Dell R210 II Specifications Page 48

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Dell PowerEdge R210 II Technical Guide 48
14 Rack Information
14.1 Overview
The ReadyRails™ static rail systems for the R210 II provide tool-less support for racks with square or
unthreaded round mounting holes including all generations of Dell racks. The rail systems also offer
tooled mounting support for 4-post threaded and 2-post (Telco) racks for added versatility. See Table
16 for the list of supported rails and racks.
14.2 Rails
Two different static rail systems are available for the R210 II: the A4 rail system and the A6 rail
system. Both support tool-less mounting in 19-wide, EIA-310-E compliant square hole and
unthreaded round hole racks using the ReadyRails™ mounting interface. Both also support a generic
mounting interface for tooled mounting in threaded hole and 2-post (Telco) racks. Screws are not
included in either kit because threaded racks are offered with a variety of thread designations.
Table 16. Supported Racks
Product
Rail
ID
Mounting Interface
Rail
Type
Rack Types Supported
4-Post
2-Post
Square
Round
Thread
Flush
Center
R210 II
A4
ReadyRails/Generic
Static
A6
ReadyRails/Generic
Static
The A6 rail system also supports a cantilever (ear) mounting option, although it is not recommended
since it does not support shipment of the server in the rack and allows the position of the server to
exceed its designated U-space.
The key difference between the A4 and A6 rail systems is the overall length of the rail members. The
A6 rail system, which is the default rail system being offered with the R210 II, is the shorter of the
two and is well suited for mounting in 2-post racks or in 4-post racks with mounting flanges that are
spaced in the 500-760 mm range. The A4 rail system is longer and can be used for mounting in 4-post
racks with mounting flanges that are spaced in the 600-890 mm range. See Table 17 for specific
adjustment range information on each rail system.
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