HP StorageWorks XP10000 Disk Array Site Prep Manual

HP StorageWorks XP10000 Disk Array
Site Prep Guide

This guide describes how to prepare your site for the HP StorageWorks XP10000 Disk Array.

Par t number: AE102-96004
second edition: (December 2005)

Legal and notice information

© Copyright 2005 Hewlett-Packard Development Company, L.P., all rights reserved.

Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with
FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical
Data for Commercial Items are licensed to the U.S. Government under vendor’s standard commercial license.

The information contained herein is subject to change without notice. The only warranties for HP products
and services are set forth in the express warranty statements accompanying such products and services.
Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical
or editorial errors or omissions contained herein.

Intel, Itanium, Pentium, Intel Inside, and the Intel Inside logo are trademarks or registered trademarks of Intel
Corporation or its subsidiaries in the United States and other c ountries.

Microsoft, Windows, Windows XP, and Windows NT are U.S. registered trademarks of Microsoft Corporation.

Adobe and Acrobat are trademarks of Adobe Systems Incorporated.

Java is a US trademark of Sun Microsystems, Inc.

Oracle is a registered US trademark of Oracle Corporation, Redwood City, California.

Linux is a U.S. registered trademark of Linus Torvalds.

UNIX is a registered trademark of The Open Group.

Printed in the US

HP StorageWorks XP10000 Disk Array Site Prep Guide

Contents

Preface ......................... 6

Aboutthisguide................................ 6

Intendedaudience............................... 6

DiskArrays.................................. 6

RelatedDocumentation............................. 6

Documentconventionsandsymbols ....................... 7

Rackstability ................................. 8

HPtechnicalsupport.............................. 8

Subscriptionservice .............................. 8

OtherHPwebsites .............................. 9

1Siteprepteamandtasks................ 11

Thesiteprepteam.............................. 12

HPrepresentativeresponsibilities...................... 12

Customerresponsibilities ......................... 12

Sitepreptasks ............................... 13

Siteprepchecklist ............................ 14

Sitepreptimeallowances......................... 16

2Siterequirements ................... 17

Disk array physical specifications ....................... 18

Dimensionsandweights ......................... 20

Componentweights ........................... 21

Calculating the weight of your disk array configuration ............ 23

Weightcalculationexample........................ 24

Deliveryspacerequirements.......................... 25

Generalcomputerroomrequirements...................... 26

Preventingelectrostaticdischarge ..................... 27

Safetyrequirements ............................. 28

Firesafety ............................... 28

Equipmentservicinghazards ....................... 28

Electricalhazards ............................ 28

Spaceplanningrequirements ......................... 29

Thespaceplanningprocess........................ 29

Raised floorrequirements........................... 30

Estimating required floorloadrating .................... 31

Floorcovering.............................. 31

HP StorageWorks XP10000 Disk Array Site Prep Guide

3

Floorclearanceandcutoutdimensions ................... 32

Primaryrackdimensionsandcablecutoutlocation............ 32

Calculatingclearances........................ 33

Primary and second rack clearance dimensions and cutouts . . . . . . . . 37

Environmentalrequirements.......................... 40

Altitude ................................ 40

Airconditioning............................. 40

Temperature specifications ........................ 41

Humidity specifications.......................... 42

Mechanical vibration specifications..................... 43

Shock specifications ........................... 43

Heat dissipation, power consumption, and air flow .............. 44

Acoustics................................ 46

Dustandpollutioncontrol......................... 47

Metallicparticulatecontamination ..................... 47

Datacommrequirements ........................... 48

Electricalrequirements ............................ 49

Linevoltage............................... 49

Branchcircuitbreakers.......................... 49

Single-phasebranchcircuitbreakers .................. 49

Frequency ............................... 49

Safetyanddedicatedground ....................... 49

Groundingrequirements ......................... 50

ACconnections ............................. 50

Powerlinetransients ........................... 51

Protection against sources of electrical interference . . . . . . . . . . . . . . 51

Uninterruptiblepowersupply(UPS)....................... 52

3Electricalspecifications................. 53

AClinevoltagerequirements ......................... 53

ACinputs................................ 54

NorthAmericanACpowercabling....................... 56

Branchcircuitrequirements ........................ 56

EuropeanACpowercabling ......................... 57

Europeanbranchcircuitrequirements.................... 57

ConnectingtheEuropeanpower-supplycables................ 58

4Deliveryandunpacking ................ 59

Checkingforshippingshortageanddamage .................. 60

Unpackingtheequipment........................... 60

Requiredpersonnel ........................... 60

Requiredtools.............................. 60

Packaging configurations......................... 61

Unpackingprocess............................ 61

Safetyprecautions.......................... 62

Removingpackagingmaterials .................... 63

4

Glossary........................ 67

Index ......................... 75

HP StorageWorks XP10000 Disk Array Site Prep Guide

5

Preface

About this guide

This guide provides information about preparing your site for installation of the XP10000
Disk Array.

Intended audience

This guide is intended for system administrators with knowledge of the host hardware,
the operating sy

stem, and RAID technology.

Disk Arrays

Unless otherwise noted, the term disk array refers to the XP10000 D isk Array.

Related Documentation

HP provides the

se related documents:

• HP StorageWorks XP10000 Disk Array Owner’s Guide

• HP StorageWorks Remote Web Console XP User Guide

• HP StorageWor

ks Command View XP Advanced Edition User Guide

• HP StorageWorks Disk Array XP Operating System Configuration Guide

To locate these documents, to learn more about HP software products, or to obtain
software updates, visit the HP web site: h

ttp://h18006.www1.hp.com/storage/

xparrays.h

tml.

6

Preface

Document conventions and symbols

Convention

Element

Blue text

Cross-reference l

inks and email addresses

Bold

• Keys that are pre

ssed

• Text typed into a GUI element, such as a box

• GUI elements that are clicked or selected, such as

menu and list it

ems, buttons, tabs, and check boxes

• Literal values typed exactly as shown

Italics

Text emphasis and book titles

Blue, underlined:

w

ww.hp.com

Web site addresses

Monospace fo

nt

• File and directory names

• System outp

ut

• Code

• Commands, their arguments, and argument values

Monospace, italic
font

• Code variables

• Command v

ariables

Monospace, bold
font

Emphasized monospace text

WARNING!

Indicates that failure to follow directions could result in bodily harm or death.

CAUTION:

Indicates that failure to follow directions could result in damage to equipment or data.

NOTE:

Provides additional information.

HP StorageWorks XP10000 Disk Array Site Prep Guide

7

Rack stability

Rack stability protects personnel and equipment.

WARNING!

To reduce the r

isk of personal injury or damage to equipment:

• Extend leveling jacks to the floor.

• Ensure that the full weight of the rack rests on the leveling jacks.

• Install sta

bilizing feet on the rack.

• In multiple-rack installations, fasten racks together securely.

• Extend only one rack component at a time. Racks can become unstable if more

than one co

mponent is extended.

HP technical support

Telephone numbers for worldwide technical support are listed on the HP support web
site: h

ttp://www.hp.com/support/.

Collect the following information before calling:

• Technical support registration number (if applicable)

• Product serial numbers

• Product model names and numbers

• Error messages

• Operating system type and revision level

• Detailed questions

For continuous quality improvement, calls may be recorded or monitored.

Subscription serv ice

HP strongly recommends that customers register online using the Subscriber’s choice web
site: h

ttp://ww w.hp.com/go/e-updates.

Subscribing to this service provides you with e-mail updates on the latest product
enhancements, newest driver versions, and firmware documentation updates as well as
instant access to numerous other product resources.

After subscribing, locate your products by selecting Business suppor t and then Storage
under Product Category.

8

Preface

Other HP web sites

For additional information, see the following HP web sites:

•w

ww.hp.com

•www.hp.com/go/storage

•www.hp.com/service_locator

•www.docs.hp

.com

HP StorageWorks XP10000 Disk Array Site Prep Guide

9

10

Preface

1 Site prep team and tasks

The objective of a site preparation is to prepare your site for the successful and timely
installation of the HP XP10000 disk array. Proper site preparation is vital for the
reliability of the disk array.

Site prep involves a careful balance of equipment design criteria, site environmental
variables, your business needs, and your budget constraints.

In addition to this guide, other site prep resources may be available to you. The HP
service organization is committed to making sure you receive maximum benefitfromyour
disk array. HP representatives will guide and assist you throughout the site prep process.

HP StorageWorks XP10000 Disk Array Site Prep Guide

11

Thesiteprepteam

The site prep team plans, schedules, and completes all tasks necessary to prepare your
site for succ

essful disk array installation.

The site prep team consists of HP representatives and you, the customer.

HP representative responsibilities

The HP team includes various HP representatives who have the training, knowledge,
experience, tools, and parts required to install and maintain XP disk arrays. This team:

• Helps you to determine and implement the site requirements for your specific

site and array configuration

• Coordinates all HP resources to ensure successful delivery and installation of

the disk array

Your HP SR is your primary point of contact with HP during the site preparation process.

Customer responsibilities

As part of

thesiteprepteam,yourresponsibilitiesincludeplanningandpreparing

asuitab

le environment for the disk array, and scheduling equipment delivery and
installation. However, HP representatives are available to help you throughout the site
prep process. Your internal site team may include personnel specializing in your site
comput

er room, such as your storage administrator and your site electrician.

12

Site prep team and tasks

Site prep tasks

Contact your HP SR for assistance at any time during the site prep process.

1. If you have not printed a copy of this guide, HP recommends that you print at least

Chapter 2 and the “Site prep checklist”. Working from printed copies makes it
easier to use the tools provided and provides hard copy documents that you can
keep for you

rrecords.

