HP StorageWorks XP Data Shredder user guide HP XP12000 Disk Array HP XP10000 Disk Array nl Part number: T1721-96008 Seventh edition: June 2009
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Contents 1 HP StorageWorks XP Data Shredder for the XP12000/XP10000 Disk Array .................................................................................................. 7 Overview of Shredding operations ................................................................................................ 7 Target volumes for Shredding operations ....................................................................................... 8 Preparing to use Data Shredder .......................................
Figures 1 Overview of Shredding operations .............................................................................. 8 2 Customized Volume pane ......................................................................................... 10 3 Shredding Param pane ............................................................................................ 10 4 Confirmation pane for completion of the Shredding operation ...................................... 12 5 Shredding Data Output pane ..................
Tables 1 Ending status of Shredding operations .......................................................................
1 HP StorageWorks XP Data Shredder for the XP12000/XP10000 Disk Array If you change the user for a volume, you should delete data stored by the previous user for security purposes. HP StorageWorks XP Data Shredder deletes data on volumes and prevents deleted data from being restored. Shredding operation refers to the process of deleting all data on a volume by overwriting it with dummy data. XP Data Shredder for the HP StorageWorks XP12000/10000 Disk Array is based on DoD5220.
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 with dummy data at least three times. By default, Data Shredder overwrites volumes with dummy data three times. You can change the default and overwrite the volume up to eight times. For more information, see Defining Shredding operation settings.
• • • • Pool volumes (pool-VOLs) Virtual volumes Journal volumes Volumes containing extents of Data Retention Utility NOTE: A Data Retention Utility extent is a data area in an OPEN-V volume to which a VMA area is set. By using HP StorageWorks XP RAID Manager library, the Read Only attribute can be set to the extent. If an extent is set to a volume, VLL and LUSE functions cannot be used for the volume.
2. Click the Customized Volume tab. Figure 2 Customized Volume pane Shredding Param pane Use this pane to define settings for Shredding operations. To open this pane, click Shredding 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 the first and third times, Data Shredder uses 00 (hexadecimal number) for the dummy data. When the volume is overwritten the second time, Data Shredder uses FF (hexadecimal number) for the dummy data. • User: If selected, you define the dummy data and how many times the volume is overwritten.
number of the volume is 11. The filename also indicates that dummy data have been written to that volume three times. A binary file contains the first 512 bytes of data of a shredded volume (LDEV). Figure 4 Confirmation pane for completion of the Shredding operation This panel displays ending status of a shredding operation. When this panel appears, check the panel contents to verify whether all the overwriting operations have ended normally.
NOTE: The shredding result file cannot be downloaded if the SVP is shut down (for example, if the SVP has been rebooted by the service engineer or by the “automatic SVP reboot” function). If the Shredding operation fails, contact your HP account support representative. Shredding Data Output pane When you specify volumes in the Shredding Data Output pane during a Shredding operation, the results of the operation are saved in files.
• Prepare for Shredding operations (see Preparing for Shredding operations). • Define Shredding operation settings (see Shredding Param pane and Defining Shredding operation settings). • Perform Shredding operations (see Deleting data on volumes (Shredding)). NOTE: To quit shredding operations, see Canceling Shredding operations. Preparing for Shredding operations Before performing shredding operations, change the status of the target volume to Blocked.
Defining Shredding operation settings Use the Shredding Param pane to define the settings used for Shredding operations. NOTE: When you change the status of a volume to Blocked, I/O operations cannot be performed on the volume. By specifying write permissions, you can limit who is allowed to perform shredding operations. 1. In the Customized Volume pane, click Shredding Param. The Shredding Param pane appears. 2. Select Default or User in the Write Data Type field. If you selected User, go to Step 3.
1. In the Volume Manager pane, check the LDEV Information table, and verify that the status of the target volume is Blocked. NOTE: If the status of the volume is not shown in the LDEV Information table, click LDEV Status. If the status of the volume is not Blocked, see Preparing for Shredding operations for instructions on changing the status to Blocked. 2. Select the target volume in the LDEV Information table, and right click. 3. Select Shredding. A message appears. 4.
11. Select the folder where you want to download the file. 12. Click OK. 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 automatically changes from Blocked to Normal. NOTE: You can also click the Download button in the Volume Manager pane to download the file containing the results of the Shredding operation.
HP StorageWorks XP Data Shredder for the XP12000/XP10000 Disk Array
2 Support and other resources Related documentation The following documents provide related information: • HP StorageWorks XP Remote Web Console user guide for XP12000/XP10000 Disk Arrays and SVS 200 • HP StorageWorks XP LUN Configuration and Security Manager User Guide for XP12000/XP10000 Disk Arrays and SVS 200: LUN Manager and Volume Manager You can find these documents on the HP Manuals website: http://www.hp.com/support/manuals In the Storage section, click Storage Software and then select a product.
• http://www.hp.com/storage/spock Documentation feedback HP welcomes your feedback. To make comments and suggestions about product documentation, send a message to storagedocs.feedback@hp.com. All submissions become the property of HP.
