Dell EMC PowerMax Series, PowerMax 8000, PowerMax 2000 Best Practices Manual

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Dell EMC™ PowerMax™ Family Best Practices Guide

for AC Power Connections

PowerMax 2000 and PowerMax 8000 with PowerMaxOS

REVISION 2.0

Published May 2018

Dell believes the information in this publication is accurate as of its publication date. The information is subject to change without notice.

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Published in the USA.

Dell EMC Hopkinton, Massachusetts 01748-9103 1-508-435-1000 In North America 1-866-464-7381 www.DellEMC.com

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

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

4 Best 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

6 Best 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

TABLES

Best Practices Guide for AC Power Connections PowerMax 2000 and PowerMax 8000 with PowerMaxOS 7

TABLES

8 Best 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:

PowerMax 2000

PowerMax 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:

System code

System output, such as an error message or script

Pathnames, filenames, prompts, and syntax

Commands 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

... 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

Dell EMC sales representative for details about obtaining a valid support agreement or to answer any questions about your account.

Your comments

Your suggestions help us improve the accuracy, organization, and overall quality of the documentation. Send your comments and feedback to:

VMAXContentFeedback@emc.com

Preface

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

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 B: Verify and connect....................................................................... 22

Procedure C: Obtain customer verification........................................................ 23

PDU labels..........................................................................................................23

Ground the cabinet............................................................................................ 25

AC power specifications.....................................................................................27

Best Practices Guide for AC Power Connections

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 - Numbers

...

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.

Task 1: Customer's electrician

Task 2: Dell EMC Customer Engineer (CE)

Task 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 customersupplied 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 - Numbers

...

Labels on customer power lines

Power feed 1

Power feed 2

PDU 1

CB 28

PDU 2 CB 9

Volt

ete

TYPE PM89

CLASS 25 01

100

240

300

Volt

ete

TYPE PM89

CLASS 25 01

100

240

300

Figure 3 Circuit breakers OFF — No AC power

Customer’s PDU 1

Customer’s PDU 2

Circuit breaker off (0)

Circuit breakers - Numbers

...

PDU 2 CB 9

PDU 1

CB 28

Labels on customer power lines

Voltmeter

TYPE PM89

CLASS 25 01

100

240

300

Voltmeter

TYPE PM89

CLASS 25 01

100

240

300

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.

For 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

For 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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launam noitcurtsni ot refeR

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)

:tnatropm

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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

Procedure A, Task 3: Customer's electrician

Note

This task is performed by the customer's electrician.

Procedure

1. Working with the Dell EMC Customer Engineer, turn ON all the relevant circuit breakers in customer-supplied PDU 2.

Verify that only power supply and/or SPS LEDs in power zone A are ON or flashing green in every bay in the array.

CAUTION

The bay is incorrectly wired if all (power zone A and B) power supply and/or SPS LEDs in a bay are ON or flashing green. Check that the AC power to both storage bay power zones is not supplied by a single PDU (customer-supplied PDU 2). The wiring must be corrected before moving on to the next step.

2. Turn OFF the relevant circuit breakers in customer-supplied PDU 2.

Verify that the power supply and/or SPS LEDs that turned green in the previous step changed from green to OFF and/or flashing yellow. The yellow SPS lights flash for a maximum of 5 minutes.

Note

Power supplies connected to an SPS continue to have green lights ON while the SPS yellow light continues to flash indicating the SPS is providing on-battery power.

3. Repeat step 1 and step 2 for power zone B and customer-supplied PDU 1.

4. Turn ON all the relevant circuit breakers in customer-supplied PDU 1 and customer-supplied PDU 2.

5. Label the PDUs as described in Applying PDU labels on page 25.

Best Practices Guide for AC Power Connections

Procedure A, Task 3: Customer's electrician 21

Procedure B: Verify and connect

Perform this procedure if the two conditions listed below are true:

You have access to customer-supplied, labeled, power cables (beneath raised floor or overhead).

The customer's electrician is not available at the installation site.

This procedure requires the Dell EMC Customer Engineer to verify that the customer's electrician has complied with power specifications. Once verified, the Dell EMC Customer Engineer makes the required power connections overhead or under the floor.

Procedure

1. Have the customer verify that their electrician has complied with power specifications for voltage levels and redundancy. If the customer cannot verify this, provide them with a copy of Procedure A. Inform the customer that their array may prematurely shut down in the event of a site power issue.

2. Access the labeled, power cables (beneath raised floor or overhead) to verify that the customer-supplied power cables are properly labeled as shown in

Figure 3 on page 17 and described in Procedure A, Task 2.

3. 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.

