clsetup

CLARiiON Setup GuideEMC Replication Manager

Release 2.0.0

January 2003 Rev A01

EMC Replication Manager

EMC Corporation, 171 South St., Hopkinton, MA 01748-9103Corporate Headquarters: (508) 435-1000 (800) 424-EMC2

Fax: (508) 435-5374 Service: (800) SVC-4EMC

CLARiiON Setup Guide: EMC Replication ManagerRelease 2.0.0Rev A01January 2003Copyright © 2003 EMC Corporation. All rights reserved.

EMC Corporation, 171 South St., Hopkinton, MA 01748-9103

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EMC Replication Manager CLARiiON Setup Guide

Contents

PrefaceWho Should Read this Guide ................................................................. viRelated Documentation .......................................................................... viConventions ........................................................................................... viWhat if I Need Setup Assistance .......................................................... viiPowerLink Web Site ............................................................................. viiReader Comments ................................................................................ viii

Chapter 1 Getting StartedCLARiiON Setup Checklist ..................................................................... 2

Chapter 2 Storage Array ArchitectureSupported CLARiiON Storage Arrays .................................................... 6CLARiiON Hardware and Software Configurations ............................... 7

Minimum Required Hardware and Connectivity ...................... 7Minimum Required Software for the CLARiiON Array .......... 7Minimum Required Software for All Hosts .............................. 7Minimum Required Software for Client Hosts ......................... 8

CLARiiON Storage Array Logical Components ..................................... 9Supported RAID Groups .................................................................. 9Logical Units (LUNs) ..................................................................... 10

Chapter 3 Storage Array and Client PreparationSetting Up Clients to Use CLARiiON Storage Arrays .......................... 12

Install Software on the Client ......................................................... 12Update the CLARiiON Configuration File ..................................... 12Grant Client Login Privileges ......................................................... 13

iv

Contents


Update the sd.conf Entries for Dynamic Mounts ........................... 15Update the Navisphere Host Agent Configuration File ................. 15

Planning Your CLARiiON Drive Configuration ................................... 18What is a Replica on the CLARiiON? ........................................... 18Planning Replica Storage Needs .................................................... 18

Managing RAID Groups, LUNs, and Storage Groups ......................... 21Configuring RAID Groups ............................................................. 21Creating LUNs and Binding Them to RAID Groups .................... 21Assign LUNs to the Storage Groups .............................................. 22

Creating the “EMC Replication Storage” Storage Group ...... 23Creating Storage Groups for Production Hosts ...................... 23Creating Storage Groups for Mount Hosts ............................. 24

Exposing Selected Storage to Clients ............................................ 24


Preface

This EMC Replication Manager CLARiiON Setup Guide documents how toprepare the following series of EMC CLARiiON storage arrays for use with Repli-cation Manager:

• CLARiiON FC4700 Series storage arrays

• CLARiiON CX600 Series storage arrays

• CLARiiON CX400 Series storage arrays

This guide explains the components of your CLARiiON storage array and helpsyou plan and implement the best drive geometry, storage processor configuration,and data layout for your environment. Within these pages you will find bestpractices that can help you achieve a flexible and scalable Replication Managerconfiguration that uses your CLARiiON storage array in the most efficient manner.

Note: For similar information regarding HP StorageWorks arrays, refer to the

document entitled EMC Replication Manager StorageWorks Setup Guide.

vi

Preface


Who Should Read this GuideThis guide is part of the EMC ControlCenter Replication Manager documentationset and is intended for storage administrators (often referred to as ERM Adminis-trators) who will set up, configure, and manage the CLARiiON storage arrays usedin conjunction with Replication Manager.

Readers of this guide are expected to be familiar with the following aspects of theCLARiiON storage array:

• Basic familiarity with the array itself (LUN’s, service processors, etc.)

• The host-based storage system software that may be installed on the array(NaviCLI Classic, NaviCLI Java, etc.)

• Basic familiarity with host-based software (NaviSphere and ADMSnap)

• The operating system running on the clients connected to the array

• The logical volume managers controlling the storage on the client

Related DocumentationFor information about how to operate Replication Manager, refer to the followingsources:

• EMC ControlCenter Replication Manager Product Manual — This manualcan be found on the Replication Manager product CD’s in PDF format.

