Storage Foundation 8.0 Administrator's Guide - Windows
- Overview
- Setup and configuration
- Function overview
- About the client console for Storage Foundation
- Recommendations for caching-enabled disks
- Configure basic disks (Optional)
- About creating dynamic disk groups
- About creating dynamic volumes
- Set desired preferences
- Using the GUI to manage your storage
- Working with disks, partitions, and volumes
- Adding storage
- Disk tasks
- Remove a disk from the computer
- Veritas Disk ID (VDID)
- General Partition/Volume tasks
- Mount a volume at an empty folder (Drive path)
- Expand a dynamic volume
- Shrink a dynamic volume
- Basic disk and volume tasks
- Automatic discovery of SSD devices and manual classification as SSD
- Volume Manager space allocation is SSD aware
- Dealing with disk groups
- Disk groups overview
- Delete a dynamic disk group
- Detaching and attaching dynamic disks
- Importing and deporting dynamic disk groups
- Partitioned shared storage with private dynamic disk group protection
- Fast failover in clustered environments
- iSCSI SAN support
- Settings for monitoring objects
- Event monitoring and notification
- Event notification
- Configuring Automatic volume growth
- Standard features for adding fault tolerance
- Performance tuning
- FlashSnap
- FlashSnap components
- FastResync
- Snapshot commands
- Dynamic Disk Group Split and Join
- Dynamic disk group join
- Using Dynamic Disk Group Split and Join with a cluster on shared storage
- Dynamic Disk Group Split and Join troubleshooting tips
- Fast File Resync
- Volume Shadow Copy Service (VSS)
- Using the VSS snapshot wizards with Microsoft Exchange
- Using the VSS snapshot wizards with Enterprise Vault
- Using the VSS snapshot wizards with Microsoft SQL
- Copy on Write (COW)
- Using the VSS COW snapshot wizards with Microsoft Exchange
- Using the VSS COW snapshot wizards with Microsoft SQL
- Configuring data caching with SmartIO
- Typical deployment scenarios
- About cache area
- Configuring SmartIO
- Frequently asked questions about SmartIO
- Dynamic Multi-Pathing
- Configuring Cluster Volume Manager (CVM)
- Configuring a CVM cluster
- Administering CVM
- Access modes for cluster-shared volumes
- Storage disconnectivity and CVM disk detach policy
- Unconfiguring a CVM cluster
- Command shipping
- About I/O Fencing
- Administering site-aware allocation for campus clusters
- SFW for Hyper-V virtual machines
- Introduction to Storage Foundation solutions for Hyper-V environments
- Live migration support for SFW dynamic disk group
- Preparing the host machines
- Configuring the SFW storage
- Administering storage migration for SFW and Hyper-V virtual machine volumes
- Optional Storage Foundation features for Hyper-V environments
- Microsoft Failover Clustering support
- Configuring a quorum in a Microsoft Failover Cluster
- Implementing disaster recovery with Volume Replicator
- Troubleshooting and recovery
- Using disk and volume status information
- Resolving common problem situations
- Commands or procedures used in troubleshooting and recovery
- Rescan command
- Repair volume command for dynamic mirrored volumes
- Additional troubleshooting issues
- Disk issues
- Volume issues
- Disk group issues
- Connection issues
- Issues related to boot or restart
- Cluster issues
- Dynamic Multi-Pathing issues
- vxsnap issues
- Other issues
- CVM issues
- Appendix A. Command line interface
- Overview of the command line interface
- vxclustadm
- vxvol
- vxdg
- vxclus
- vxdisk
- vxassist
- vxassist (Windows-specific)
- vxsd
- vxedit
- vxdmpadm
- vxcbr
- vxsnap
- vxscrub
- sfcache
- Tuning SFW
- Appendix B. VDID details for arrays
vxassist shred
vxassist [-f] [-g<DynamicDiskGroupName>] shred [shredtype=<0|1|2>] <VolumeName | DriveLetter |VmName|DrivePath>
Overwrites the entire volume with zeroes and then deletes the volume.
SFW provides the following methods for overwriting the volume:
1 Pass algorithm
Overwrites the volume with a pattern of zeroes.
Specified by shredtype=0.
3 Pass algorithm
The volume is overwritten a total of 3 times. The volume is first overwritten with a pre-selected digital pattern, then overwritten with the binary complement of the pattern. In the last pass, the volume is overwritten with a randomly selected digital pattern. This 3 pass approach is based on the specifications in the US Department of Defense standard 5220.22-M (3).
Specified by shredtype=1.
7 Pass algorithm
The volume is overwritten a total of 7 times. Each pass consists of overwriting the volume with a randomly selected digital pattern or with the binary complement of the previous pattern. This 7 pass approach is based on the specifications in the US Department of Defense standard 5200.28-STD (7).
Specified by shredtype=2.
SFW defaults to the 1 Pass algorithm when shredtype is not specified.
Warning:
All data in the volume is lost when you shred it. Make sure that the information has been backed up onto another storage medium and verified, or that it is no longer needed.
Note:
Dynamic disks belonging to a Microsoft Disk Management Disk Group do not support the vxassist shred command.
The following attributes apply:
-f | Force the operation. |
-g<DynamicDiskGroupName> | Required only if the <VmName> parameter is used. |
-shredtype=<0|1|2> | Specifies the method to overwrite the volume.
|
<VolumeName> | The path name of the volume, such as \Device\HarddiskDmVolumes\DG1\Volume1. |
<DriveLetter> | The drive letter of the volume to be operated on. |
<VmName> | Internal name of the volume; requires the use of the -g option (for example, -gDG1 Volume1). |
<DrivePath> | A volume that is mounted on an NTFS folder; it is indicated by a path to that folder. |
Examples
vxassist shred J:
The above command shreds volume J.
vxassist shred\Device\HarddiskDmVolumes\DynDskGrp1\volume1
The above command shreds a volume with the path name:
\Device\HarddiskDmVolumes\DynDskGrp1\volume1.