4. Connect the customer-supplied power cables to the storage bay power zones as described in Procedure A, Task 2.

5. Record the customer-supplied PDU information as described in Procedure A, Task 2.

6. Label the PDUs as described in Applying PDU labels on page 25.

Best Practices Guide for AC Power Connections

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

Procedure C: Obtain customer verification

Perform this procedure if the three conditions listed below are true:

The customer-supplied PDU source cables are already plugged into the storage bay PDU.

You have no access to the area below the raised floor.

The customer's electrician is not available at the installation site.

Procedure

2. Record the customer-supplied PDU information (AC source voltage) as described in step 1 of Procedure A, Task 1: Customer's electrician on page 17 and label the PDUs as described in Applying PDU labels on page 25.

PDU labels

Before applying labels to the sidewalls of the cabinet, one of the following procedures must have been completed:

Procedure A: Working with the customer's electrician onsite on page 16

Procedure B: Verify and connect on page 22

Procedure C: Obtain customer verification on page 23

If necessary, see Selecting the proper AC power connection procedure on page 15 to select the correct procedure.

PDU label part number

Table 4

PDU label part number

Part Number Description

046-001-750 LABEL: CUSTOMER 1P 3P PDU INFO WRITEABLE

Table 5 PDU label location, Dell EMC racks

Product Location

PowerMax 2000 HERC OPEN ME FIRST KIT

PN 106-887-306

PowerMax 8000 OPEN ME FIRST FIELD INSTALL KIT

PN 106-887-026

Best Practices Guide for AC Power Connections

Procedure C: Obtain customer verification 23

Table 6 PDU label location, third-party racks

Product Location

PowerMax 2000 HERC ENG 1 PBRICK 3RD PTY INSTALL KIT

PN 106-887-303

PowerMax 8000 ENGINE 1 3RD PTY PBRICK ZEUS

PN 106-887-268

Best Practices Guide for AC Power Connections

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

Applying PDU labels

Procedure

1. For each bay, locate and complete each PDU label.

Note

For three-phase power, enter data only in the P1 column.

2. Place each label on the rear cabinet sidewall for side A and B.

Figure 8 PDU label , single-phase and three-phase

3. For third-party racks, do one of the following:

For three-phase power: Using plastic ties, attach the PDU connection tag to the main AC power cable connected to zone A and B. Place the label close to the plug but on the side of the rack where it will not interfere with any rails.

For single-phase power: Using plastic ties, attach the PDU connection tag to the P1 AC power cable connected to zone A and B. Place the label close to the plug but on the side of the rack where it will not interfere with any rails.

Ground the cabinet

Equipment correctly installed within the cabinet is grounded through the AC power cables and connectors. In general, supplemental grounding is not required.

If your site requires external grounding (for example, to a common grounding network beneath the site floor), you can use the grounding lugs provided on each of the cabinet’s bottom supports.

Best Practices Guide for AC Power Connections

Applying PDU labels 25

Figure 9 Location of cabinet ground lugs

CL4827

046-003-350

Best Practices Guide for AC Power Connections

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

AC power specifications

Table 7 Input power requirements - Single-phase, North American, International, Australian

Specification North American 3-wire

connection (2 L & 1 G)

International and Australian 3-wire connection (1 L & 1 N & 1 G)

Input nominal voltage 200–240 VAC ± 10% L- L

nom

220–240 VAC ± 10% L- N nom

Frequency 50–60 Hz 50–60 Hz

Circuit breakers 30 A 32 A

Power zones Two Two

Minimum power requirements at customer site

PowerMax 2000: Up to two 30 A or 32 A single-phase drops per zone.

PowerMax 8000: Up to three 30 A or 32 A single-phase drops per zone.

Two power zones require 6 drops, each drop rated for 30 A or 32 A. (Maximum PowerMax 8000 configuration.)

PDU A and PDU B require three separate single-phase 30 A or 32 A drops for each PDU.

L = line or phase, N = neutral, G = ground

Best Practices Guide for AC Power Connections

AC power specifications 27

Table 8 Input power requirements - Three-phase, North American, International, Australian

Specification North American 4-wire

connection (3 L & 1 G)

International 5-wire connection (3 L & 1 N & 1 G)

Input voltage

200–240 VAC ± 10% L- L nom

220–240 VAC ± 10% L- N nom

Frequency 50–60 Hz 50–60 Hz

Circuit breakers 50 A 32 A

Power zones Two Two

Minimum power requirements at customer site

Two 50 A, three-phase drops per bay.

PDU A and PDU B require one separate three-phase Delta 50 A drops for each.

Two 32 A, three-phase drops per bay.

L = line or phase, N = neutral, G = ground

An imbalance of AC input currents may exist on the three-phase power source feeding the array, depending on the configuration. The customer's electrician must be alerted to this possible condition to balance the phase-by-phase loading conditions within the customer's data center.

Best Practices Guide for AC Power Connections

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

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