• EMC ControlCenter Replication Manager Help — This help system isavailable from the Replication Manager console.

• EMC ControlCenter Replication Manager HP StorageWorks Setup Guide —This setup guide provides information for Replication Manager customersusing HP StorageWorks storage arrays.

• EMC Navisphere Manager Version 5.x Administrator’s Guide (P/N069001036-02) — This administrator’s guide provides information about theunderlying CLARiiON software that Replication Manager interacts with toperform tasks on the CLARiiON storage array.

ConventionsThe following examples demonstrate the appearance of conventions used in thismanual and explain their use:

vii

Preface


Note: A note calls your attention to information that is important to highlight, but

that is not related to preventing loss of data or damage to the system.

Caution: A caution calls your attention to information that could prevent lossof data or damage to the system.

What if I Need Setup AssistanceIf you need technical assistance with the Replication Manager system, contact theEMC support hotline at:

1 800 SVC-4EMC (1 800 782-4362)

If you are located outside the United States or Canada, contact the nearest EMCoffice for assistance. The service representatives can help you with technicalquestions about EMC hardware and software. They can also help you initiateprofessional service engagements with EMC professionals who can help you getthe most from your investment.

PowerLink Web SiteIn order to receive the latest patches and up-to-date information on ReplicationManager, you must register the product on PowerLink. Once you have registered,you can access PowerLink at http://powerlink.emc.com/. Replication Manager islisted as “EMC ControlCenter Replication Manager Server and WS Pkg” for theserver, and “EMC ControlCenter Replication Manager Agents” for the clients.

EMC PowerLink E-Service features include:

• Automated notification of new software releases

• Advanced viewing of release notes at notification

• Product alerts, giving you the latest product information

• Ability to download software patches

• Access to online training courses geared towards different user roles (ERMAdministrator, Database Administrator, or Operator)

• Comprehensive list of EMC product manuals for convenient reference

• Access to an extensive database of EMC product solutions and frequentlyasked questions, updated daily by EMC customer service

http://powerlink.emc.com

viii

Preface


• EMC Web Support, allowing you to directly open problem or question casesthrough the Web, with the ability to create, query, and update cases directlyinto the EMC call tracking system

Reader CommentsWe welcome your comments on this manual.

Send e-mail to:

[email protected]

Please include the title of the manual: EMC Replication Manager CLARiiON SetupGuide Rev A01 in the subject of all correspondence.


1 Getting Started

This chapter provides a checklist with all the steps required to set up theCLARiiON Environment so that it can work with Replication Manager.

2

Getting Started


CLARiiON Setup ChecklistTo set up the CLARiiON for use with EMC ControlCenter Replication Manageryou must perform the following tasks:

_______ Verify that your environment has the minimum required storagehardware and that the hardware has a standard CLARiiON configu-ration (Refer to “Minimum Required Hardware and Connectivity”on page 7.)

_______ Confirm that your Replication Manager hosts (server and clients)are connected to the CLARiiON environment through a LANconnection.

_______ Zone the fibre switch appropriately (if applicable). The clients mustbe able to access all storage arrays they are using and the mounthosts must be able to access all storage in the EMC ReplicationStorage group.

_______ Install all necessary software on each Replication Manager client,server, and mount host. Also install the appropriate firmware andsoftware on the CLARiiON array itself. (Refer to “CLARiiONStorage Array Logical Components” on page 9.)

_______ Modify the clarcnfg file (in the ../symapi/config/ directory) torepresent all CLARiiON Arrays (Refer to “Setting Up Clients toUse CLARiiON Storage Arrays” on page 12.)

_______ On Solaris hosts, verify that there are enough entries in the sd.conffile to support all dynamic mounts of replica LUNs. (Refer to ...)

_______ Install Replication Manager client software on each client that hasan application with data from which you plan to create replicas(Refer to Replication Manager Product Manual for more infor-mation.)

