Stratus ftServer 4900 Series - Figure 9-2. EIA Vertical Rail Hole Pattern

Numbering the Vertical Rails
9-4 Stratus ftServer 29x0, 49x0, and 69x0 Systems: Site Planning and Installation Guide (R786)
Figure 9-2. EIA Vertical Rail Hole Pattern
The following example shows how to number the rails for a configuration that includes
the optional PDUs and optional ftScalable Storage systems.
1. On each of the front and rear rails, number the two U where you will install the
PDUs. Each PDU requires a 1U space. Mark the number 1 next to the middle hole
of the first U and the number 2 next to the middle hole of the second U, as shown
in Figure 9-3.
NOTE
Install the first pair of PDUs in the bottom two contiguous
one-U locations of the cabinet. If you are installing a
second pair, install it in two convenient, contiguous one-U
locations in the middle of the cabinet.
2. On each of the front and rear rails, number the middle holes of the 4U spaces
where you will install the system shelf unit. Mark the number 3 next to the middle
hole of the third U, the number 4 next to the middle hole of the fourth U, the number
5 next to the middle hole of the fifth U, and the number 6 next to the middle hole of
the sixth U, as shown in Figure 9-3.
3. If you are installing additional systems in the same cabinet, continue numbering the
middle hole of another 4U for each shelf unit.
1 U
1 U
5/8 in.
(1.59 cm)
5/8 in.
(1.59 cm)
1/2 in.
(1.27 cm)
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