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HP StorageWorksXP Data Shredder user guide

Part number: T1721-96003Third edition: March 2006


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Legal and notice information

Copyright 2005, 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 and 12.212,Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Governmentunder vendors 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 expresswarranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shallnot be liable for technical or editorial errors or omissions contained herein.

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All other brand or product names are or may be registered trademarks, trademarks or service marks of and are used to identify products or servicesof their respective owners.

XP Data Shredder user guide


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XP Data Shredder user guide 3

About this guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Prerequisites. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Firmware versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Related documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Document conventions and symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6HP technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Subscription service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Helpful web sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1 XP Data Shredder for the XP12000/XP10000/XP1024/XP128 . . . . . . . . . . . . . . . . . . . 9Overview of Shredding operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Target volumes for Shredding operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Preparing to use Data Shredder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Starting Data Shredder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Shredding Param pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Confirmation pane for completing Shredding operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Shredding Data Output pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Shredding operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Preparing for Shredding operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Defining Shredding operation settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Deleting data on volumes (Shredding) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Canceling Shredding operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Figures

1 Overview of Shredding operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Customized Volume pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3 Shredding Param pane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Shredding Data Output pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Tables1 Recommended and minimum firmware versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Ending status of Shredding operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Contents


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About this guideThis guide provides information about the following:

Overview of Shredding operations on page 9 Target volumes for Shredding operations on page 10 Preparing to use Data Shredder on page 10

Starting Data Shredder on page 10 Shredding Param pane on page 11 Confirmation pane for completing Shredding operations on page 12 Shredding Data Output pane on page 13 Shredding operations on page 13

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

Disk array hardware and software Data processing and RAID storage subsystems and their basic functions

NOTE: The functions described in this manual may be limited, depending on your assigned level of useraccess. Some users will have read-only access while others will have limited or full array access. Foradditional information on users and user groups, please see theHP 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

Firmware versionsThe recommended firmware versions shown inTable 1 provide the optimal level of support for the featuresprovided with this product. Older firmware versions can be used; however, product features enabled withnewer firmware will not appear.

Related documentationIn addition to this guide, please refer to other documents for this product:

HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000 HP StorageWorks XP Remote Web Console user guide for XP1024/XP128 HP StorageWorks LUN Configuration and Security Manager XP user guide for the XP12000/XP10000 HP StorageWorks LUN Configuration and Security Manager XP user guide for the XP1024/XP128

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

Table 1 Recommended and minimum firmware versions

XP disk array Minimum Recommended

XP12000 50-05-46-00/00 or later 50-06-xx-00/00 or later

XP10000 50-05-46-00/00 or later 50-06-xx-00/00 or later

XP1024/XP128 21-14-14-00/00 or later 21-14-18-00/00 or later
http://www.hp.com/support/rwc/manuals/http://www.hp.com/support/rwc/manuals/


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

After subscribing, locate your products by selectingBusiness supportand then Storage under ProductCategory.

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

http://www.hp.com http://www.hp.com/go/storage http://www.docs.hp.com http://www.hp.com/support/rwc/manuals
http://www.hp.com/http://www.hp.com/go/storage/http://www.docs.hp.com/http://www.hp.com/support/rwc/manuals/http://www.hp.com/go/storage/http://www.hp.com/http://www.hp.com/support/rwc/manuals/http://www.docs.hp.com/


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1 XP Data Shredder for theXP12000/XP10000/XP1024/XP128If you change the user for a volume, you should delete data stored by the previous user for securitypurposes. The Data Shredder feature deletes data on volumes and prevents deleted data from beingrestored. Shredding operation refers to the process of deleting all data on a volume by overwriting it withdummy data.

Data Shredder is based on DoD5220.22-M, which is the standard defined by the U.S. Department ofDefense.

Data Shredder is used for both open and mainframe systems.

Overview of Shredding operationsThe Shredding operation completely deletes data on a specified volume by repeatedly overwriting existingdata with dummy data. You perform Shredding operations from the Command View XP managementstation or XP Remote Web Console.Figure 1 shows an example of Shredding operations.

Figure 1 Overview of Shredding operations

Because of the nature of hard disks, overwriting a volume once is not enough to completely delete data,which means deleted data could be restored. Therefore, HP recommends you overwrite a volume withdummy data at least three times.


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10 XP Data Shredder for the XP12000/XP10000/XP1024/XP128

By default, Data Shredder overwrites volumes with dummy data three times. You can change the defaultand overwrite the volume up to eight times. For more information, seeDefining Shredding operationsettings on page 14 .

Target volumes for Shredding operationsYou can use the Shredding operation for any type of volume (for example, VDEV, LDEV, or custom volume)and emulation type, but the status of the volume must beBlocked. If the status isNormal, the volume cannotbe the target of Shredding operations. For instructions to change the status of a volume to Blocked, seePreparing for Shredding operations on page 13 .

NOTE: Select target volumes for Shredding operations in the Volume Manager pane. You cannot performShredding operations on the following volumes: Pool volumes (pool-VOLs) Virtual volumes Journal volumes Volumes containing extents

For more information, seeDeleting data on volumes (Shredding) on page 15 .

Preparing to use Data ShredderBefore launching Data Shredder, install and enable Data Shredder on each disk array where you intend touse these options.

Starting Data Shredder1. Click the Volume Manager button ( ). The Volume Manager pane appears.

NOTE: To change settings for Data Shredder, you must be in Modify mode.

2. Click theCustomized Volumetab.

Figure 2 Customized Volume pane


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Shredding Param paneUse this pane to define settings for Shredding operations. To open this pane, clickShredding Param (Parameter) on the Customized Volume pane.

Figure 3 Shredding Param pane

The Shredding Param pane contains the following:

Write Data Type: Settings for Shredding operations. Default (00-FF-00): If selected, defaults are used for Shredding operations. Data on a volume is

deleted by overwriting the volume with dummy data three times. When the volume is overwritten thefirst and third times, Data Shredder uses 00 (hexadecimal number) for the dummy data. When thevolume is overwritten the second time, Data Shredder uses FF (hexadecimal number) for the dummydata.

User : If selected, you define the dummy data and how many times the volume is overwritten. Formore information, seeDefining Shredding operation settings on page 14 .

Write Data: Dummy data. Define: Enter up to four numbers or characters for the dummy data. You can enter only hexadecimal

numbers, including numbers 0 to 9, and alphabetic characters A to F. If you enter more than fourdigits, the entry is not accepted.

NOTE: Dummy data is written two digits at a time. Therefore, enter an even number of digits in thetext box. If you enter an odd number of digits (for example, 123) and clickSet, an error messageappears. If you enter more than four digits, the entry is not accepted.

Random: Data Shredder randomly selects 4-digit hexadecimal numbers for the dummy data. Format List:

NO.: Number of times volume is overwritten.If you selectUser in the Write Data Typefield, and specify number of times volume is overwritten,Last Dataappears in this column.

Data: Contents of the dummy data. Dummy data is shown in sets of two digits with a spacebetween each set of digits. IfLast Dataappears in the NO. column, the dummy data is always 00.

Set: Adds dummy data defined in the Write Data field to theFormat List. You can add dummy data amaximum of seven times.


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Shredding Data Output pane When you specify volumes in the Shredding Data Output pane during a Shredding operation, the resultsof the operation are saved in files.

Figure 4 Shredding Data Output pane

The Shredding Data Output pane contains the following:

non-object VolumeResults of shredding volumes in this list arenot saved in files.

object VolumeResults of shredding volumes in this list are saved in files.Each row represents one volume. Each volume is represented by a CU number (left of the colon) andLDEV number (right of the colon).

AddMoves volumes selected in thenon-object Volumelist to theobject Volumelist.

DeleteMoves volumes selected in theobject Volumelist to thenon-object Volumelist.

OK Save the settings and close the Shredding data output pane.

Shredding operationsShredding operations proceed as follows:

Display the Volume Manager pane (seeStarting Data Shredder on page 10 and theHP StorageWorks LUN Configuration and Security Manager XP user guide for the specific disk array.

Prepare for Shredding operations (seePreparing for Shredding operations on page 13 ). Define Shredding operation settings (seeShredding Param pane on page 11 and Defining

Shredding operation settings on page 14 ).

Perform Shredding operations (seeDeleting data on volumes (Shredding) on page 15 ).

NOTE: To quit shredding operations, seeCanceling Shredding operations on page 16 .

Preparing for Shredding operationsBefore performing shredding operations, change the status of the target volume toBlocked.


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14 XP Data Shredder for the XP12000/XP10000/XP1024/XP128

NOTE: When you change the status of a volume toBlocked, I/O operations cannot be performed on thevolume. By specifying write permissions, you can limit who is allowed to perform shredding operations.

1. In the Command View XP or XP Remote Web Console main pane, change toModifymode by clickingthe button ( ). A message pane appears asking if you want to change the mode.

2. ClickOK . The operation mode changes.3. Select a CU group from the drop-down list in the upper right of the XP Remote Web Console main

pane.4. In the Volume Manager pane, clickLDEV Status. The status of volumes is displayed in theStatus column

in the LDEV Informationtable.

NOTE: If hyphens appear in the Status column, clickLDEV Statusin the Volume Manager pane todisplay the status of volumes (for example,Normal or Blocked).

5. Select the target volume in theLDEV Informationtable.6. Right click the target volume, and selectBlockade. Information about the target volume is shown in blue

and italics.

7. Click Apply. A message pane appears asking if you want to apply the settings.8. ClickOK . The status of the volume changes toBlocked.