2. Carefully review Chapter 2 to understand the site requirements for the disk array.

If you plan to connect additional external storage to the XP10000, be sure to
take the requirements of that storage into account. See the documentation for the
external

system.

3. Use the information, instructions, and tools in Chapter 2 to determine site

requirements for the specific disk array components you ordered.

4. On the si

te prep checklist, answer ea ch item “Yes” or “No” as it relates to your site.
The checklist includes references to the pages in this guide where you can find
more information on each item.

5. Checklist items that require a “Yes” answer are marked with asterisks (*). If you

answe

r “No” for any of these items, your site does not meet site requirements for the
disk array. Using the information in Chapter 2, correct the site environment so that
you can answer “Yes” for each of these items.

6. When your site meets all site requirements, contact your HP SR to coordinate

del

ivery of the disk array equipment.

7. If you choose to unpack the equipment cartons without HP supervision, follow the

instructions in Chapter 3.

8. Co

ntact the HP SR to schedule disk array installation and configuration.

HP StorageWorks XP10000 Disk Array Site Prep Guide

13

Site prep check

list

Checklist ite

ms that require a “Yes” answer a re marked with asterisks (*). The customer
summary information is included for the benefit of HP representatives, who will help
you complete the checklist.

Customer summary

Customer:

Date:

Address:

Contact:

Phone:

HP summary

HP SR:

Phone:

HP representative:

Phone:

Safety Yes No Reference

Is there a fire protection system in the
computer room?

Fire safety

Isthecomputerroomfreeofany
equipment servicing hazards (for
example, electrical or data cables
that obstruct access)?

Equipment servicing hazards

Is the exi

sting floor plan documented?

The space planning process

Has a new floor plan been developed
to include the new array?

The space planning process

Does the new floor plan include
adequate space for airflow and
servicing needs?

Floor clearance and cutout
dimensions

Does th

enewfloor plan include the

cleara

nce required for the floor’s load

ratin

g?

Floor clearance and cutout
dimensions

Is the computer room structurally
complete (walls, floor, air
conditioning system, and so
on)?

General computer room
requirementsAir conditioning

Is the raised floor adequate for the
equipment load?

Raised floor requirements

Is antistatic flooringormatsinstalled?

Pre

venting electrostatic discharge

14

Site prep team and tasks

Are there cutouts or channels for
cable routing?

Floor clearance and cutout
dimensions

Is there a dedicat

ed analog telephone

line for “phone home” configuration?

Data comm requirem

ents

Is a telephone line available for HP
representative use?

Data comm requirements

Is a private LAN available?

Data comm requirements

Can t he temperature be maintained
between 16× and 32× C?

Temperature spe

cifications

Can temperature changes be held to
less than 10× C per hour?

Temperature specifications

Can the humidity level be maintained
between 20% and 80%?

Humidity specifications

Is the compu

ter room protected

against dus

t, pollution, and metallic

particula

te contamination?

Dust and pol

lution controlMetallic

particulat

e contamination

Does the computer room support
other environmental considerations
(such as vibration and acoustics)?

Mechanical vibration
specificationsAcoustics

Are sufficient AC outlets, on different
lines, available for the equipment?

Electrical requirements

Does the

input voltage correspond to

the equipment specifications?

Electri

cal requirements

Are the input circuit breakers
adequate for equipment loads?

Electrical requirements

Does the input frequency correspond
to equipment specifications?

Electrical requirements

Is an appropriate uninterruptible
power supply (UPS) strategy in place?

Uninterruptible power supply (UPS)

If lightning arresters are
recommended, are they installed?

Protection against sources of
electrical interference

Have all sources of electrical
interference been corrected?

Protection against sources of
electrical interference

Doe

s the customer site have

ac

cess control (for example, do HP

re

presentatives need an escort)?

N/A

Does the computer room have
access control (for example, do HP
representatives need a security code)?

N/A

HP StorageWorks XP10000 Disk Array Site Prep Guide

15

Are all floors, stairs, elevators,
stairwalkers, lifts, ramps, or ladders
needed to move the equipment
adequate to support its weight and
size?

Dimensions and weights

Will the equipment fitthroughall
doors and corrid

ors and in lifts?

Dimensions and w

eights

Doesthebuildinghavealoading
dock? Maximum access height is
_____m.

Dimensions and weights

Additional equipment N/A

For any additi

onal equipment

required (fo

r example, connectors,

receptacles

,cables,andany

equipment n

ot supplied by HP), is the

equipment o

nsiteandreadyforuse?

N/A

Site prep time allowances

The following site prep tasks may require several weeks:

• Acquiring required power connectors

• Arranging for an electrician

• Adding or modifying air conditioning systems

• Making building alterations

• Placing an order for data comm equipment

The time between placing an equipment order and actual delivery can vary. Contact
your HP representative to determine the best estimated delivery dates.

16

Site prep team and tasks

2Siterequirements

Your site must meet the following requirements before HP can deliver and install the
disk array:

• General computer room requirements

• Safety requirements

• Raised floor requirements

• Environmental requirements

• Data comm requirements

• Electrical requirements

• Protection aga inst sources of electrical interference

• Uninterruptible power supply (UPS)

HP StorageWorks XP10000 Disk Array Site Prep Guide

17

Disk array physical specifications

Use the information in this section to determine the total dimensions and weight for your
specificarrayconfiguration. You will need these values to complete other procedures
in this chapter.

The followin

g figure shows the disk array equipment racks.

Primary rack

In the basic configuration, the disk array consists of one primary 19-inch rack containing
the following:

• One disk con

troller with control panel and SVP blade PC

• One 60-disk chassis, consisting of two 30-drive HDU boxes

• Mix board with disk adapters and host ports

• Power supp

lies, power distribution units (PDUs), backup batteries, power cords,

and cabling

Primary rack expansion

You can exp

and the primary rack as follows:

• Add one 60-disk chassis containing two 30-drive HDU boxes to the top space of

the primary rack. This provides a total of 120 drives.

Second rack

After exp

anding the primary rack, you can add a second 19-inch rack with additional

disk uni

ts as follows:

• Addone60-diskchassistothesecondrackforatotalof180drives

• Add a second 60-disk chassis to the second rack for a total of 240 drives

Disk arr

ay basic storage includes disk chassis R0 in the primary rack. Add more disk

chassi

s in the order shown in the figure: R1, R2, R3.

18 Site requirements

HP StorageWorks XP10000 Disk Array Site Prep Guide

19

Dimensions and

weights

Use the packaged values when determining delivery space and loading requirements
and unpackaged values during space and floor load planning. In the USA and Canada,
most shipments use a special carrier process in which frames are shipped without
pallets, ramps, or cartons. In these cases, the packaged weight is the unpackaged
weight plus

23 kg (50 lb).

Rack specification

Unpackaged rack Packaged rack

Width 610 mm, 24.0 inches 950 mm, 37.4 inches

Depth 925 mm, 36.4 inches 1110 mm, 43.7 inches

Height 1920 mm, 75.6 inches 2030 mm, 79.9 inches

Weight, p

rimary rack, basic

335.5 kg,

740 lbs

448.5 kg,

989 lbs

Weight, primary rack,
maximum

577 kg, 1272 lbs 690 kg, 1521 lbs

Weight second rack,
maximum

47 3 kg, 1043 lbs 586 kg, 1292 lbs

20 Site requirements

Component weig

hts

The following

table provides approximate weights of additional disk array components.

The number of d

isk drives is the m a in factor accounting for total weight of the disk

array. Actua

lweightofthearrayracksistheminimumrackweightplustheweightofall

additional components.

Product

Description

kg lb

AE006A

HP XP12000/100 00 16-port 2-Gb FC CHIP

5.0 11.0

AE007A

HP XP12000/10000 32-Port 2-Gb FC CHIP

5.8 12.8

AE008A

HP XP12000/

10000 FC SFP LW Transceiver

0.02

0.04

AE010A

XP12000/10000 32-port 4 Gbps FC SW
CHIP pair

5.9 13

AE013A

HP XP12000/10000 8-Port FICON SW CHIP

5.7

12.6

AE014A

HP XP12000/

10000 8-Port FICON LW CHIP

5.7

12.6

AE015A

XP12000/10000 16-port 1–2 Gbps FICON
SW CHIP pair

5.9 13

AE016A

XP12000/10000 16-port 1–2 Gbps FICON
LW C HIP pair

5.9 13

AE017A

HP XP12000

/10000 16-Port EXSA CHIP

5.4

11.9

AE018A

HP X P12000/10000 8-Port 1-Gb NAS SW
CHIP

6.5

14.3

AE025A

HP XP12000/10 000 4-GB Cache Memory

0.2

0.44

AE030A

HP XP1200

0/10000 1-GB Shared Memory

0.06 0.13

AE102A

HP XP10000 19" primary rack, disk
controller, base disk chassis for up to 60
HDDs, power supplies, base batteries for up to
12GB cache and up to 3GB Shared M emory

335.5

740

AE104B

HP XP10000 Disk Chassis

80.4

177

AE105B HP XP10

000 16-Port FC SW CHIP 8-Port ACP

5.0 11.0

AE110B

HP XP10000 Battery 8.0 17.6

AE115B

HP XP10000 Second Rack Disk Array Frame ­DKU

261

575

AE120A

HP XP

10000 73GB 15k rpm Array Group

4.4

9.7

AE120AS

HP XP10000 73GB 15k rpm Spare Disk

1.1

2.4

HP StorageWorks XP10000 Disk Array Site Prep Guide

21

Product

Description

kg lb

AE121A

HP XP10000 146GB 10k rpm Array Group

4

8.8

AE121AS

HP XP10000 146GB 10k rpm Spare Dis k

1

2.2

AE122A

HP XP10000 146GB 15k rpm Array Group

4

8.8

AE122AS

HP XP10000 146GB 15k rpm Spare Dis k

1

2.2

AE123B

HP XP10000 300GB

10k rpm Array Group

4

8.8

AE123BS

HP XP10000 300GB 10k rpm Spare Disk

1

2.2

22 Site requirements

Calculating the weight of your disk array configuration

The total weight of your array configuration includes the controller, the disk chassis, plus
the total of all disk drives in each cabinet and any optional components. Your site must
have adequate floor strength to suppor t the total weight of the array, from the delivery
area to the co

mputer room.