_______ Create a new user account on the CLARiiON and give this newaccount privileges as an administrator. Replication Manager can usethis account to access and manipulate the CLARiiON as necessary.(Refer to “Setting Up Clients to Use CLARiiON Storage Arrays”on page 12.)

3

Getting Started


_______ Grant storage processor privileges through the agent tab of storageprocessor properties to allow NaviCLI.jar commands from Repli-cation Manager Client Control Daemon (irccd) process to reach theCLARiiON storage array. (Refer to “Setting Up Clients to UseCLARiiON Storage Arrays” on page 12.)

_______ Update the agent.config file on each client where ReplicationManager is installed to include a link to:user system@<ip address> where <ip adress> is the IPaddress of a storage processor. You should add a link to bothstorage processors in each StorageWorks array that you are using.(Refer to “Setting Up Clients to Use CLARiiON Storage Arrays”on page 12.)

_______ Verify that you have Clone Private LUNs set up on yourCLARiiON storage array. (Refer to the CLARiiON documentationfor more information about how to set these up if necessary.)

_______ Create a mount storage group for each mount host and make surethat storage group contains at least one LUN, and that the LUN isvisible to the mount host. This LUN does not have to be dedicatedor remain empty, you can use it for any purpose. However if noLUNs are visible to the Replication Manager mount host, Repli-cation Manager will not operate.

_______ Create a storage group named EMC Replication Storage andpopulate it with free LUNs that you created in advance for Repli-cation Manager to use for storing replicas. (Refer to “Creating the“EMC Replication Storage” Storage Group” on page 23.)

_______ Start the Replication Manager Console and connect to your Repli-cation Manager server. You must perform the following steps:

_______ Register all Replication Manager clients

_______ Run Discover Arrays

_______ Run Configure Array for each array discovered

_______ Run Discover Storage for each array discovered

4

Getting Started


See “Replication Manager Product Manual.” for more informationabout the operation of the four processes listed above.


2 Storage ArrayArchitecture

This chapter describes the architecture of the CLARiiON storage arrays that Repli-cation Manager supports, including these topics:

• Supported CLARiiON Storage Arrays

• CLARiiON Hardware and Software Configurations

• CLARiiON Storage Array Logical Components

6

Storage Array Architecture


Supported CLARiiON Storage ArraysReplication Manager supports the following CLARiiON storage arrays:

• CLARiiON FC4700 series

• CLARiiON CX600 series

• CLARiiON CX400 series

You can configure any of these arrays to perform the following tasks, inconjunction with Replication Manager:

• Create replicas using CLARiiON SnapView software

• Mount those replicas to alternate hosts

• Restore information from those replicas

Note: Replicas created on CLARiiON Storage Arrays are created using SnapView

Clones. The Protected Restore and Instant Restore features of these clones

are not supported in this release.

Replication Manager masks the complexity associated with each of these tasks.This manual describes the setup requirements of the CLARiiON storage array andassociated hardware.

Note: These setup tasks must be completed before you can use Replication

Manager with the CLARiiON storage array.

7



CLARiiON Hardware and Software ConfigurationsCLARiiON storage arrays provide RAID-protected storage, compatible withReplication Manager. There is a minimum set of hardware, software, and connec-tivity that must be installed and configured to support Replication Manager in theCLARiiON environment. This section defines those requirements:

Minimum Required Hardware and ConnectivityThe following storage and connectivity hardware components are required for anyimplementation of Replication Manager in a CLARiiON environment:

• One or more supported CLARiiON storage array(s)

• Replication Manager Server (on a Solaris or Windows 2000 server)

• Replication Manager Clients (on Solaris, HP, or Windows 2000 hosts)

• Local Area Network (LAN) connectivity between the components listed above

• Fibre connectivity between the Replication Manager clients and theCLARiiON storage array(s) (direct connect or through switched fibre connec-tions)

Minimum Required Software for the CLARiiON ArrayThe following software must be installed on the CLARiiON storage array itself:

