Dell EMC PowerMax Series Instructions for use

Dell EMC™PowerMax™Family
Best Practices Guide
for AC Power Connections
PowerMax 2000 and PowerMax 8000
with PowerMaxOS
REVISION 2.0

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Published May 2018
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Published in the USA.
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www.DellEMC.com
2Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS

5
7
Preface 9
Revision history...........................................................................................12
Best Practices Guide for AC Power Connections 13
Best practices overview for AC power connections.................................... 14
Selecting the proper AC power connection procedure................................ 15
Procedure A: Working with the customer's electrician onsite..................... 16
Procedure A, Task 1: Customer's electrician...................................17
Procedure A, Task 2: Dell EMC Customer Engineer .......................18
Procedure A, Task 3: Customer's electrician.................................. 21
Procedure B: Verify and connect................................................................22
Procedure C: Obtain customer verification.................................................23
PDU labels.................................................................................................. 23
PDU label part number...................................................................23
Applying PDU labels.......................................................................25
Ground the cabinet.....................................................................................25
AC power specifications............................................................................. 27
Figures
Tables
Chapter 1
CONTENTS
Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS 3

CONTENTS
4Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS

Two independent customer-supplied PDUs.................................................................14
Circuit breakers ON — AC power within specification................................................ 17
Circuit breakers OFF — No AC power........................................................................ 17
Connecting AC power, single-phase, PowerMax 2000................................................18
Connecting AC power, single-phase, PowerMax 8000................................................19
Connecting AC power, three-phase............................................................................ 19
Power zone connections............................................................................................ 20
PDU label , single-phase and three-phase...................................................................25
Location of cabinet ground lugs..................................................................................26
1
2
3
4
5
6
7
8
9
FIGURES
Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS 5

FIGURES
6Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS

Typographical conventions used in this content..........................................................10
Revision history...........................................................................................................12
Procedure options for AC power connection ..............................................................15
PDU label part number................................................................................................23
PDU label location, Dell EMC racks.............................................................................23
PDU label location, third-party racks.......................................................................... 24
Input power requirements - Single-phase, North American, International, Australian
................................................................................................................................... 27
Input power requirements - Three-phase, North American, International, Australian
................................................................................................................................... 28
1
2
3
4
5
6
7
8
TABLES
Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS 7

TABLES
8Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS

Preface
As part of an effort to improve its product lines, Dell EMC periodically releases
revisions of its software and hardware. Therefore, some functions described in this
document might not be supported by all versions of the software or hardware
currently in use. The product release notes provide the most up-to-date information
on product features.
Contact your Dell EMC representative if a product does not function properly or does
not function as described in this document.
Note
This document was accurate at publication time. New versions of this document might
be released on Dell EMC Online Support (https://support.emc.com). Check to ensure
that you are using the latest version of this document.
Purpose
This document describes best practices for connecting AC power to the following
PowerMax arrays:
lPowerMax 2000
lPowerMax 8000
Audience
This document is intended for customers who are installing a PowerMax array and
must assure that fault tolerant AC power is supplied to the arrays from independent,
customer-supplied, power distribution units (PDUs).
Related documentation
Dell EMC PowerMax Family Product Guide
Provides information on PowerMax 2000 and 8000 arrays with PowerMaxOS
5978.
Dell EMC PowerMax Family Site Planning Guide
Provides planning information regarding the purchase and installation of a
PowerMax 2000, 8000 with PowerMaxOS.
PowerMaxOS 5978.144.144 Release Notes for Dell EMC PowerMax and All Flash
Describes new features and any limitations.
Dell EMC PowerMax Family Security Configuration Guide
Shows how to securely deploy PowerMax arrays running PowerMaxOS.
Special notice conventions used in this document
Dell EMC uses the following conventions for special notices:
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
Preface 9

WARNING
Indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE
Addresses practices not related to personal injury.
Note
Presents information that is important, but not hazard-related.
Typographical conventions
Dell EMC uses the following type style conventions in this document:
Table 1 Typographical conventions used in this content
Bold Used for names of interface elements, such as names of windows,
dialog boxes, buttons, fields, tab names, key names, and menu paths
(what the user specifically selects or clicks)
Italic Used for full titles of publications referenced in text
Monospace Used for:
lSystem code
lSystem output, such as an error message or script
lPathnames, filenames, prompts, and syntax
lCommands and options
Monospace italic Used for variables
Monospace bold Used for user input
[ ] Square brackets enclose optional values
| Vertical bar indicates alternate selections - the bar means “or”
{ } Braces enclose content that the user must specify, such as x or y or
z
... Ellipses indicate nonessential information omitted from the example
Where to get help
EMC support, product, and licensing information can be obtained as follows:
Product information
Dell EMC technical support, documentation, release notes, software updates, or
information about Dell EMC products can be obtained at https://
support.emc.com (registration required) or https://www.dellemc.com/en-us/
documentation/vmax-all-flash-family.htm.
Preface
10 Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS

Technical support
To open a service request through the Dell EMC Online Support (https://
support.emc.com) site, you must have a valid support agreement. Contact your
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agreement or to answer any questions about your account.
Your comments
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Preface
11

Revision history
Table 2 Revision history
Revision Description and/or change Date
released
2.0 Updated Procedure A, Task 2 for PowerMax 2000. May, 2018
1.0 First release of the Dell EMC Best Practices Guide for AC Power
Connections for PowerMax 2000, 8000 with PowerMaxOS .
May, 2018
Preface
12 Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS

CHAPTER 1
Best Practices Guide for AC Power
Connections
lBest practices overview for AC power connections............................................ 14
lSelecting the proper AC power connection procedure........................................15
lProcedure A: Working with the customer's electrician onsite............................. 16
lProcedure B: Verify and connect....................................................................... 22
lProcedure C: Obtain customer verification........................................................ 23
lPDU labels..........................................................................................................23
lGround the cabinet............................................................................................ 25
lAC power specifications..................................................................................... 27
Best Practices Guide for AC Power Connections 13

Best practices overview for AC power connections
To assure fault tolerant power, external AC power must be supplied from independent,
customer-supplied, power distribution units (PDUs) as shown in Figure 1 on page 14.
For systems operating from three phase AC power, two independent and isolated AC
power sources are recommended for the two individual power zones in each rack of
the system. This provides for the highest level of redundancy and system availability.
If independent AC power is not available, there is a higher risk of data unavailability
should a power failure occur, including individual phase loss occurring in both power
zones.
Before connecting external AC power to storage bays, verify that the bays have been
placed in their final position as explained in the installation guide.
Figure 1 Two independent customer-supplied PDUs
Customer’s
PDU 1
Customer’s
PDU 2
Circuit
breakers
on (|)
Circuit
breakers
on (|)
Circuit breakers - Numbers
27
28
29
30
Circuit breakers - Numbers
...
8
9
10
11
...
Power feed 1 Power feed 2
Best Practices Guide for AC Power Connections
14 Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS

Selecting the proper AC power connection procedure
Note
The Dell EMC Customer Engineer must select the proper AC power connection
procedure.
Table 3 on page 15 summarizes the three possible scenarios to connect customer
AC power to the storage array. Select the procedure that matches the customer's
situation.
Table 3 Procedure options for AC power connection
Situation on site Procedure
The customer’s electrician is available at the installation site. Procedure A: Working with the customer's electrician onsite
on page 16. This procedure assures fault tolerant power in
the storage array.
The customer’s electrician is NOT available at the installation
site, but you have access to customer-supplied, labeled,
power cables (beneath a raised floor or overhead).
Procedure B: Verify and connect on page 22
The customer’s electrician is NOT available at the installation
site, customer-supplied PDU source cables are already
plugged into the PDU , and you have no access to the
customer-supplied power cables.
Procedure C: Obtain customer verification on page 23
Best Practices Guide for AC Power Connections
Selecting the proper AC power connection procedure 15

Procedure A: Working with the customer's electrician onsite
Use this procedure if the customer’s electrician is available at the installation site.
This procedure requires three basic tasks that alternate between the customer's
electrician, the Dell EMC CE and back to the customer's electrician.
lTask 1: Customer's electrician
lTask 2: Dell EMC Customer Engineer (CE)
lTask 3: Customer's electrician
Best Practices Guide for AC Power Connections
16 Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS

Procedure A, Task 1: Customer's electrician
NOTICE
This task is performed by the customer's electrician.
Procedure
1. Verify that the customer-supplied AC source voltage output on each customer-
supplied PDU is within the AC power specification shown in AC power
specifications on page 27. Measure the voltage output of each power cable as
shown in Figure 2 on page 17.
2. Turn OFF all the relevant circuit breakers in customer-supplied PDU 1 and
customer-supplied PDU 2.
3. Verify that the customer-supplied power cables connected to PDU 1 and PDU 2
have no power as shown in Figure 3 on page 17.
Figure 2 Circuit breakers ON — AC power within specification
Customer’s
PDU 1
Customer’s
PDU 2
Circuit
breakers
on (|)
Circuit
breakers
on (|)
Circuit breakers - Numbers
27
28
29
30
Circuit breakers - Numbers
...
8
9
10
11
...
Labels on
customer
power lines
Power feed 1 Power feed 2
PDU 1
CB 28
PDU 2
CB 9
Voltmeter
TYPE PM89 CLASS 25 01
0
100
240
300
V
Voltmeter
TYPE PM89 CLASS 25 01
0
100
240
300
V
Figure 3 Circuit breakers OFF — No AC power
Customer’s
PDU 1
Customer’s
PDU 2
Circuit
breaker
off (0)
Circuit
breaker
off (0)
Circuit breakers - Numbers
27
28
29
30
Circuit breakers - Numbers
...
8
9
10
11
...
PDU 2
CB 9
PDU 1
CB 28
Labels on
customer
power lines
Voltmeter
TYPE PM89 CLASS 25 01
0
100
240
300
V
Voltmeter
TYPE PM89 CLASS 25 01
0
100
240
300
V
Best Practices Guide for AC Power Connections
Procedure A, Task 1: Customer's electrician 17