Fill in the following weight calculation worksheet to calculate the total weight of your
unpackaged array configuration, in your preferred units (kg or lb). Following the
worksheet is a completed example worksheet.

Use the calc

ulated total weight to estimate the required floor load rating for the computer

room as explained later in this chapter.

Part Number

Descriptio

n

Weight

Quantity

Total weigh

t

Total weight of your configuration

HP StorageWorks XP10000 Disk Array Site Prep Guide

23

Weight calcula

tion example

Part
Number

Description

Weight

Quan-

tity

Total

weight

AE102A

HP XP10000 19" Primary Rack, disk
controller, base disk chassis for up
to 60 HDDs, power supplies, base
batteries for up to 12GB cache and
up to 3GB Shared Memory

740 x

1=

740 .0

AE007A

HP XP12000/10000 32-Port 2-Gb
FC CHIP

12.8 x

1=

12.8

AE025A

HP XP12000/10000 4-GB Cache
Memory

0.44 x

1=

0.4

AE030A

HP X P12 000/10000 1-GB Shared
Memory

0.13 x 3 =

0.4

AE104B

HP XP10 000 Disk Chassis (holds up
to 60 drives)

177.0 x

1=

177.0

AE105B HP XP100

00 16Port FC SW CHIP

8-Port

ACP

11.0 x

1=

11.0

AE110B

HP XP10000 Battery 17.6 x

1=

17.6

AE123B

HP XP10000 300GB 10k rpm Array
Group

8.8 x 28 =

246.4

AE123BS

HP XP1

0000 300GB 10k rpm Spare

Disk

2.2 x 8 = 17 .6

Total unpackaged weight of your configuration (rounded)

1223.2

24

Site requirements

Delivery space requirements

The delivery area must provide enough space and floor strength to support the packaged
equipment cartons for the disk array. Refer to the packaged dimensions and weights
under the heading “Dimensions and weights.”

CAUTION:

Make sure tha

t your doorways and hallways provide enough clearance to move the

equipment s

afely from the delivery area to the computer room. Permanent obstructions
such as pillars or narrow doorways can cause equipment damage. If necessary, plan
for the removal of walls or doors.

CAUTION:

Make sure all floors, stairs, and elev ators you use when moving the disk arr ay to the
computer room can support the weight and size of the equipment. Failure to do so
could damage the equipment or your site.

HP StorageWorks XP10000 Disk Array Site Prep Guide

25

General computer room requirements

The goal of a computer room is to maintain an ideal environment for computer
equipment, including XP disk arrays.

Make sure your computer room adheres to all national and local building codes for a
data center/computer room environment.

HP recommend

s that you follow these general guidelines:

• Locate the computer room away from exterior walls of the building to avoid the

heat gain from windows and exterior wall surfaces.

• When exterior windows are unavoidable, use windows that are double or tripled

glazed and

shaded to prevent direct sunlight from entering the computer room.

• Maintainthecomputerroomatapositivepressurerelativetothesurrounding

spaces to reduce introduction of contaminants.

• Install a vapor barrier around the entire computer room envelope

(floors/

walls/ceiling) to help keep moisture out of the room. This is especially

import

ant if your computer room is located underground.

• Caulk and vapor-seal all pipes and cables that penetrate the computer room

envelope.

26 Site requirements

Preventing ele

ctrostatic discharge

Electrostatic discharge (ESD) can cause component damage, especially during servicing
operations.

Static charge

s occur when objects are separated or rubbed together. The voltage level

of a static ch

arge is determined by the following factors:

• Types of materials

• Relative humidity — low humidity tends to increase ESD voltage.

• Rate of chan

ge — a sta ndard air conditioner cools the air and lowers humidity.

The faster

the air is cooled and dried, the greater the likelihood of ESD.

• Separation — refers to the static discharge that can be generated when two

objects are separated. For example, printer paper is often stored in cool dry
conditions. If opened and used immediately, the act of removing the paper
from its box generates static.

Follow these precautions to minimize possible ESD-induced failures in your co mputer
room:

• Install c onductive flooring(conductiveadhesivemustbeusedwhenlayingtiles).

• Useconductivewaxifwaxedfloors are installed.

• Ensure

that all equipment and flooring are properly grounded and are at the

same ground potential.

• Useconductivetablesandchairs.

• Store

spare electric parts in antistatic containers.

• Use proper cooling equipment to reduce the risk of ESD by maintaining

recommended humidity level and airflow rates.

• Leave boxes of paper open in the computer room for several hours before use to

all

ow static to discharge gradually over time.

HP StorageWorks XP10000 Disk Array Site Prep Guide

27

Safety requirements

When making decisions concerning site safety, your first concern should be the safety of
your personnel and then the safety of your equipment.

Fundamental safeguards for disk arrays should include a site well away from any
sources of potential damage.

If you have any qu estions on site safety, consult your HP representative, your insurance
carrier, an

d local building inspectors for safety recommendations.

Fire safety

Consult your insurance carrier and local fire department for fire safety suggestions. They
can analyze your existing fire control systems and advise you on any required changes.
If you are building a new site or making structural changes to an existing site, consult
your local b uild ing cod es for fire prevention and protection guidelines.

Equipment servicing hazards

Your staff and HP service personnel require safe access to the disk array. Running
electrical and data communication cables underneath your computer room’s raised floor
is the b

est way to ensure that they do not create a safety hazard.

Electrical hazards

The disk array equipment racks contain dangerous voltages. To prevent injury or death
from electric shock, refer all electrical installation and service to qualified personnel.

28 Site requirements

Space planning requirements

Space planning involves making sure that your computer room:

• Is large enou

gh to hold the new array and other equipment and furniture

• Provides clearance around the array for service access and to ensure proper

weight distribution on the computer room’s floor

• Includes cor

rectly positioned floor cutouts for the array’s power and data c ables

The space planning process

1. Document your computer room’s existing floor plan, including locations of these

items:

a. Im movable objects, such as structural support columns

b. Walls

c. All equipment, furniture, cabinets, racks, data comm equipment, and systems

d. Floor cutouts

e. Electrical outlets

f. Interconnecting cables and power cords, including lengths

g. Floor vents

2. Developanewfloor plan that includes the locations of all of the above items

plus the disk array and any new items added to support it. Include flexibility to
accommodate additional equipment as your requirements increase.

3. Implem ent the new floor plan, leaving empty space where the array will be

installed. If the new floor plan requires construction changes, consult with local
contractors and your HP representatives.

HP StorageWorks XP10000 Disk Array Site Prep Guide

29

Raised floor requirements

The computer room floor must be able to support the total weight of the equipment as
well as localized weight at each caster or foot of the equipment cabinets. A common
method of preparing an adequate floor for a computer room is to construct a raised
flooroverthebuildingfloor. A raised floor:

• Allows weight to be spread evenly across the floor

• Provides a

nunder-floor area for running interconnecting cables conveniently

and unobtrusively

• Allows optimum distribution of conditioned air

WARNING!

If metal is used in the construction of the raised floor, ensure that there is a common
ground co

nnection between the raised floor and main floor to avoid possible build

up of dif

ferent voltage potentials. Failure to comply can result in serious injury to

personnel and damage to equipment.

Requirements for raised floors:

• Raised floor access ramps must not exceed a 10 degree slope.

• Use a raised floorsystem(254to305mm,10to12inches)forthemost

favorable room air distribution system.

• Gridpanelsmustbeatleast450x450mm(17.72x17.72in).

• The floor must have a load rating between 300 and 500 kg per square meter

(553 to 921.7 lb per square yard, or 61.4 to 102.4 lb per square foot). The
maximum floor loading at any point is 500 kg (1102.3 lb) .

30 Site requirements

Estimating required floor load rating

To estimate the load rating you need for your floor, consider the total weight of all
of these items:

• Thediskarray;seetheprecedingComponent weights

• Other equipm

ent

• Furniture such as desks, chairs, and storage cabinets

• Computer room personnel

• Moving equi

pment such as forklifts, dollies, and similar items

The lower t

he floor load rating, the more clearance is required around the array to

distribut

e the equipment weight correctly. If your computer room is too small to allow

for minim

um required clearance around the array, you may need to increase the floor
load rating. For more on required clearance, see Floor clearance and cutout dimensions
later in this chapter.

Floor covering

HP recommends the use of a tiled raised floor.

CAUTION:

HP strongly discourages the use of carpeting, including antistatic varieties, within 6.0 m
(20 ft.) of the disk array. Over time, carpeting may shed dust that can cause problems
with the disk array.

CAUTION:

If your computer room has carpeting, place static discharge mats so that personnel
must walk across them before touching any part of the array. Failure to comply with this
precaution can result in equipment damage through static discharge.