• EMC CLARiiON Navisphere Agent version 6.2.0.6.0 or higher

• EMC CLARiiON SnapView version 2.x or higher

• EMC CLARiiON AccessLogix must be enabled

Minimum Required Software for All HostsThe following software must be installed on all Replication Manager hosts,including the Replication Manager Server, Replication Manager Clients and Repli-cation Manager Mount hosts:

• EMC Solutions Enabler with SYMAPI 5.0.2 (multi-threaded) or higher

• SYMAPI license key with the Base license

• All EMC Solutions Enabler hot fixes to bring SymmAPI up to edit level 289

http://www.emc.com/products/software/timefinder.jsp

8



Minimum Required Software for Client HostsThe following software must be installed on all Replication Manager clients andmount hosts (the systems on which you plan to mount the replicas that you create):

• EMC Navisphere Agent version 6.2.0.6.0 or higher(install this on the C:\ drive for Windows installations)

• EMC NaviCLI version 6.2.0.6.0 or higher(including NaviCLI.exe and NaviCLI.jar)

• EMC ADMSnap version 2.0 or higher(install this on the C:\ drive for Windows installations)

If you use PowerPath, you must install version 3.0 or higher. Also, Application-Transparent Failover (ATF) is NOT supported with Replication Manager 2.0 in theCLARiiON environment.

9



CLARiiON Storage Array Logical ComponentsThe CLARiiON storage array also includes the following RAID and logical unitstructures:

Supported RAID GroupsA RAID group is a set of disks on which you can bind one or more logical units(LUNs). A logical unit is a portion of a RAID group that is made available to theclient as a logical disk. Each LUN you bind on a RAID group is distributed equallyacross the disks in the group. You can also choose to expand RAID groups byadding one or more disks. If you expand a RAID group, the existing LUNs boundon that RAID group do not expand in size. Instead, the CLARiiON distributes thecapacity of the LUNs equally across all the disks in the RAID group, freeing spacefor additional LUNs.

RAID Groups can include any of the following types of RAID protection:

• RAID 0 (Striping) — Array of disks with data distributed across multipledisks. This is called striping because data is written in stripes that cross drivespindles. RAID 0 provides no fault tolerance because it does not store parityinformation.

• RAID 1 (Mirroring) — Data from one disk is fully mirrored to a second disk,providing excellent data availability and fault tolerance.

• RAID 0+1 (Striping and Mirroring) — Array of striped disk is mirrored to anidentical array. RAID 0+1 provides the highest level of data availability sincethe array maintains two complete copies of a striped set of information andprovides excellent fault tolerance.

• RAID 3 (Striping and Parity with a dedicated parity disk) — As in RAID 0,data is striped across a set of disks. In addition, parity information is generatedand stored on a dedicated disk. The parity information provides a way torecover data on a disk if an error occurs.

• RAID 5 (Striping and Parity with distributed parity information) — ThisRAID type writes complete data blocks to each drive and distributes the parityinformation to all the drives in the striped array.

For information about when to use each type of RAID group and how to set upthese groups, refer to “Managing RAID Groups, LUNs, and Storage Groups” onpage 21.

10



Logical Units (LUNs)After you create the RAID groups, you must also create logical units (LUNs) builton top of these RAID groups. Logical Units allow CLARiiON users to subdividetheir RAID groups into convenient sizes. Replication Manager works at LUN level.

To create a replica of a certain LUN, Replication Manager must have access toanother LUN of exactly the same logical size. However, the LUN that is the targetfor the replica does not have to have the exact same RAID type as the source LUN.

If data is spread across multiple LUNs, Replication Manager must have access toenough free LUNs of exactly the same size or larger in order to create the replica.

Note: If you ask Replication Manager to create a replica of some set of data that

shares a LUN with some other data, the replica will contain all the data on

that LUN. This can cause issues in which you restore older data over newer

data without realizing it. When this happens, the entities that are overwritten

inadvertently are called “affected entities.” It is important to configure your

data so that these affected entities issues are reduced or eliminated.


