Storage Foundation 7.4.1 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
vxdmpadm setattr array
vxdmpadm [-g<DynamicDiskGroupName>] setattr array [loadbalancepolicy=FO|RR|RS [path#=state#] |LQ|WP [path#=weight#]|LB|BP [blockshift=#]] [primarypath=#] [testpathretrycount=# scsicmdtimeout=# kernalsleeptime=# failoverretrycount=# ]<DiskName> | p#c#t#l#>
This command sets the load balance policy and primary path of the array to which the designated disk belongs. It also lets you set tunable parameters (control timer settings) that affect the testing and failover of the paths. The following attributes apply:
loadbalancepolicy= FO|RR|RS |LQ|WP |LB|BP | Specifies the load balance policy for the array where:
Note: Round Robin with Subset and Weighted Paths are available for A/PC and ALUA arrays only at the device level. They are not available at the array level. |
path#=state# | state# specifies either standby (0) or active (1) state of the specified path#. For example, 1-1-1=0 means that path 1-1-1 is assigned a state of standby. (Default state of a path is active (1).) |
path#=weight# | weight# specifies the weight that is assigned to the specified path#. For example, 1-1-1=10 means that path 1-1-1 is assigned a weight of 10. The path with the lowest weight indicates the most-favored path for I/O. (Range of values for weight#: 0 - 255.) |
blockshift=# | # specifies the number of contiguous I/O blocks that are sent along a path to an Active/Active array before switching to the next available path. (Default value is 2048 blocks.) |
primarypath=# | # specifies the primary path of the array. For example, primarypath=1-1-1 sets path 1-1-1 as the primary path of the array. |
testpathretrycount=# | # specifies the number of times the testpath routine retries to test the health of the path. Range: 0 ~ 50 times. Default: 0. |
scsicmdtimeout=# | # specifies the amount of time a SCSI command waits for a device to respond to a SCSI command. Range: 30 ~ 120 seconds. Default is 30 seconds. |
kernalsleeptime=# | # specifies the interval of time the DMP DSMs kernel waits between attempts to recover a path from an error condition. Range: 200 ~ 10000 milliseconds. Default is 200 milliseconds. |
failoverretrycount=# | # specifies the number of times the failover routine retries to failover the path. Range: 0 ~ 50 times. Default: 0. Note: For DMP DSMs, Failover Retry Count does not apply to the EMC Symmetrix array. |
<DiskName> | The designated disk, which can be specified by the device name (such as Harddisk2) or the internal disk name (such as Disk2). The -g option must precede the internal disk name (for example, -gDG2 Disk1). |
p#c#t#l# | The #s correspond to the port, channel, target, and LUN of a disk. |
Examples
vxdmpadm setattr array loadbalancepolicy=FO primarypath=2-1-0 testpathretrycount=4 Harddisk6
Sets the load balance policy of the array to Fail Over Only (Active/Passive), the primary path to path 2-1-0, the testpathretrycount to 4 times.
vxdmpadm setattr array loadbalancepolicy=RR Harddisk6
Sets the load balance policy of the array to Round Robin (Active/Active).