technical Guide
44

Figure 15. Static rails

Table 23. Supported rack rail system
Mounting interface
ReadyRails II
ReadyRails
on Dell.com/Support/Manuals.
Rack types supported
Rail
4-post
type
Square Round
 
Sliding
 
Static
2-post
Thread Flush Center
X X

  