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
Selecting online display options
The first task in the setup process is to set the display options. This task is not necessary. If you do not use this window, the default settings, which are shown in this window the first time you bring it up, apply. The default settings are shown in the sample screen below.
To select the online data display options
- Choose Statistics>Online Data Display Options from the Tools menu to bring up the Online Data Display Options window.
- (Optional) Change the I/O Refresh Rate/Sec setting.
This is the time interval of the refresh of the screen display. The program continuously runs the actual statistics in the background but changes the display of them in the Online Monitoring window according to the refresh rate you set. The default and minimum I/O refresh rate is 5 seconds.
- (Optional) Change the Threshold setting.
The threshold is the minimum amount of I/O per second that a disk or subdisk has to have to display a color other than blue. Blue is the lowest state, low I/O activity. The default threshold is 15.
- Determine which statistical parameter or parameters to use for the hot spot indicator.
The window provides the following two places to enter a hot spot indicator:
The drop-down list that is labeled "Hot spot indicator based on.
"The check box labeled "Use queue depth as hot spot indicator."
Queue depth applies only to disks. The other eight statistical parameters that are in the "Hot spot indicator based on" drop-down list apply to disks, volumes, and subdisks.
If you select the check box to use queue depth as a hot spot indicator, queue depth is used to calculate the hot spot statistic for disks only. The indicator that is used to calculate the hot spot statistic for volumes and subdisks is the statistical parameter that is shown in the "Hot spot indicator based on" drop-down list.
If you don't select queue depth as a hot spot indicator, then the indicator that is used to calculate the hot spot statistic for volumes, subdisks, and disks is the statistical parameter that is shown in the "Hot spot indicator based on" drop-down list.
Why Use Queue Depth?
It is recommended that you select queue depth when you have both disks that are directly connected to your computer and disks that are in a hardware disk array. Because a disk in a disk array can have a much higher level of reads or writes and still function well, reads or writes per second are not really a good way to compare directly connected disks and array disks. Queue depth is the current number of read and write requests in the queue for selected disks. It is a better indicator of how well a disk in an array works, and it also works for the disks that are directly attached to the computer.
- By default, Read Requests per Second, Write Requests per Second, Read and Write Requests per Second, Read and Write Blocks per Second, and Queue Depth are selected parameters. The Reset button restores default settings.
Select the statistics parameters you want to monitor by clicking the check box in front of each parameter. The statistics parameters are described as follows:
Read Requests/Second
The number of read requests per second for selected storage objects.
Write Requests/Second
The number of write requests per second for selected storage objects.
Read Blocks/Second
The amount of read request data (in blocks per second) that is processed for selected storage objects. It is the throughput on the read requests made.
Write Blocks/Second
The amount of write request data (in blocks per second) that is processed for selected storage objects. It is the throughput on the write requests made.
Average Time/Read Block
The average time in microseconds that it takes to process a read block from the time a request is made until the data is returned.
Average Time/Write Block
The average time in microseconds that it takes to process a write block from the time a request is made until the data is returned.
Read and Write Requests/Second
The number of read and write requests per second for selected storage objects.
Read and Write Blocks/SecondThe number of read and write blocks per second for selected storage objects.
Queue Depth
The current number of read and write requests in the queue for selected disks. It does not apply to volumes and subdisks.
- When you are finished with your changes, click OK.