3 Storage Arrayand ClientPreparation

This chapter describes how to prepare the CLARiiON Storage Array to work withReplication Manager. It covers the following subjects:

• Setting Up Clients to Use CLARiiON Storage Arrays

• Planning Your CLARiiON Drive Configuration

• Managing RAID Groups, LUNs, and Storage Groups

12

Storage Array and Client Preparation


Setting Up Clients to Use CLARiiON Storage ArraysYou need to install the software described below on the client machines used forReplication Manager and configure the system to recognize the CLARiiON storagearrays to which you plan to connect. To do this, follow these steps:

Install Software on the ClientInstall the following software on each Replication Manager client

• EMC Solutions Enabler with SYMAPI 5.0.2 (multi-threaded) or higher

• SYMAPI license key with the Base license

• All EMC Solutions Enabler hot fixes to bring SymmAPI up to edit level 289

• EMC CLARiiON Navisphere Agent version 6.2.0.6.0 or higher on the Repli-cation Manager clients

• EMC NaviCLI version 6.2.0.6.0 or higher (classic and java) on the ReplicationManager clients including: Navisphere Classic and Navisphere Java

• EMC ADMSnap version 2.0 or higher on the Replication Manager clients

Update the CLARiiON Configuration FileModify the clarcnfg file found in the /var/symapi/config directory (UNIX)or c:\Program Files\EMC\symapi\config\ directory (Windows).

This file should contain the serial number and the IP address or network name ofeach storage processor (A and B) in three space separated columns in the file. oneentry for each of the CLARiiON storage arrays that exist in your environment. Asample clarcnfg file is shown in Figure 1.

http://www.emc.com/products/software/timefinder.jsp

13



Figure 1: Sample clarcnfg File

This file can contain information about a single array (as shown) or information fora list of arrays (one per line) if you have more than one in your environment.

Note: While the sample file shown in Figure 1 is for an FC4700-based machine,

this file can be created for CX series machines as well.

Grant Client Login PrivilegesIf no administrator account exists on the CLARiiON, create a new user account onthe CLARiiON and give this new login privileges as an administrator. ReplicationManager can use this account to access and manipulate the CLARiiON asnecessary. To do this, follow these steps:

1. Open Navisphere Manager and choose User Management under Security fromthe menu.

14



Figure 2: Navisphere User Management Screen

2. Create a new user or modify an existing user to an administrator role.

Use this user’s credentials when you perform the Configure Array step inReplication Manager.

15



Update the sd.conf Entries for Dynamic MountsOn Solaris Hosts, make sure your sd.conf file has enough entries to support alldynamic mounts of replica LUNs.

– See your Host Bus Adapter documentation for more information abouthow to modify your sd.conf files.

– Reboot each client after making any changes to the sd.conf file.

Update the Navisphere Host Agent Configuration FileInstall Navisphere Host Agent and modify the agent.config file on each clientmachine that will host Replication Manager software. The agent.config file shouldinclude a line for each storage processor in each array with which the clientmachine will interact. There are always two storage processors per array.

The line in the agent.config file should have the following format

user system@<ip address>

where <ip address> is the IP Address of each storage processor. A sampleagent.config file is shown in Figure 3.

16



Figure 3: Sample agent.config file

In Navisphere Manager you must also define each Replication Manager client as aprivileged user. To do this, follow these steps:

1. Right-click on SPA or SPB in the tree and choose Properties.

2. Choose the Agent tab under SP Properties.

Add to the Privileged Users list as follows:

To add UNIX clients to the list typeroot@<ip address>

To add Windows clients to the list typesystem@<ip address>

Where <ip address> is the IP address of the client machine considered aprivileged user.

3. Add all the Replication Manager client machines to all the storage processors.An example screen is shown in Figure 4.

LastSave 3213203117clarDescrMount Unix HostclarContact Joe Awos x93629device auto autouser [email protected] [email protected] [email protected] [email protected] [email protected]

poll 60 eventlog 100 baud19200

17



Figure 4: SP Properties screen

18



Planning Your CLARiiON Drive ConfigurationIn order to configure a CLARiiON storage array for use with Replication Manager,you must perform the following steps:

1. Plan replica storage needs.

2. Manage RAID groups and logical units (LUNs) according to your plan.

3. Create Storage Groups and Assign LUNs to the appropriate storage group.

What is a Replica on the CLARiiON?Before we describe how to plan for replicas, it is important to understand what areplica is in the context of the CLARiiON storage array. Replicas are full copies ofthe production data created using SnapView Clones. They are not created usingsnapshot or any other technology. See the SnapView documentation for morespecifics on SnapView Clones.

