Owner's manual

Power distribut

ion

AC power is distributed to the rack through a dual Power Distribution Unit (PDU) assembly mounted at the

bottom rear of the rack. The characteristics of the fully-re d und a nt rack power conﬁguration are as follows:

• Each PDU is connected to a separate circuit breaker-protected, 30–A AC site power source

(220–240 VAC ±1

0%, 50 or 60–Hz, ±5%). Figure 30 illustrates the compatible 60–Hz and

50–Hz wall receptacles.

CXO7549

NEMA L6-30R re

ceptacle, 3 -wire, 30-A, 60-Hz

CXO5409

IEC 309 receptacle, 3–wire, 30–A, 50–Hz

Figure 30 60–

Hz and 50–Hz wall receptacles

• The standard power conﬁguration for any Enterprise Virtual Array rack is the fully r edundant

conﬁguration. Implementing this con ﬁguration requires:

• Two separate circuit breaker-protected, 30–A site power sources with a compatible wall

receptacl

e(seeFigure 30).

• One dual PDU assembly. Each PDU connects to a different wall receptacle.

• Six Power D istribution Modules (PDM) per rack. Three PDMs mount vertically on each side

of the rac

k. Each set of PDMs connects to a different PDU.

• The d rive enclosure power supplies o n the left (PS 1) connect to the PDMs on the left with a

gray, 66 cm (26 in) power cord.

• The drive

enclosurepowersuppliesontheright(PS2)connecttothePDMsontherightwitha

black, 66 cm (26 in) power cord.

• The upper controller connects to a PDM on the left with a gray, 152 cm (60 in) power cord.

•Thelowe

r controller connects to a PDM on the right with a black, 66 cm (26 in) power cord.

NOTE:

Drive enclosures, when purchased separately, include one 50 cm black cable and one 50 cm gray cable.

The conﬁguration p rovides complete power redundancy and elim i nates all single points of failure for

both the AC and DC power distribution.

PDUs

Each Enterprise Virtual Array rack has either a 50– or 60–Hz, dual PDU mounted at the bottom rear

of the rack. The 228481–002/228481–003 PDU placement is back-to-back, plugs facing down, with

switches on top.

• The standard 50–Hz PDU cable has a n IEC 309, 3–wire, 30–A, 50–Hz connector.

• The standard 60–Hz PDU cable has a NEMA L6–30P, 3–wire, 30–A, 60–Hz connector.

If these connectors are not compatible with the site power distribution, you must replace the PDU power

cord cable connector.

Enterprise Virtual Array hardware components