Procedure A, Task 2: Dell EMC Customer Engineer
Before you begin
Before connecting power to the system, make sure that the power for both zone A
and zone B are turned OFF. This task is performed by the Dell EMC Customer
Engineer.
Procedure
1. Confirm that the customer-supplied power cables are labeled and that each
label contains the relevant customer-supplied PDU and circuit breaker numbers.
If power cables are not equipped with labels, alert the customer.
2. Compare the numbers on the customer-supplied power cables for each storage
bay to verify that power zone A and power zone B are powered by a different
customer-supplied PDU.
3. Do one of the following to connect power zone A and power zone B in each bay.
lFor single-phase power: Connect customer-supplied PDU power cables to
the storage bay by connecting to the bay's AC input cables for power zone A
and power zone B as shown below.
Figure 4 Connecting AC power, single-phase, PowerMax 2000
Customer’s PDU 1
Zone B
AC input
cable B
Mating connector or
customer-supplied cable
Customer’s PDU 2
Zone A
AC input
cable A
Mating connector or
customer-supplied cable
Dell EMC-supplied power cable
and connector from the PDU
Cable connectors are shown
as they exit the bottom rear
of the bay.
Rear view
System bay
Dell EMC-supplied power cable
and connector from the PDU
P1 P3 P4 P1 P3 P4
System #1: P1, P3
System #2: P4, P6
P3 and P6 used
depending on
conguration
P6 P6
Best Practices Guide for AC Power Connections
18 Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS

Figure 5 Connecting AC power, single-phase, PowerMax 8000
Customer’s PDU 1
Zone B
AC input
cable B
Mating connector or
customer-supplied cable
Customer’s PDU 2
Zone A
AC input
cable A
Mating connector or
customer-supplied cable
Dell EMC-supplied power cable
and connector from the PDU
Cable connectors are shown
as they exit the bottom rear
of the bay.
Rear view
System bay
Dell EMC-supplied power cable
and connector from the PDU
P1 P3 P5 P1 P3 P5
P3 and P5 used
depending on
conguration
lFor three-phase power: Connect customer-supplied PDU power cables to
the storage bay by connecting to the bay's AC input cables for power zone A
and power zone B as shown below.
Figure 6 Connecting AC power, three-phase
Customer’s PDU 1
Zone B
AC input
cable B
Mating connector or
customer-supplied cable
Customer’s PDU 2
Zone A
AC input
cable A
Mating connector or
customer-supplied cable
Dell EMC-supplied power cable
and connector from the PDU
Rear view
System bay
Dell EMC-supplied power cable
and connector from the PDU Cable connectors are shown
as they exit the bottom rear
of the bay.
Best Practices Guide for AC Power Connections
Procedure A, Task 2: Dell EMC Customer Engineer 19

NOTICE
Do not connect storage bay power zone A and power zone B to the same
customer-supplied PDU. The customer will lose power redundancy and risk Data
Unavailability (DU) if the PDU fails or is turned off during a maintenance
procedure.
Figure 7 Power zone connections
:
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natropm
I
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curtsniotrefeR
Zone B Zone A
(Rear View)
SYSTEM
Customer’s Power
Source 1
Circuit
Breakers
(CBs)
Zone B Zone A
(Rear View)
SYSTEM
Customer’s Power
Source 1
Circuit
Breakers
(CBs)
Customer’s Power
Source 2
Circuit
Breakers
(CBs)
:
t
natropm
I
laun
a
mnoi
t
curtsniotrefeR
Zone B Zone A
(Rear View)
SYSTEM
Customer’s Power
Source 1
Circuit
Breakers
(CBs)
Zone B Zone A
(Rear View)
SYSTEM
Customer’s Power
Source 1
Circuit
Breakers
(CBs)
Customer’s Power
Source 2
Circuit
Breakers
(CBs)
046-001-749_01
Best Practices Guide for AC Power Connections
20 Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS