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HP StorageWorks

Data Integrity Check XP user guidefor the XP12000/XP10000/SVS200

Part number: T1718-96003First edition: June 2006



Legal and notice information

© Copyright 2006 Hewlett-Packard Development Company, L.P.

Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 and12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items arelicensed 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 forthin the express warranty statements accompanying such products and services. Nothing herein should be construed as constitutingan additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

Oracle® is a registered U.S. trademark of Oracle Corporation, Redwood City, California.

UNIX® is a registered trademark of The Open Group.

Data Integrity Check XP for the XP12000/XP10000/SVS200 user guide



Data Integrity Check XP for the XP12000/XP10000/SVS200 user guide 3

Contents About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Supported storage platforms and firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Related documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Document conventions and symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

HP technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Subscription service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Helpful web sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Documentation feedback. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1 Overview of Data Integrity Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Function Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Data Integrity Check and RAID Manager. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2 Data Integrity Check Operating Environments and Prerequisites . . . . . . . . . . . . . 11Requirements for the array. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Channel Adapter (CHIP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Data Integrity Check License Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Requirements for the Host Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Fibre channel interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11RAID Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Operating System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Oracle database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Logical Volume Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Restrictions and Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12For arrays: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12For host servers: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figures1 Data Integrity Check overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Data Integrity Check components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Tables1 Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Contents



4




About this guide

This guide provides information about:

• Performing Data Integrity Check XP operations• Configuring Data Integrity Check XP Requirements

Supported storage platforms and firmwareIn this guide, the term array refers to the following storage platforms:

• HP StorageWorks XP12000 Disk Array

• HP StorageWorks XP10000 Disk Array• HP StorageWorks 200 Storage Virtualization System

For information about required firmware versions, see the HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000/SVS200 .

Intended audienceThis guide is intended for customers and HP-authorized service providers with knowledge of:

• Disk array hardware and software

• Oracle databases

• Data processing and RAID storage subsystems and their basic functions

NOTE: The functions described in this manual may be limited, depending on your assigned levelof user access. Some users will have read-only access while others will have limited or full array

access. For additional information on users and user groups, please see the HP StorageWorks XP Remote Web Console user guide .

PrerequisitesPrerequisites for using this product include:

• Installation of the HP StorageWorks disk array(s)

• Installation of the license key for this product• Installation of RAID Manager XP

Related documentationThe following documents provide related information:

• HP StorageWorks XP glossary

• HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000 • HP StorageWorks Flex Copy XP user guide



6

• HP StorageWorks Auto LUN XP user guide for the XP12000/XP10000

• HP StorageWorks Business Copy XP user guide for the XP12000/XP10000

• HP StorageWorks Cache LUN XP user guide for XP12000/XP10000

• HP StorageWorks Continuous Access XP Journal user guide

• HP StorageWorks Continuous Access XP user guide for the XP12000/XP10000 • HP StorageWorks LUN Configuration and Security Manager XP user guide for the

XP12000/XP10000

• HP StorageWorksRAID Manager XP User’s Guide

You can find these documents at http://www.hp.com/support/rwc/manuals

Document conventions and symbols

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

IMPORTANT: Provides clarifying information or specific instructions.

Table 1 Document conventions

Convention Element

Blue text: Table 1 Cross-reference links and e-mail addresses

Blue, underlined text:(http://www.hp.com)

Web site addresses

Bold text • Keys that are pressed• Text typed into a GUI element, such as a box

• GUI elements that are clicked or selected, such as menu and listitems, buttons, and check boxes

Italic text Text emphasis

Monospace text • File and directory names

• System output• Code

• Commands, their arguments, and argument values

Monospace, italic text • Code variables

• Command variables

Monospace, bold text Emphasized monospace text

http://www.hp.com/support/rwc/manuals/





NOTE: Provides additional information.

TIP: Provides helpful hints and shortcuts.

HP technical supportTelephone numbers for worldwide technical support are listed on the HP support web site:http://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, specific questions

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

Subscription serviceHP recommends that you register your product at the Subscriber’s Choice for Business web site:http://www.hp.com/go/e-updates.

After registering, you will receive e-mail notification of product enhancements, new driver versions,firmware updates, and other product resources.

Helpful web sitesFor additional information, see the following HP web sites:

• http://www.hp.com

• http://www.hp.com/go/storage

• http://www.hp.com/service_locator• http://www.hp.com/support/manuals

• http://www.hp.com/support/downloads

• http://www.hp.com/support/rwc/manuals

Documentation feedbackHP welcomes your feedback.

To make comments and suggestions about product documentation, please send a message [email protected]. All submissions become the property of HP.

http://www.hp.com/support/

http://www.hp.com/go/e-updates/

http://www.hp.com/

http://www.hp.com/go/storage/



http://www.hp.com/go/storage/

http://www.hp.com/

http://www.hp.com/go/e-updates/

http://www.hp.com/support/



8




1 Overview of Data Integrity Check

Function OverviewData Integrity Check insures validity and protects Oracle data stored on the array. Data IntegrityCheck has the following two purposes (see Figure 1):

• Preventing invalid data from being written to the array

When data is stored on the disk array, the data is transferred through many paths and can becomeinvalid. Data Integrity Check ensures that the Oracle data is valid before it is written to the diskarray. If the data is invalid, Data Integrity Check prevents the invalid Oracle data from being

written. Consequently, it provides high data reliability and increases data management efficiency byreducing costs and saving the time and resources required for the recovery of invalid Oracle data.

• Protecting existing data in the subsystem

Once Oracle data is stored on the disk array, Data Integrity Check protects the data from beingdeleted or updated by mistake. This is accomplished by checking the data to be stored on the samevolume. If data created in another application is being written to a volume where Oracle data isstored, an error is generated.