HP StorageWorks XP10000 Disk Array Site Prep Guide

31

Floor clearanc

e and cutout dimensions

Figures on the following pages show the clearance dimensions, locations of floor cutouts,
and other dimensions for the primary and second racks.

Primary rack dimensions and c able cutout location

The following figure shows rack dimensions, clearances, and the cable cutout location.
The cutout may be off-center as long as it is within the area shown and corresponds
to the opening in the bottom of the cabinet to allow cables to pass through. See the
following pages for additional notes.

32 Site requirements

Calculating cl

earances

The total floor c

learance required for the disk array includes:

• The actual space required by the equipment.

• Service clearance — the floor space required to access the disk array. Never

use this space

for storage.

• Additional space required to properly distribute the equipment weight on your

computer room’s raised floor. The amount of additional space required depends
on your floor load rating.

HP StorageWorks XP10000 Disk Array Site Prep Guide

33

34

Site requirements

Calculate primary rack clearance dimensions as follows:

• Clearance “a” is the space between the service clearance at the left side of

the array (100 mm minimum for installing the kickplate) and any other object,
such as a desk or wall.

• Clearance “b” is the space between the service clearance at the right side of the

array (100 mm for the kickplate) and any other object.

• Clearance “c” is the space between the service clearance at the front of the

array and any other object.

• Usethevalueof“c”andyourfloor load rating to determine the values for a

and b according to the following steps.

1. Determine how much space you can assign to clearance “c”. For maintenance

purposes, try to make “c” larger (1000 mm) rather than smaller (0 cm). The
smaller “c” is, the larger “a” and “b” must b e.

2. In the following floor loading table, findthecolumnfor“c”thatmostclosely

matches your value. If your “c” value is in between two table values, use the
larger table value. Then, find the row for your floor load rating. Where the
column and row intersect is the a+b value.

3. To determine clearance “a” and clearance “b”, divide the a+b value between

“a” and “b”. They do not need to be equal. For example, if the a +b value
from the table is 600 mm, then “a” can be 400 mm and “b” can be 200, or
both “a” and “b” can be 300.

4. Calculate clearances by filling in and adding the table columns below:

Left
(add down)

Right
(add down)

Front
(add down)

Back
(add down)

Clearance
values

a _________

b _________

c _________

Not applicable

Plus minimum
service
clearance

100 mm (3.94
in)

100 mm (3.94
in)

1000 mm (39.4
in)

1000 mm (39.4
in)

Equal

stotal

clea

rance

HP StorageWorks XP10000 Disk Array Site Prep Guide

35

Primary rack cl

earance notes and floor loading

The following n

otes apply to preceding primary rack dimensional figures.

Note *1: Cleara

nce (a+b) depends on the floor load rating and clearance “c”. Required

clearances fo

rvariousfloor load ratings are shown below.

Required clearance (a + b) mm

Clearance (c) mm

Floorload

rating

(kg/mm2)

c = 0 c = 200 c = 400 c = 600 c = 1000

500 200 100 0.00 0.00 0.00

450

300 200 100 100 0.00

400 400

300 300 200 100

350 600 500

400 400

200

300 1000 800 700 600 500

Provide100mmofclearanceonbothsidesofthediskarraywhenthekickplatesareto
be attache

d after the disk array is installed. When disk arrays of the same type are to

be installed adjacent to each other, clearance between the arrays may be 100 mm.

Additional notes on primary rack floor loading and clearances:

• Decide actual clearances in consultation with the construction specialist

responsible for installation. They may vary depending on the size and layout of
the system and building conditions.

• When multiple disk arrays are arranged in a row, base your clearance values on

the requirements of the largest disk array.

• Generally, clearances (“c”) should be as large as allowable.

36 Site requirements

Primary and sec

ond rack clearance dimensions and cutouts

The following fi

gures show floor clearance dimensions when two racks are installed.

See also the ta

ble and text following the figures for notes and details. Clearances

for two racks

are calculated and recorded in the preceding table in the same way as

asinglerack.

HP StorageWorks XP10000 Disk Array Site Prep Guide

37

38 Site requirements

Primary and sec

ond rack clearance notes and floor loading

The following e

xplanatory notes apply to the preceding floor clearance drawings for the

primary and second rack.

*1: Clearance (a+b) depends on the floor load rating and clearance “c”. Required
clearances for various floor load ratings are shown below.

*2: Clearance between racks must be at least 10 mm. If the kickplate is installed after
rack placeme

nt, allow 100 mm.

Required clearance ( a + b) mm

Clearance (c) mm

Floorload

rating

(kg/mm2)

c = 0 c = 200 c = 400 c = 600 c = 1000

500 100 0.00 0.00 0.00 0.00

450

300 200 0.00 0.00 0.00

400

600

400

300 200 0.00

3501000800600500200

300 1600 1300 1100 900 600

Addition

al primary and second rack floor loading and clearance notes:

• Decide actual clearances in consultation with the construction specialist

responsi

ble for installation. They may vary depending on the size and layout of

the system and building conditions.

• When multiple disk arrays are arranged in a row, b ase your clearance values on

the requirements of the largest disk array.

• Genera

lly, clearances (“c”) should be as large as allowable.

HP StorageWorks XP10000 Disk Array Site Prep Guide

39

Environmental requirements

The environmental specifications for operating your dis k array must be satisfied before
installation.

Altitude

The maximum altitude for disk array operation is 3,000 meters. For nonoperational or
storage situations, the maximum altitude is 4,000 m eters.

Air conditioning

Use separate computer room air conditioning duct work. If it is not separate from the
rest of the building, it might be difficult to control cooling and air pressure levels. Duct
work seals are important for maintaining a balanced air conditioning system and high
static air pressure. Adequate cooling capacity means little if humidity levels increase
when the ducts are exposed to warm air, producing condensation. Condensation on
any disk

hardware can damage the components.

Any ques

tions regarding the adequacy of airflow construction should be referred to and

evalua

ted by a qualified structural engineer.

40

Site requirements

Temperature specifications

Temperature range type Range

Recommended operating temperature range 21 to 24 degrees C

70 to 75 degrees F

Operating tem

perature

16 to 32 degree

sC

61 to 89 degree

sF

Nonoperating temperature range

–10 to +43 degrees C
14 to 109 degrees F

Shipping and storage temperature (product
packed in factory packing)

–25 to +60 degrees C
–13to+140degreesF

Temperatur

e shock immunity (maximum rate

of temperat

ure change)

10 degrees C

per hour

18 degrees F

per hour

HP StorageWorks XP10000 Disk Array Site Prep Guide

41

Humidity specifications

Maintain proper humidity levels. High humidity levels cause galvanic actions to occur
between some dissimilar metals. This eventually causes a high resistance between
connections, leading to equipment failure.

Low humidity contributes to undesirably high levels of electrostatic charges. This
increases th

e electrostatic discharge (ESD) voltage potential. ESD can cause component

damage during servicing operations.

Low humidity levels are often the result of the facility heating system a nd occur during
the cold season. Most heating systems provide air with a low humidity level, unless the
system has a built-in humidifier.

You shou ld

not see any condensation in or around the disk array under any conditions.

There is no procedure for recovery from moisture condensation.

Humidity r

ange type

Nonconden

sing relative humid it y (RH)

Operating humidity range at 22 d e grees C
(71 degrees F)

20%to80%

Nonoperating humidity range

8% to 90%

Shipping and storage humidity range
(produ

ct packed in factory packing)

5% to 95%

Operating maximum wet bulb temperature 26 degrees C

79 degrees F

Nonoperating maximum wet bulb
temperature

27 degrees C
81 degrees F

Shipping and storage maximum wet bulb
temperature

29 degrees C
84 degrees F

42

Site requirements

Mechanical vibration specifications

Continuous vi

bration can cause a slow degradation of mechanical parts and, when
severe, can cause data errors in disk drives. Mechanical connections such as printed
circuit assembly (PCA) conductors, cable connectors, and processor backplane wiring
can also be affected by vibrations. Vibration specifications apply to all three axes. For
vibration te

sting methods, see ASTM D999-91 Standard Methods for Vibration Testing

of Shipping

Containers.

Condition

Specification

Operating 0.25 mm, 5–10 Hz

0.05 G, 10–300 Hz

Nonoperating

2.5 mm, 5–10 Hz

0.5 G, 10–70 Hz

0.05 mm, 70–99 Hz

1.0 G, 99–300 Hz

Shipping and storage (product packed in
factory packing)

0.5G,15minutes(atfourmostsevere
resonances between 5–200 Hz)

Shock specifications

The following tables lists shock specifications. For horizontal shock testing methods,
see ASTM D5277-92 Standard Test Methods for Performing Programmed Horizontal

Impacts Using an Inclined Impact Tester. For vertical shock testing methods, see ASTM
D6055-96 Standard Test Methods for Mechanical H andling of Unitized Loads and
Large Shipping Cases and Crates.

Condition

Specification

Operat

ing

None

Nonoperating

8G,15ms

Shipping and storage (product packed in
factory packing)

Horizontal: Incline impact: 1.22 m/s
Vertical: Rotational edge: 0.1 m

HP StorageWorks XP10000 Disk Array Site Prep Guide

43

Heat dissipation, power consumption, and air flow

The following table describes the heat dissipation and power consumption of the
XP10000 when loaded with the maximum number of disk drives.

Parameter

Primary Rack Second Rack Full array

Power consumption
(kVA)

4.

9

3.2 8.1

Heat dissipation
(kW)

4.6

3.0 7.6

BTUs per hour

15710 10246 25955

Kcal per ho

ur

39

59 2582 6541

Thetablebelowshowstheairflow requirements for the frames and disk chassis.