Planning Replica Storage NeedsBefore you use Replication Manager with your CLARiiON Storage Array, it isvery important to plan your replica storage needs. Planning your storage needsmeans:

• Analyzing your existing storage usage to determine what storage you will needin the future

• Calculating the size of the existing or new LUNs you want to replicate

• Determining how many replicas of each LUN you will need

• Choosing a RAID type for the replica LUNs

If you can create all your LUNs the same size or limit the number of different sizedLUNs, you will have more flexibility when selecting which storage you can use foryour replica because replica storage must exactly match the logical size of thesource LUN.

Replication Manager does not create LUNs automatically to support your replicaneeds. Therefore, as part of the CLARiiON setup, you must create all replica LUNsbefore you can use Replication Manager to create replicas. Remember thatalthough the logical size of the replica LUN must match the logical size of thesource LUN, your replica can have a different RAID type that the source.

19



For example, let’s assume you have three databases stored on your CLARiiONarray.

• Database 1 on a RAID 5 LUN (50 GB capacity)

• Database 2 on a RAID 1 LUN (70 GB capacity)

• Database 3 on a RAID 1+0 LUN (40 GB capacity)

If you want to be able to maintain five simultaneous replicas of each database onthat array, you must create the following LUN’s.

• At least five LUNs exactly 50 GB (logical size), for Database 1



For a graphical representation of this configuration, refer to Figure 5 below.

20



Figure 5: Replica LUNs must match the Production LUN size

Production LUN Production LUNProd.LUN

ReplicaLUNs

21



Managing RAID Groups, LUNs, and Storage GroupsThis section provides information about:

• Configuring RAID Groups

• Creating LUNs and Binding Them to RAID Groups

• Assign LUNs to the Storage Groups

Configuring RAID GroupsYou can set up RAID groups on the CLARiiON by following the steps outlined inEMC Navisphere Manager Administrator’s Guide (P/N 069001036-02).

In general, the process to create a RAID Group is as follows:

1. Using the Navisphere Manager software, choose the Enterprise Storage dialogbox and click the Equipment or Storage tab.

2. Right-click the icon for the storage system on which you want to create theRAID group and choose Create RAID Group.

Here you can specify the following characteristics of the RAID group:

– RAID group ID

– Number of disks in the RAID group

– RAID type (RAID 0,1,1/0,3,5)

If you want to specify exactly which spindles to use or specify other featuresof the RAID group, click the Advanced button.

Creating LUNs and Binding Them to RAID GroupsWhen you store data onto a CLARiiON system, the basic unit of storage is thelogical unit or LUN. Replication Manager therefore has set the granularity forReplicas at the LUN level as well. This means that you should size the LUNs youplan to use for replicas to exactly the same size as the LUNs you plan to replicate.

Note: If you have installed a Logical Volume Manager, such as Veritas, granularity

is at the volume group level.

Once all the desired RAID groups have been created, you must then create (orbind) LUNs to the RAID groups as follows:

22



1. Using the Navisphere Manager software, choose the Enterprise Storage orEquipment Storage tab.

2. Click Bind LUN.

3. In the Bind LUN dialog box, click Advanced. Here you can specify thefollowing characteristics of the LUN:

– RAID type (choosing from those RAID Groups created above)

– Disk selection method (Automatic or Manual)

– Number of disks in the LUN (based on guidelines for RAID Groups)

– LUN ID

– Element size

– Rebuild priority

– Verify priority

– Service processor ownership

– Number of LUNs to bind

It is important to create enough LUNs of the correct size, in the proper RAIDgroups to support all the replicas of existing data that you intend to create.

