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PowerEdge R210 II Technical Guide
14 Rack Information
14.1 Overview
The ReadyRails™ static rail systems for the R210 II provide toolless 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
17 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 toolless 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 17. 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 18 for specific
adjustment range information on each rail system.
Table 18. Rail Adjustability Ranges and Depth
Product
Rail
ID
Mounting
Interface
Rail
Type
Rail Adjustability Range
(mm)
Rail Depth
(mm)
Square
Round
Threaded
without
CMA
with
CMA
Min
Max
Min
Max
Min
Max
R210 II
A4
ReadyRails/
Generic
Static
608
879
594
872
604
890
622
—
A6
ReadyRails/
Generic
Static
5081
751
4941
744
5191
762
515
1
376
2
—
1
With middle brackets removed
2
With rear brackets removed (applies to 2-post or cantilever mount only)