Product

No.

Description

Air flow

(cubic meters

per minute)

AE102A

HP X P1 0000 Disk Control Frame - DKC 15

AE104B

HP XP100

00 Disk Chassis

8

AE115B HP XP10000 Disk Array Frame 8

44

Site requirements

The following table presents the power requirements and heat dissipation of individual
components.

Product

No.

Description

Heat output

(kW)

Power

consumption

(kVA)

AE102A

HP XP10000 Disk Control Frame - DKC 0.738 0.761

AE105B

HP XP10000 16Port FC SW CHIP
8-Port ACP 0.370 0.381

AE006A

HP XP12000 /1000

0 16-port 2-Gb FC

CHIP

0.287 0.296

AE007A

HP XP120 00/10000 32-Port 2-Gb FC
CHIP

0.382

0.394

AE010A

HP XP120 00/10000 32-Port 4-Gb FC
CHIP

0.382

0.394

AE013A

HP XP12000/10

000 8-Port FICON

SW CHIP

0.346

0.356

AE014A

HP XP12000/10000 8-Port FICON
LW CHIP

0.346

0.356

AE015A

HP XP12000/10000 1 6-Port FICON
SW CHIP

0.35 0.361

AE016A

HP XP12000/

10000 16-Port FICON

LW CHIP

0.35 0.361

AE017A

HP XP12000/10000 16-Port EXSA
CHIP

0.313 0.323

AE018A

HP XP12000/10 000 8-Port 1-Gb NAS
SW CHIP

0.446 0.46

AE025A

HP XP12000

/10000 4-GB Cache

Memory

0.014 0.014

AE030A

HP XP12000/10000 1-GB Shared
Memory

0.011 0.012

AE110B HP XP10000 Battery 0.044 0.045

AE104B

HP XP10000 Disk Chassis

0.100 0.103

AE115B HP XP10000 Disk Array Frame 0.100 0.103

AE120A

HP XP10000 73GB 15k rpm Array
Group

0.088 0.096

AE121

A

HP XP10

000 146GB 10k rpm Array

Group

0.092 0.1

HP StorageWorks XP10000 Disk Array Site Prep Guide

45

Product

No.

Description

Heat output

(kW)

Power

consumption

(kVA)

AE122A

HP XP10000 146GB 15k rpm Array
Group

0.092 0.1

AE123B

HP XP10000 300GB 10k rpm Array
Group

0.092 0.1

AE120AS

HP XP10000 73GB 1

5k rpm Spare

Disk

0.022

0.024

AE121AS

HP XP10000 146GB 10k rpm Spare
Disk

0.023 0.025

AE122AS

HP XP10000 146GB 15k rpm Spare
Disk

0.023 0.025

AE123BS

HP XP10000 300GB 10k rpm Spare
Disk

0.023 0.025

Acoustics

The acoustic emission specification for the disk array is:

• 65 dB (A) so

und pressure, operator position (1 meter from the floor and surface

of the cabinet)

You can reduce the ambient noise level caused by equipment and air conditioning
blowers i

n your computer room by:

• Installing a dropped ceiling covered in commercial-grade, fire-resistant,

acoustic-rated, fiberglass ceiling tile

• Covering the walls in sound-deadening material

• Instal

ling foam rubber removable partitions

46

Site requirements

Dust and pollut

ion control

Airborne contaminants and particles of a certain size and hardness can damage the
disk array. Some of the most common contaminants are dust, smoke, ash, eraser debris,
food crumbs, a

nd salty air.

Mechanical filters on the disk array protect it by trapping large dust particles. Smaller
particles can pass through some filters, and can eventually cause problems in mechanical
parts. Prevent sm all dust particles from entering the computer room by maintaining its
air conditioning system at a high static air p ressure level.

Your HP representative can help you determine if you need to be concerned about
airborne c

ontaminants.

Metallic particulate contamination

Metallic particulates can be especially harmful a round electronic equipment. This type
of contamination may enter the data center environment from a variety of sources,
including but not limited to raised floor tiles, worn air conditioning parts, heating
ducts, rotor brushes in vacuum cleaners, or printer component wear. Because metallic
particulates conduct electricity, they have an increased potential for creating short
circuits in electronic equipment.

Over time, very fine whiskers of pure metal can form on electroplated zinc, cadmium, or
tin surfaces. If these whiskers are disturbed, they m ay break off and become airborne,
possibly causing failures or operational interruptions. For over 50 years, the electronics
industry has been aware of the relatively rare but possible threat posed by metallic
particulate contamination. During recent years, a growing concern has developed in
computer rooms where these conductive contaminants are formed on the bottom of
some raised floor tiles.

Although this problem is relatively rare, it may be an issue within your computer room.
Since metallic contamination can cause permanent or intermittent failures on your
electronic equipment, HP strongly recommends that your site be evaluated for m etallic
particulate contamination before installation of electronic equipment.

HP StorageWorks XP10000 Disk Array Site Prep Guide

47

Data comm requirements

Route data comm cables away from areas of high static electrical fields created by
power transformers and heavy foot traffic. Use shielded data comm cables that meet
approved industry standards to reduce the effects of external fields.

For the XP disk

array, you need:

Item

Description

A dedicated analog
phone line

Needed for the HP StorageWorks Continuous Track XP “phone
home” feature, if you plan to use it. An HP representative will
configure Continuous Track XP during installation. For more
information on Continuous Track XP, see the HP StorageWorks
XP10000 Disk Array Owner’s Guide.

A twisted pair (Cat 5)
cableAn available LAN
drop on your Intranet

Needed to connect the XP10000 to an available Ethernet
port on your p ublic LAN. To ensure network security, consult
with an HP representative and your network administrator
before selecting the appropriate location of your LAN drop.

Apublicvoicephoneline
near the disk array

Needed to allow your staff and HP representatives to
communicateinsideandoutsideyoursite.

48

Site requirements

Electrical requirements

Line voltage

Linevoltage(AC)atthewallpoweroutletisafunctionofthelocalpowerutilityandyour
building power distribution network. Voltages outside of the operating range of the disk
array can cause intermittent system errors or a complete system shutdown. If required,
an HP representative and your electrician can determine the current line voltage and
make recommendations. See "

Chapter 3 Electrical specifications" for specificACline

voltage requirements.

Avoid the use of a line voltage conditioner.

Make sure that a power distribution unit (if used) provides the c orrect voltage to support
your entire system.

Branch circuit breakers

See "Chapter 3 Electrical specifications" for specific branch circuit requirements for
your pow

er situation.

Single-phase branch circuit breakers

The power cords supplied are specified for connection to a single-phase, 20-amp circuit.

Frequency

Usuall

y, AC line frequency is determined by your local power providers. In some cases,
electrical power is supplied by generators. Shifts in AC line frequency can cause system
errors. An HP representative can monitor the frequency of the input AC line power and
make recommendations, if necessary. The disk array requires that the line frequency be
withi

n 0.5 Hz of the rated line frequency (50 Hz or 60 Hz). See "

Chapter 3 Electrical

specifications" for more information.

Safety and dedicated ground

The primary reason for grounding electrical systems is safety. The safety ground is
required by the National Electric Code (USA) and most other local, regional, and
national codes. In addition to safety ground, HP requires that a dedicated (earth
reference) ground be installed as a common reference point for all system components.
Consult with an HP representative and your electrician to ensure that your electrical
system meets all lo cal and national safety codes.

HP StorageWorks XP10000 Disk Array Site Prep Guide

49

Grounding requirements

Your site’s electrical subsystem must meet all of the following co nditions:

• Grounding as presc

ribed by your local country codes.

• An insulated grounding conductor that is identical in size and insulation material

and thickness to the ungrounded branch-circuit supply conductors. It should be
green, with or without yellow stripes, and is to be installed as a part of the
branch circuit t

hat supplies the unit or system. This means the ground conductor
must be run in the same conduit, armored cable, or other cable bundle as the
phase wires.

• The grounding c

onductor should be grounded to earth at the service equipment

or other accep

table building earth ground such as the building frames (in case
of a high-rise

steel-frame structure).

• IT-configured grounding systems are not certified for use with the disk array as

these grounding systems may not h ave solidly conductor-connected grounded
power systems and/or they may have resistive imp e dance inserted in ground
and/or neutral lines. The disk array requires a solidly conductor-connected
ground and

may require a separate neutral in the case of WYE or STAR

connectio

ns. For HP disk arrays, TN grounding systems are preferred.

AC connections

The disk array primary rack has four sepa rate connections to 200 VAC, single-phase,
20-amp power.

The second rack has two connections to AC power in the minimum configuration (four
recommended) and four connections to AC power in the maximum configuration. Power
requirements are 200 VAC, single-phase, 20-Amps.

When receptacles are used to connect disk array components to AC power, they must
include a dedicated ground connection that is insulated from the receptacle. It is
important that the receptacle box be g rounded with an additional ground connection
that is separate from the dedicated ground. The additional ground can be hard conduit.

Specific AC power cords and plugs are available to suit the power requirements and
receptacles in your location. You can specify the cords and plugs you need when you
order the HP XP10000 disk array. You are responsible for having the correct plugs and
receptacles installed by an electrician in compliance with local electrical requirements
and practices.

50 Site requirements

CAUTION:

When installing the receptacles, the electrician must ensure that each receptacle has its
own neutral (if required) and ground. Using the same neutral/ground for more than one
circuit causes voltage loss and heat problems and can create a fi re hazard. A shared
neutral conductor that fails open-circuit can cause overvoltage damage to equipment.

See "Chapter 3 Ele ctrical specifications" for specific power requirements as well as plug
and receptacle pa rt numbers and ordering information.

Power line transients

Heavy electrical loads from nearby machinery or e quipment (for example, elevators or
electric welders) can cause intermittent system problems with sophisticated electronic
equipment, even if that equipment is on a separate circuit breaker. When faced with
these conditions, provide a separate, completely independent power panel with an
isolated ground an d circuit breaker coming directly from the main building power source
or secondary power source.

If necessary, an HP representative can measure your power line noise level and ma ke
appropriate recommendations concerning the use of line treatment devices.

Protection against sources of electrical interference

Protect the disk array from sources of electrical interference:

HP StorageWorks XP10000 Disk Array Site Prep Guide

51

Potential source

Description

Wall outlets

Convenience power outlets for building maintenance equipment
(such as vacuum cleaners and floor buffers) must be wired from circuit
breakers on a power panel separate from the computer system panel.
The ground wires from these outlets must be connected to the normal
building distribution panel and not to the system ground.If a separate
power source and separate ground are not provided, operation of
janitorial equipment can induce electrical noise and cause abnormal
operation of the computer system. Your electrician can verify whether
maintenance outlets are on separate panels.

Lightning In geographical areas subject to lightning storms, it may by advisable

to install l

ightning protection for both personnel and computer
systems. The principles of lightning protection and personnel safety
areoutlinedindetailinthelightningprotectioncodecontainedinthe
National Fire Protection Association (NFPA) Handbook.

Electromagnetic
interference

The disk array is specifically d esigned to reduce its susceptibility to
radiated and conducted interference. Electromagnetic interference
can cause a variety of system problems. An HP representative can
advise you about the most common causes of electromagnetic
interference.

Uninterruptible power supply (UPS)

Most disk array units are installed in data centers where a UPS strategy is already in
place. However, if you are making your first large disk array purchase, you may need
a separate UPS solution.

CAUTION:

If you are planning or already have a site-wide UPS, HP recommends against using a
product UPS powered by a site-wide UPS for the XP10000.

Make sure your UPS satisfies the power requirements listed u n der Heat dissipation

and power consumption in this chapter and also under AC line voltage requirements

in Chapter 3.

52 Site requirements

3Electricalspecifications

The detailed electrical specifications in this chapter are provided to help your site
electrician perform any necessary electrical work related to site prep.

AC line voltage r

equirements

The AC power requ

irements are essentially the same for both the primary and the
second racks. Each rack operates on 200 VAC nominal, 20 amps, 50 or 60 Hz,
single-phase power. An independent branch circuit and circuit breaker is required
for each AC input power cord.

The following

table lists specific power requirements.

Parameter

200

VAC

208

VAC

220

VAC

230

VAC

240

VAC

Minimum operating voltage
(VAC)

184

191 202 212 221

Maximum operating voltage
(VAC)

212 220 233

244 254

Rated line current per power
cord

16A 16A 16A 16A 16A

Number of power cords

44444

Recommended circuit breakers

20A 20A 20A 20A 20A

Number of c

ircuit breakers

44444

Important notes:

208 VAC is

60 Hz only. Rated line current per power cord is the maximum allowable
current under worst case conditions. This value applies to each individual power cord
and is specified in RMS amperes. For the second rack, four power cords and circuit
breaker

s are strongly recommended even though a minimum configuration containing

only one

expansion disk chassis requires only 2 power cords and 2 circuit breakers. If
a second expansion disk chassis is added to the second rack, four power cords and
four circuit breakers are required.

HP StorageWorks XP10000 Disk Array Site Prep Guide

53

AC inputs

The disk array

primary rack has four separate connections to 200 VAC, single-phase,

20-amp power

. The AC power inputs to the primary rack are distributed to four power
distribution units (PDUs) as shown in the following figure. This provides fault tolerant
operation of the disk array. Each pair of AC inputs (00/10 and 01/11) must be
capable of supporting the entire current demand for the cabinet. Each PDU is fitted with
an IEC320-C20 inlet that fits the supplied input power cord, and four IEC320-C13
outlets th

at connect to the hardware inside the rack by means of supplied cables.

CAUTION:

The four PDU outputs shown in the figures a re for internal power connections to the
disk array only. Do not connect any other equipment to these outlets. Usin g the outlets
for any equipment other than the disk array may compromise disk array reliability
or availability .

Thesecondrackshowninthefollowingfigure has four connections to AC power. Power
requirements are 200 VAC, single-phase, 20-Amps.

54

Electrical specifications

HP offers the following AC power cables and connectors, which you can order
individually (four each are required per primary or second rack):

• E7805A HP 4.5 m power cord w/NEMA L6-30P plug

• E7806A HP

4.5 m power cord with stripped ends

• E7808A HP 2 40 V power cord w/ IEC 309 plug, 4.5 m

• E7809A HP 240 V power cord w/ CEE7/7, 4.5 m

• E7810A H

P power cord for China

• E7811A HP power cord for Israel

• E7804A HP power cord, 4.5 m, C19/C20 Plug (jumper for UPS)

• E7798A

cord w/IEC 320-C20 connector and 2.5 m jumper for UPS

You can supply your own power cables as long as they meet a 20 amp rating, fitthe
IEC320-C20 PDU inlets, and me et lo cal codes.

HP StorageWorks XP10000 Disk Array Site Prep Guide

55

NorthAmericanACpowercabling

The XP10000 racks each require 20-amp, single-phase 200 VAC power supplied by
four power cords with p lugs, four receptacles, and four main disconnect devices (circuit
breakers). If the second rack contains only one disk chassis, only two power cords and
breakers ar

e required, but four are required if you plan to add another disk chassis.

The XP10000 comes from the HP factory with the AC power cords and plugs you have
ordered. Plug types rated for 30 Amps are specified under the heading, AC inputs
earlier in this chapter. The opposite end of the power cord connects to the XP10000
power distribution unit input, which is a type IEC320 C20 connector.

Connect ea

ch AC power cable to a separate receptacle on a separate circuit breaker,
and connect each pair of power cords (the left pair and the right pair) to separate
distribution panels to ensure power fault tolerance.

CAUTION:

Do not apply power until instructed to do so by HP. An HP representative should be
present

whenever the disk array is being connected to a new power source.

Branch circuit requirements

To protect the disk array, your building must be wired correctly. Each supply ( “hot”)
conductor must be protected by a short-circuit protective device and by an overcurrent
protective device. The table listed under AC line voltage requirements provides
specifications for the overcurrent protective devices required for single-phase operation.

All protective devices must comply with national standards of the country where the
units are to be installed. If a protective device interrupts any supply conductor, it must
also interrupt all other supply conductors.

56

Electrical specifications

European AC power cabling

The XP10000 racks each require 20-amp, single-phase 200 VAC power supplied by
four power cords with plugs, four receptacles, and four main disconnect devices (circuit
breakers). If the second rack contains only one disk chassis, only two power cords
and breaker

s are required, but four are recommended if you plan to add another disk

chassis later.

The XP10000 comes from the H P factory with the AC power cables and plugs or
stripped ends you have ordered. Plug types are specified under the heading, AC inputs.
The opposite end of the power cord connects to the XP10000 power distribution unit
(PDU) inp

ut, which is a type IEC 320-C20 connector.

European branch circuit requirements

To protect the disk array, your building must be wired correctly. Each supply (“hot”)
conductor must be protected by a short-circuit protective device and by an overcurrent
protective device. The table listed under AC line voltage requirements provides
specifications for the overcurrent protective devices required for single-phase operation.
All protective devices must comply with national standards of the country where the
units are to be installed. If a protective device interrupts any supply conductor, it must
also interrupt all other supply conductors.

Overcurrent protection is also required for the neutral conductor.

Your electrician should know the appropriate code requirements for your location/site
and wire power distribution to the XP10000 accordingly.

HP StorageWorks XP10000 Disk Array Site Prep Guide

57

Connecting the

European power-supply cables

Connect each AC power cable to a separate receptacle on a separate circuit breaker,
and connect each pair of power cords (the left pair and the right pair) to separate
distribution panels to ensure power fault tolerance. Sing l e-phase power cable wiring is
showninthefigure below.

CAUTION:

Do not apply

power until instructed to do so by HP. An HP representative should be

present whenever the disk array is being connected to a new power source.

CAUTION:

Be sure to connect the power cords to the distribution panel as shown in the figure.
Improper wiring of the neutral conductor may cause damage to the disk array. To
reduce the risk of a wrong connection, use a plug and socket that are approved for
this disk array. It is your electrician’s responsibility to select and install the proper
plugs and receptacles.

WARNING!

High leakage current can occur between the power supply and the unit. To avoid
electrical shock, be sure to make the protecti ve earth connection before the supply
connections.

58

Electrical specifications

4 Delivery and un packin g

The disk array equipment is shipped directly from HP. If the disk array is part of a system
order, HP coordinates shipment from all HP locations so that all of the equipment arrives
at your site at approximately the same time.

When your equipment ships, HP p rovides you with carrier information and an expected
delivery date. Factors beyond HP’s control can cause delivery delays. If you have not
received your equipm ent within two weeks of its shipment from HP, contact your HP SR,
who will trace your order and expedite delivery.

CAUTION:

Before delivery, make sure your site meets the requirements explained under the
heading, “Delivery space requirements”.

HP StorageWorks XP10000 Disk Array Site Prep Guide

59

Checking for shipping shortage and damage

Upon delivery of each equipment shipment:

1. Check the carrier’s bill of lading to ensure that the items listed match the item s

delivered. Notify the carrier immediately if there are any discrepancies or missing
items.

2. Inspect all shipping containers for signs of damage, such as dents, scratches, cuts,

or water ma rks.

3. If you see an

y damage to the containers:

a. Note on the bill of lading that there is apparent damage, subject to inspection.

b. Arrange for the carrier’s representative and an HP representative to be present

when the item in question is unpacked.

c. Contact y

our HP representative, who will make sure any damaged components

are repl

aced, regardless of the circumstances and without waiting for any

claim settlements.

Unpacking the equipment

HP representatives will supervise the unpacking and moving of the disk array equipment.
It is your responsibility to provide the people, tools, and equipment necessary to perform
these tasks.

Requi

red personnel

HP re

commends that three physically able personnel be available to assist with
off-loading the disk array equipment from the pallet. Personnel must be knowledgeable
and experienced with the safe handling of large, heavy, and sensitive computer
equipment.

Required tools

• Claw hammer (if full packaging with wooden crate)

• Ratchet wrench or box-open end wrench sizes 11mm (7/16") and 19mm (3/4"),

or adjustable end wrench

• 6mm hex wrench

• Scissors or box knife to cut polyester banding

• Safety glasses

• Short stepladder (helpful, but not required)

60

Delivery and unpacking

Packaging configurations

XP disk array cabinets are shipped in one of three standard packaging configurations:

• Environmental pack — consists of stretch wrap over corner protectors. No

special tools

or procedures are required to unpack shipments in this form. This
packaging is used for most shipments within the USA and Canada that are direct
from the factory to the customer. HP uses special carriers with a de dicated fleet
of trucks and specially trained personnel.

• Full packag

ing — consists of a pallet, wooden loading ramp, inner packaging,

and outer corrugated carton assembly.

• Full packaging with wooden crate — consists of full packaging encased in a

wooden cra

te.

Unpacking process

If you need to unpack the equipment without HP supervision, follow the instructions
in this section.

1. Following the steps “Removing packaging materials”, unpack the equipment cartons

outside of the computer room to avoid debris and possible contamination of the
computer room environment.

2. For software CDs, cables, and other installation hardware, leave the sealed cartons

or packages intact. HP representatives will unpack them when they install and
configure the disk array.

3. As you unpack the cartons, match the delivered items to the packing list (invoice) for

each carton. Contact your HP SR imm e diately if any items are missing or are not
the ones you ordered.

4. Move all equipment to the computer room before the installation date.

HP StorageWorks XP10000 Disk Array Site Prep Guide

61

Safety precautions

CAUTION:

Be very careful when handling the equipment. Do not drop the equipment from a
height of more than 0.5 cm (0.2 in). Floor unevenness must be less than 1 cm (0.4 i n).

WARNING!

The equipme nt frames are very heavy. To avoid injury, use appropriate lifting tools
and have three people unpack and move the equipment.

CAUTION:

Anymovementoftheequipmentbyforkliftshouldbedonepriortounpacking. The
cartonassemblyprovidesthemostsecuresupportoftheequipmentduringmovement.
Transporting the equipment by forklift after the packaging carton has been removed is
not advisable.

CAUTION:

Equipment racks are top heavy

and contain very sensitive electronic and mechanical
components. Whenmovingonframecasters,therollingsurfacemustbeableto
support the equipment weight and must be free of surface conditions that could cause
shock or vibration to the cabinet contents. Avoid pushing the racks from behind
because they may tip over. Instead, pull the racks from the front to roll them. Be careful
when pulling the rack that it doesn’t tip toward you or fall on you, causing injury.

WARNING!

When using sharp objects or cutting tools, make sure that no part of your body lies in
the path of the blade bit or point.

CAUTION:

When disk array equipment is not located in a data center or computer room, it
mustbestoredinacontrolledareathatmeetsenvironmentalrequirements(see
“Environmental requirements”).

62

Delivery and unpacking

Removing packa

ging materials

The primary rac

k is labeled DKC AE102A. If you ordered a two-rack system, unpack
the primary rack first because it c onta ins the wooden ramp you will use to unload both
equipment racks.

1. If shipped in a

wooden crate:

a. Using an 11mm (7/16") ratchet or wrench, remove the six lag screws at the

base of the crate.

b. Using the claw end of a claw hammer , remove the crate clamps.

WARNING!

Crate clamps are under tension. Wear safety glasses and hold onto
the clamp with your free hand during removal.

c. Remove the crate panels.

HP StorageWorks XP10000 Disk Array Site Prep Guide

63

2. Cut and remove the polyester bands.

3. Remove the nails attaching the carton to the pallet.

4. Remove the plastic carton fasteners (p-fasteners).

5. Remove the carton.

64

Delivery and unpacking

6. Remove the accessory boxes, ramp, and corner pads.

7. Using a 6mm hex and 19mm wrench, remove the adapter plates that anchor the

cabinet to the pallet.

8. Remove the poly bag covering the cabinet.

9. Following the instructions provided on the wooden ramp, attach t he ramp to the

pallet and roll the cabinet onto the floor.

10. Visually check the unit for any damage.

HP StorageWorks XP10000 Disk Array Site Prep Guide

65

66

Delivery and unpacking

Glossary

ACP Array control processor. On some XP models, such as the

XP12000, the ACP handles the passing of data between the
cacheandthephysicaldrives. OnotherXPmodels,suchas
the XP10000, this function is handled by the disk adapter on
the MIX board.

AL Arbitrated loop.

AL-PA Arbitrated loop physical address.

allocation The ratio of allocated storage capacity versus total capacity as

a percentage. “Allocated storage” refers to those LDEVs that
have paths assigned to them. The allocated storage capacity is
the sum of the storage of these LDEVs. Total capacity refers to
the sum of the capacity of all LDEVs on the disk array.

array group A group of 4 or 8 physical hard disk drives (HDDs) installed in

an XP disk array and assigned a common RAID level. RAID1
array groups consist of 4 (2D+2D) or 8 HDDs (4D+4D). RAID5
array groups include a parity disk but also consist of 4 (3D+1P)
or 8 HDDs (7D+1P). All R AID6 array groups are made up of
8 HDDs (6D+2P).

ASE Application System Engineer.

BC TheHPStorageWorksBusinessCopyXPsoftwareprogram,

which enables you to maintain up to nine internal copies of
logical volumes on the disk array.

C-Track The HP StorageWorks Continuous Track XP software program,

which detects internal hardware component problems on a disk
array and automatically reports them to the HP STC.

CA TheHPStorageWorksContinuousAccessXPprogram,which

enables you to replicate data stored on a local disk array to a
remote disk array.

cache Very high speed m emory that is used to speed I/O transaction

time. All reads and writes to the XP array family are sent to
the cache. The data is buffered there until the transfer to/from
physical disks (with slower data throughput) is complete.

HP StorageWorks XP10000 Disk Array Site Prep Guide

67

The benefit of cache memory is that it speeds I/O throughput
to the application. The larger the cache size, the greater
the amount of data buffering that c an occur and the greater
throughput to the applications.
XP arrays support a range of cache m emory. In the event of
power loss, battery power holds up the contents of cache for
up to 36 hours.

CE Customer engineer.

channel adapter
(CHA)

The channel adapter (CHA) provides the interface between
the disk array and the external host system. Occasionally this
term is used synonymously with the term channel host interface
processor (CHIP).

channel host in­terface processor
(CHIP)

Synonymous with the term channel adapter (CH A) .

channel processor
(CHP)

The processors located on the channel adapter (CHA).
Synonymous with CHIP .

command device A volume on the disk array that accepts Continuous Access

or Business Copy control operations which are then executed
by the disk array .

control unit To organize the storage space attached to the D KC, you can

group similarly configured logical devices (LDEVs) with unique
control unit images (CUs). CUs are numbered sequentially. The
disk array supports a certain number of CUs, depending on
the disk array model. Each CU can m

anage multiple LDEVs.

Therefore, to uniquely identif

y a particular LDEV requires both

the CU number and the LDEV number.

CU Control unit.

CVS Custom volume size. CVS devices (OPEN-x CVS) are custom

volumes configured using array management software to
be smaller than normal fixed-size OPEN system volumes.
Synonymous with volume size customization (VSC).

disk adapter
(DKA)

Synonymous with the term ACP.

disk unit (DKU) The array hardware that houses the disk array physical disks.

disk controller
(DKC)

The array hardware that houses the channel adapters and
service processor (SVP).

68

Glossary

disk recovery and
restore unit (DRR)

The unit responsible for data recovery and restoration in the
event of a cache failure.

disk group The physical disk locations associated with a parity group.

disk type The manufacturing label burned into the physical disk controller

firmware. In most cases, the disk type is identical to the disk
model number.

emulation modes The logical devices (LDEVs) associated with each

RAID group are assigned an emulation mode that
makes them operate like OPEN system disk drives.
The emu lation mode determines the size of an LDEV.

OPEN-3: 2.46 GB
OPEN-8: 7.38 GB
OPEN-9: 7.42 GB
OPEN-E: 13.56 GB
OPEN-K: Not available on this array
OPEN-L: 36 GB
OPEN-M: Not available on this array
OPEN-V: User-defined custom size

EPO Emergency power off.

ESCON Enterprise System Connection (the IBM trademark for optical

channels).

expanded LUN A LUN is normally associated with only a single LDEV. The

LUSE feature allows a LUN to b e associated with 1 to 36
LDEVs. Essentially,

LUSE makes it possible for applications
to access a single large pool of storage. The LUSE feature
is available when the HP StorageWorks LUN Configuration
Manager product is installed.