Figure 1 Data Integrity Check overview



Overview of Data Integrity Check10

Figure 2 shows the Data Integrity Check components and their functions for Oracle data check. Forrequirements (such as product name or versions), refer to ”Data Integrity Check OperatingEnvironments and Prerequisites” on page 11.

Figure 2 Data Integrity Check components

Data Integrity Check and RAID ManagerData Integrity Check is configured and operated using Data Integrity Check commands in RAIDManager XP. For RAID Manager operations, refer to the HP StorageWorks RAID Manager XP User’sGuide .

You must specify the volume to be checked, and the type of check using RAID Manager (the typesare different depending on versions). The files (constructed in RAW volume) that are checked are:Data, Redo log and Control. If data is written from the host server to the array, the data check isinitiated by channel adapters (CHIPs) that support Data Integrity Check.

NOTE: The check is not started when the data is read.

When invalid data is detected, the error is reported from the CHIPs to RAID Manager, and a log(syslog) is generated from RAID Manager.




2 Data Integrity Check Operating Environments andPrerequisites

Data Integrity Check requires the following:

• A Command View XP array (see ”Requirements for the array” on page 11)

• A Host server that supports an Oracle database and has RAID Manager installed (see”Requirements for the Host Server” on page 11)

• An Oracle-data validation service (see ”Restrictions and Conventions” on page 12

Requirements for the arrayData Integrity Check requires a properly configured array and a channel adapter with the correctmicrocode.

Channel Adapter (CHIP)Data Integrity Check supports the following CHIP types:

• DKC-F510-32HS (16 ports/PCB)

• DKC-F510-16HS (8 ports/PCB)

CAUTION: If CHIPs are used that do not support Data Integrity Check are used with CHIPs that dosupport Data Integrity Check, the validity of the data is not checked when the data processed withthe unsupported CHIPs. HP recommends you to update all the CHIPs so that they would supportData Integrity Check.

Data Integrity Check License KeyYou need to install the license key for Data Integrity Check on the array using Remote Web Console.To install the license key, refer to the HP StorageWorks XP Remote Web Console user guide .

Requirements for the Host ServerYou will need the following items installed on the host server:

Fibre channel interface A fibre channel connection is required between the host server and the array.

RAID ManagerRAID Manager version 01-16-03/05 or better is required.

Operating SystemOne of the following operating systems is required.



Data Integrity Check Operating Environments and Prerequisites12

• Sun® Solaris™ 8 or better. For further information on the Solaris™ platform, refer to theHP StorageWorks XP Remote Web Console user guide for XP12000/XP10000

• HP-UX 11.0 or better. For further information on the HP-UX platform, refer to theHP StorageWorks XP Remote Web Console user guide for XP12000/XP10000

• Windows 2000 Advanced Server (Service Pack 3 or later)• AIX 5L Version 5.1 ML3

Oracle databaseOne of the following Oracle databases is required.

• Oracle8i

• Oracle9i

• Oracle9i Release2

NOTE: Oracle database needs to be constructed in RAW volume. Also, you need to setDB_BLOCK_CHECKSUM parameter to TRUE.

Logical Volume ManagerOne of the following Logical Volume Manager versions is required.

• VxVM (for Solaris™)

• LVM (for HP-UX )

• LVM (for AIX )

NOTE: Versions other than above may be supported in the future enhancement. For the

latest information, contact your HP account support representative.

Restrictions and Conventions When you use Data Integrity Check, or when Data Integrity Check is installed, the followingrestrictions and conventions are applied.

For arrays:• You cannot downgrade the microcode (DKCMAIN program) version.

• You cannot replace an existing CHIP which supports Data Integrity Check with a CHIP whichdoes not support Data Integrity Check.

• If you uninstall the Data Integrity Check license key, you need to delete the settings of the volumeto be checked by Data Integrity Check from RAID Manager in advance.

• The setting of Data Integrity Check can only be deleted using RAID Manager.




• If you want to change the configuration of the LDEVs (for example, decreasing the set LDEVs,creating CVs), you need to delete the setting of Data Integrity Check using RAID Manager first,and then perform the change.

For host servers:• Do not write data other than Oracle data to the Oracle data check volume (LU). If multiple paths

are set to the same volume (LU), check if those paths are not all set as the target of Oracle datacheck.

• Do not set the data storage location of the Data or Control file and the Redo log file to the samevolume (LU).

• Do not store Oracle data of different block sizes in a volume (LU). Only write data of the sameblock size to a volume (LU).

• When you change the configuration of logical volume manager to the volume (LU) which is setas the target of the Oracle data check, you need to delete the settings of the target LUs anddisable the Oracle check function (Data Integrity Check) once. After changing the configuration,you need to enable Data Integrity Check again and reset the LUs which are the target of thecheck.

• When you restore the Oracle data which was backed up before Data Integrity Check wasinstalled on the array, you need to disable Data Integrity Check.

• To set the volume (LU) of the array as the target of the Oracle data check, you need to have aCHIP that supports Data Integrity Check.



Data Integrity Check Operating Environments and Prerequisites14




Index

Aaudience 5authorized resellers, HP 7

Cconventions

document 6

DData Integrity Check

function overview 9overview 9

documentconventions 6prerequisites 5

documentation, related 5

Hhelp, obtaining 7HP

authorized resellers 7storage web site 7Subscriber’s choice web site 7technical support 7

Pprerequisites 5

SSubscriber’s choice, HP 7

Ttechnical support, HP 7

Wweb sites

HP documentation 6HP storage 7HP Subscriber’s choice 7



16



Figures1 Data Integrity Check overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Data Integrity Check components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10





Tables1 Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6



Documents

hpXPDataIntegrityCheck_UG Rootsan technologies Pvt Ltd