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 NEMA
Front NEMA
Front NEMA
Rear NEMA
F
ron
t
—
F
ron
t
D
oor
—
Rack
Post
Rack
Post
Rack
Post
pw
pw
Customer
PDU
Customer
PDU
Space required by enclosures
engine rails, and cable
management arms
j
—
R
e
a
r
D
oor
—
e
a
b
c
(24” (60.96 cm) min)
Min depth (k)
(43” (109.2 cm) min)
R
e
ar
1
9
”
N
E
M
A
(4
8
.2
6
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
