Requirements for third party racks with vertical PDUs (rear-facing)
If using a rear-facing PDU within a third party rack, refer to the diagram below to
ensure that the rack and PDU combination are sufficient for the array.
Figure 32 Requirements for customer rack with rear-facing, vertical PDUs
Customer Rack with rear-facing non-EMC PDU, Top View
Rack
Post
Rear NEMAFront NEMA
Front NEMA
Rear NEMA
Front
—Front Door—
Rack
Post
Rack
Post
Rack
Post
pw
pw
Customer
PDU
Customer
PDU
Space required by enclosures
engine rails, and cable
management arms
j
—Rear Door—
e
a
b
c
(24” (60.96 cm) min)
Min depth (k)
(43” (109.2 cm) min)
Rear
19” NEMA
(48.26 cm)
d
2.5” (6.35 cm) (min)
f
g
f
g
h
i
Rack depth = a+b+c
Dim Label
Description
a = distance between front surface of rack post and NEMA rail.
b = distance between NEMA rails.
(24" (60.96 cm) recommended, up to 34" (86.36 cm) allowed.)
c = distance between rear NEMA rails to exterior, rear surface of rack.
d If a front door exists, = distance between inner-front surface of the front door and the front NEMA
rail.
e = distance between rear surface of rack post to inner surface of rear door.
f = distance between inside surface of rack post and 19" (48.26cm) space required by rails,
enclosures, and cable management arms. Minimum of 3" (7.62cm) is recommended.
Note: If no rack post, minimum recommended distance is measured to inside surface of rack.
g = width of rack post.
h = 19" (48.26 cm) + (2f)
Min requirement = 25" (63.5 cm)
i = rack width (minimum)
19" (48.26 cm) + (2f) + (2g)
Where:
Third Party Racking Option for VMAX 450F, VMAX 850F and VMAX 950F
100 Site Planning Guide VMAX 250F, VMAX 450F, VMAX 850F, VMAX 950F with HYPERMAX OS
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