Assign LUNs to the Storage GroupsOnce you have created the LUNs that you need for data storage of the replicas thatyou plan to make, you must add LUNs to storage groups. You will need:

• One storage group for LUNs that Replication Manager can use to createreplicas

• Storage groups for each production host (these may already exist)

• Storage groups for each mount host to use

You can create storage groups on the CLARiiON by following the steps outlined inEMC Navisphere Manager Administrator’s Guide (P/N 069001036-02).

23



Creating the “EMC Replication Storage” Storage GroupBefore you start to use Replication Manager, you must create and populate astorage group that tracks all the LUNs that Replication Manager is allowed to usefor replicas of production data. This storage group is explicitly namedEMC Replication Storage. In general, to create and populate theEMC Replication Storage storage group, follow these steps:

1. In the Enterprise Storage dialog box, click the Equipment or Storage tab.

2. Right-click the icon for the storage system on which you want to create thestorage group, and then click Create Storage Groups.

Here you can specify the following characteristics of the storage group:

– Storage group (name) should be EMC Replication Storage

– Choose whether LUNs are shared (usually only in clustered environ-ments)

– Add all the LUNs that Replication Manager is authorized to use formaking replicas of your production data

– Do NOT connect any hosts to this storage group

Creating Storage Groups for Production HostsIf you are building a new CLARiiON system, you will need to define which hostshave access to which sets of data. You use storage groups to define this. In mostsystems, each production host has access to its own set of production data and theLUNs that hold that data reside in that host’s storage group. By connecting the hostto that storage group, you effectively give that host access to that data on theCLARiiON. Refer to the steps above for information on how to create a storagegroup.

Usually, only one host is attached to each storage group, except in the case of someclustered implementations.

24



Creating Storage Groups for Mount HostsJust as you need to create storage groups for production hosts (if they don’t alreadyexist), you must create storage groups for each mount host and add at least oneLUN to each of these storage groups. Replication Manager automatically populatesthese storage groups with the appropriate LUNs after the replicas have been createdand before they are mounted to the mount host.

Exposing Selected Storage to ClientsAt this point, your storage environment is configured and you can now perform thelast four steps (in the Replication Manager GUI) to expose the arrays and thestorage to Replication Manager. These last configuration steps are as follows:

1. Register all Replication Manager clients on the Replication Manager Server

2. Run Discover Arrays

3. Run Configure Array

4. Run Discover Storage

For more information about how to complete these last four steps, see the EMCReplication Manager Product Manual.


Index

AADMSnap, 8assigning LUNs to storage groups, 22audience, intended readers, v

Bbinding LUNs, 21

Cclarcnfg file, 12comments, submitting comments about the

manual, viconfiguration file, CLARiiON, 12configuring RAID groups, 21connectivity, minimum required, 7conventions, documentation, vicreating

LUNs, 21storage groups, 23

customer service, vii

Ddocument conventions, vidrive configuration, 18

EECC RM Storage Group, 23element size (LUN), 22

Ffeedback, viii

Hhardware

minimum required, 7help, vi

Llogical unit, 9logical unit (LUN)

assigning to volume groups, 22binding, 21creating, 21defined, 10

LUN, 9, 10LUN ID, 22

Mminimum required

connectivity, 7hardware, 7

mirroring, 9mount host

defined, 8requirements, 2storage group, 3

NNaviCLI, 8Navisphere Administrator’s guide, viNavisphere Manager, 8

Pparity protection, 9planning storage needs, 18product manual, vi

RRAID

configuring, 21defined, 7level 0 striping, 9level 0+1 striping and mirroring, 9level 1 mirroring, 9types defined, 9

reader comments, viiirebuild priority (LUN), 22redundant arrays of inexpensive disks see

RAID, 9related documentation, vi

Sservice processor ownership (LUN), 22setup assistance, viisetup guides, viSnapView, 8software SymmAPI, 8software, ADMSnap, 8software, minimum required, 8software, NaviCLI, 8software, Navisphere Manager, 8software, SnapView, 8storage arrays, supported, v, 6storage groups, creating, 23storage needs, planning, 18storage software, minimum required, 8Storageworks information, vstriping, 9

striping and parity protection, 9supported storage arrays, 6SymmAPI, 8

Ttelephone support, vi

Vverify priority (LUN), 22

clsetup

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