NOTE: If you selectRestoreand click Apply, you can change the status of the volume fromBlocked to Normal again. However, you cannot perform this operation on virtual volumes (V-VOLs).

Defining Shredding operation settingsUse the Shredding Param pane to define the settings used for Shredding operations.

NOTE: When you change the status of a volume toBlocked, I/O operations cannot be performed on thevolume. By specifying write permissions, you can limit who is allowed to perform shredding operations.

1. In the Customized Volume pane, clickShredding Param. The Shredding Param pane appears.2. SelectDefaultor User in the Write Data Typefield.

If you selectedUser , go to step 3.If you selectedDefault, go to step 7.

3. SelectDefineor Randomin the Write Data field.If you selectedDefine, go to step 4.If you selectedRandom, go to step 5.

4. Enter dummy data in the text box.5. ClickSet. A row is added to the Format List.6. If you selectedDefinein the Write Data field, repeat step 4 and step 5 until there are three or more

rows in the Format List, including theLast Datarow.If you selectedRandomin the Write Data field, repeat step 5 until there are three or more rows in theFormat List, including theLast Datarow.

CAUTION: Although you can execute Shredding operations when there are less than three rows inthe Format List, you might not be able to completely delete data from the volume. Therefore, HPrecommends you define three or more rows in theFormat List.

7. ClickOK . The Shredding Param pane closes.


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NOTE: To delete a row from theFormat List, select the row, and clickDelete. You cannot delete therow defined as Last Data.

Deleting data on volumes (Shredding)You can perform the Shredding operation on any given volume as many times and as often as you want.

1. In the Volume Manager pane, check theLDEV Informationtable, and verify that the status of the targetvolume isBlocked.

NOTE: If the status of the volume is not shown in theLDEV Informationtable, clickLDEV Status. Ifthe status of the volume is notBlocked, see Preparing for Shredding operations on page 13 forinstructions on changing the status toBlocked.

2. Select the target volume in theLDEV Informationtable, and right click.3. SelectShredding. A message appears.4. ClickOK to close the message. Information about the target volume is shown in blue and italics.5. Click Apply. The Shredding Data Output pane appears. Data has not been deleted from the volumes.

6. Use the Shredding Data Output pane to specify how to save the Shredding Operation results.To save the results, ensure that the volume appears in theobject Volumelist. If the volume does notappear in the object Volumelist, select it in thenon-object Volumelist, and click Add. Note that theobject Volumelist can contain only three volumes.If you do not want to save the results, ensure that the volume appears in thenon-object Volumelist. Ifthe volume does not appear in thenon-object Volumelist, select it in theobject Volumelist, and clickDelete.

7. ClickOK . A message appears asking if want to apply the settings.8. ClickOK to apply the settings and begin the Shredding operation. During the Shredding operation, a

status message appears.

CAUTION: If you clickCancelon the message pane to quit the Shredding operation, you cannotrestart the Shredding operation. For instructions on canceling Shredding operations, seeCanceling Shredding operations on page 16 .

9. When the shredding operation is finished, a confirmation pane appears.To download the file containing the results of the shredding operation, go tostep 10.If you do not need to download the file, go tostep 12.

10.ClickDownload.11. Select the folder where you want to download the file.12.ClickOK .

If you downloaded the file, the file is downloaded to the specified folder.If you did not download the file, the confirmation pane closes.

When the Shredding operation is finished, the status of the previously shredded volume automaticallychanges from Blockedto Normal.

NOTE: You can also click theDownloadbutton in the Volume Manager pane to download the filecontaining the results of the Shredding operation. If you clickDownloadin the Volume Manager pane, allresults of shredding operations are in the file to be downloaded. If you have not performed any shreddingoperations, an error occurs when you clickDownload.


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Index

Aaudience, documentation 5

BBlocked status 10 , 13 , 14

Ccanceling shredding 16confirmation pane 12conventions

document 6text symbols 6

customer support 6

D

deleting data 15documentconventions 6prerequisites 5related documentation 5

dummy data 9 , 11

Eending status 12example of shredding operations 9

F

firmware versions 5Hhelp, obtaining 6 , 7HP

storage web site 7Subscribers choice web site 6technical support 6

NNormal status 10

Ooutput pane 13

PParam panel 11preparing for shedding operations 13prerequisites 5

Rrelated documentation 5

Ssaved in files, volumes 13settings 14shredding data

canceling 16confirmation pane 12deleting data on volumes 15example 9preparing for 13settings 14starting 10volume status 10

Shredding Data Output pane 13Shredding Param panel 11standards 9starting the Data Shredder 10status, volume 10Subscribers choice, HP 6symbols in text 6

Ttarget volumes 10technical support, HP 6text symbols 6

UU.S. Department of Defense standards 9

Vvolume status 10

W web sites

HP documentation 5HP storage 7HP Subscribers choice 6


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