ExSA Extended serial adapter.

failover Disconnecting a failed unit or path and replacing it with an

alternative unit or path in order to continue functioning.

FC Fibre Channel.

FC-AL Fibre Channel arbitrated loop.

FCP Fibre Channel Protocol.

fence level A level for selecting rejection of a write I/O request from the

host according to the condition of mirroring consistency.

FICON IBM mainframe Fiber Optic Connection.

HP StorageWorks XP10000 Disk Array Site Prep Guide

69

GB Gigabytes.

GLM Gigabyte link module.

HA High availability.

HBA Host bus adapter. A built-in function or a card installed in a

PC or other host compute

r to enable connection of the host to

the SAN.

host mode Each port can be configuredforaparticularhosttype. These

modes are represented as two-digit hexadecimal numbers. For
example, host mode 08 represents an HP-UX host.

hot standby Using two or more ser vers as a standby in case of a primary

server failure.

HP Hewlett-Packard Development Company.

I/O Input/output (applies to an operation or device).

LAN Local area network.

LD, LDEV Logical device. An LDEV is created when a RAID group is

carved into pieces according t

otheselectedhostemulation

mode (that is, OPEN-3, OPEN-

8, OPEN-9). The number of
resulting LDEVs depends on the selected emulation mode. The
term LDEV is often used synonymously with the term volume.

LED Light emitting diode.

local disk A disk in the host.

LU Logical unit.

LUN Logical unit number. A LUN results from mapping a SCSI

logical unit number, port ID, and LDEV ID to a RA I D group.
The size of the LUN is determined by the emulation mode of
the LDEV, and the number of LDEVs associated with the LUN.
For example, a LUN associated with two OPEN-3 LDEVs has a
size of 4,693 MB.

LUSE Logical unit size expansion. See also Expanded LUN.

m Meters.

MB Megabytes.

MCU Main control unit.

70

Glossary

MIX A circuit board in the disk control unit that includes disk

adapters and channel adapters for interfacing disk drives and
the host to cache memory.

mirroring consis­tency

The consistency (usability) of data in a volume (for example,
S-VOL).

mm Millimeters.

MR Magnetoresistive.

ms, msec Milliseconds.

mutual hot
standby system

Two servers that are poised to cover for each other if nec essary.

NAS Network attached storage.

node Logically speaking, an environment where instances can b e

executed. Physically,aprocessor,whichisanelementofa
cluster system.

NVS Nonvolatile storage.

OFC Open Fibre Control.

OLM Optical link module.

OS Operating system.

PA Physical address.

parity group A parity group is a disk configuration in which multiple disks

work together to provide redundancy. Synonymous with “array
group.”

partition Dividing a specificphysicaldiskintotwoormoreareasasif

there are two or more physical disks.

path Paths are created by associating a port, a target, and a LUN

ID with one or more LDEVs.

PCI Power control interface or peripheral component interconnect.

port A physical connection that allows data to pass between a

host and the disk array. The number of ports on an XP disk
array depends on the number of suppor ted I/O slots and the
number of ports available per I/O adapter. The XP family of
disk arrays supports Fibre Channel (FC) ports as well as other
port types. Ports are named by port group and port letter, such
as CL1-A. CL1 is the group, and A is the port letter.

HP StorageWorks XP10000 Disk Array Site Prep Guide

71

P-P Point-to-point.

primary rack The XP10000 rack that contains the basic disk array

components, including the controller and one disk chassis. The
primary rack can contain a second optional disk chassis.

PS Power supply.

RS Russellstoll®, a brand of electrical plugs and receptacles

manufactured by Thomas & Betts Corporation.

RAID Redundant array of independent disks.

RAID group See “array group.”

RAID level A RAID Level is one of the ways that disk drives are grouped

together to improve performance, data availability/reliability
or both. RAID levels are defined from RAID0 to RAID6. HP
StorageWorks Disk Arrays in the XP product family support
RAID1, RAID5 and RAID6. Not all of these RAID levels are
supported by all XP family members. Consult the owner’s guide
or your HP representative for the details of which RAI D levels
are supported by your specificXPdiskarray.

RAM Random access memory.

RM HP StorageWorks RAID Manager XP, a command line interface

for managing XP arrays.

R-SIM Remote service information message.

R/W, r/w Read/write.

script file A file containing a shell script.

SCSI Small computer system interface.

second rack The optional second XP10000 disk array rack that contains up

to two additional optional d isk chassis (up to 120 drives).

shell script A command sequence executed by a UNIX shell.

sidefile An area of cache used to store the data sequence number,

record location, record length, and queued control information.

SIM Service i nformation message.

SMI-S Storage Management Initiative Specification.

SMS System managed storage.

SNMP Simple Net work Management Protocol.

72

Glossary

SSID Storage subsystem identification.

STC HP Storage Technology Center.

SVP Service processor, which is the PC built into the disk controller.

The SVP provides a direct interface into the disk array. SVP use
is reserved for HP support representatives only.

TB Terabyte.

TCP/IP Transmission control protocol/Internet protocol

TID Target ID.

VSC Volume size customization. Synonymous with CVS.

VOLID Volume ID.

volume Synonymous with LDEV.

HP StorageWorks XP10000 Disk Array Site Prep Guide

73

74

Glossary

Index

A

AC

plugs,55

power,54
acoustics,46
additional components,21
air conditioning,40

and metallic particulate

contamination,47

dust control,47
air pressure,26,40,47
airborne contaminants,47
altitude,40
antistatic

carpeting,31

containers,27

floor wax,27

flooring,27

furniture,27
audience,6

B

basic configuration,18
branch circuit requirements,56,57
breakers,49,53
building codes,26,28,49

C

cables,29,55

as safety hazards,28

Cat 5,48

floor cutouts for,32

in floor plans,29

mechanical vibration,43

power,53

raised floors,30

routing,48

sealing,26

shielded,48

unpacking,61
circuit breakers,49,53
clearances,32
components, additional,21
computer room

air pressure,26

data comm requirements,48

electrical requirements,49

environmental requirements,40

general requirements,26

vapor barrier,26

windows,26
conductive

flooring,27

furniture,27

wax,27
conventions, document,
cords,55

power,53
current,53
customer, site prep responsibilities of,

12

D

damage, shipping,60
data comm requirements,48

See also cables,48
delivery

equipment,59

space requirements,25
dimensions,20
disk array

acoustic specifications,46

basic configuration,18

delivery of,59

dimensions,20

electrical specifications,53

heat dissipation,44

HP StorageWorks XP10000 Disk Array Site Prep Guide

75

humidity specifications,42
power connections,50,54
power consu mption,44
primary rack,18
second rack,18
unpacking,60

vibration specifications,43
disk chassis,18
disk controller,18
document,6
document conventions,
documentation, HP web site,6
dust control,47

E

earth ground,49,58
electrical requirements,49
electromagnetic interference,52
environmental requirements,40
equipment servicing hazards,28
ESD,27,42

F

fire safety,28
floor

clearances,32

conductive,27

covering,31

cutouts,29,32

earth grounding,27

grid panels,30

grounding,27,30

tiles, and metallic particulate

contamination,47

waxed,27
floor plan,29
frequency,49
furniture, conductive,27

G

grid panels, floor,30
grounding,49,50,58

H

hazards, servicing,28
heat dissipation,44
help

obtaining,8
help, obtaining, 12, 13
HP

storage web site,9

Subscriber’s choice web site,8

technical support,8
HP representatives

airborne contaminants,47

and electrical requirements,49

building construction,29

Continuous Track XP,48

electrical requirements,49

electromagnetic interference,52

equipment delivery,16,60

equipment unpacking,60

network security,48

power connections,56,58

power line transients,51

site prep checklist,14

site prep team, 11, 12

site safety,28
HP SR, 12, 13, 59, 61
humidity,40,42

and ESD,27

L

LAN connection,48
lightning,52
line current,53
line voltage,49

M

mechanical vibration specifications,43
metallic particulate contamination,47
moisture,26

N

noise level,46

76

O

operating voltages,53

P

particulate contamination, metallic,47
phone home,48
phone line,48
physical specifications,18
plugs

AC,55
pollution control,47
power

AC connections,54

cables,55

consumption,44

cords,53,55

UPS,52
power cords

floor cutouts for,32
power line transients,51
primary rack,18

R

rack stability

warning,8
racks,19

described,18
raised floor,29,30

See also floor,30
receptacles,50
related documentation,6
representatives, of HP. See HP
representatives,12

S

safety,28,28
sales representative. See HP SR,61
second rack,18
service clearance,29
servicing hazards,28
shipping damage,60
single phase cabli ng

Europe,57

North America,56

site prep

checklist,14
customer responsibilities,12
objectives,11
resources,11
tasks,13
team,12

time allowances,16
sound pressure,46
space

delivery,25

planning,29
specifications,18

acoustic,46

heat,44

humidity,42

power,44

vibration,43
SR. See HP SR,61
static

discharge mats,31

preventing,27
Subscriber’s choice, H P ,8
symbols in text,7

T

technical support

HP,8
text symbols,7
transients, power,51

U

uninterruptible power supply (UPS),52
unpacking equipment,60
UPS,52

V

vapor barrier,26
vibration specifications,43
voltages,53

W

warning

HP StorageWorks XP10000 Disk Array Site Prep Guide

77

rack stability,8
wax, conductive,27
waxed floors,27
web sites,6

HP documentation,9

HP storage,9

HP Subscriber’s choice,8

weights, 20, 21

calculating,23
wet bulb temperature,42
windows, in the computer room,26

78