Virtual disks

This topic includes information about managing your virtual disks.

Viewing the VDisk status
You must view the status of virtual disks (VDisks) as part of the repair verification procedures.
Creating VDisks
You can create virtual disks (VDisks) using the Create Virtual Disks wizard.
Creating VDisks for FlashCopy targets
You can select an existing source virtual disk (VDisk) to use to create target VDisks for FlashCopy® mappings. The Creating VDisk for use as FlashCopy Targets wizard in the SAN Volume Controller Console lets you create one or more source VDisks for mappings.
Viewing the progress of VDisk formatting
You can view the progress of virtual disk (VDisk) formatting from the Viewing VDisk Formatting Progress panel.
Adding a mirrored copy to a VDisk
Use the Add Copy to VDisk panel in the SAN Volume Controller Console to add a mirrored copy to the selected virtual disk (VDisk). Each VDisk can have a maximum of two copies.
Adding a copy to a VDisk using the CLI
You can use the command-line interface (CLI) to add a mirrored copy to a virtual disk (VDisk). Each VDisk can have a maximum of two copies.
Splitting a VDisk copy
You can create a separate virtual disk (VDisk) by splitting a synchronized VDisk copy. You can select a copy to split off from the VDisk and set its attributes.
Deleting a copy from a VDisk
Use the Deleting a Copy from VDisk panel in the SAN Volume Controller Console to delete a mirrored copy from the selected virtual disk (VDisk).
Deleting a copy from a VDisk using the CLI
You can use the command-line interface (CLI) to delete a mirrored copy from a virtual disk (VDisk).
Deleting VDisks
You can delete a virtual disk (VDisk) from the Deleting Virtual Disk panel.
Expanding VDisks
You can use the command-line interface (CLI) or the SAN Volume Controller Console to expand a virtual disk (VDisk).
Listing node-dependent VDisks using the CLI
You can use the command-line interface (CLI) to list the virtual disks (VDisks) that are dependent on the status of a node.
Migrating VDisks
You can migrate a virtual disk (VDisk) from one managed disk (MDisk) group to another from the Migrating VDisks panel.
Migrating extents using the CLI
To improve performance, you can migrate extents using the command-line interface (CLI).
Viewing the progress of VDisk migration
You can view the progress of virtual disk (VDisk) migration from the Viewing VDisk Migration Progress panel.
Shrinking VDisks
You can use the SAN Volume Controller Console to make a target or auxiliary virtual disk (VDisk) the same size as the source or master VDisk when you create FlashCopy® mappings, Metro Mirror relationships, or Global Mirror relationships.
Shrinking a virtual disk using the CLI
You can reduce the size of a virtual disk (VDisk) using the command-line interface (CLI).
Shrinking or expanding space-efficient VDisks
You can use the SAN Volume Controller Console to increase or decrease the real capacity of a space-efficient virtual disk (VDisk).
Virtual disk-to-host mappings
This topic and its subtopics provide information about managing your virtual disk-to-host mappings.
Deleting a managed mode virtual disk
You must use the command-line interface (CLI) to delete a managed mode virtual disk.
Using image mode VDisks
Ensure that you are familiar with using image mode virtual disks (VDisks).
Determining the relationship between VDisks and MDisks
You can use the SAN Volume Controller Console to determine the relationship between virtual disks (VDisks) and managed disks (MDisks).
Verifying and repairing mirrored VDisk copies
The virtual disk (VDisk) copy verification process checks if data on mirrored VDisk copies match. You can choose repair options if differences are found during the verification process.
Validating and repairing mirrored VDisk copies using the CLI
You can use the repairvdiskcopy command from the command-line interface (CLI) to validate and repair mirrored VDisk copies.
Repairing offline space-efficient VDisks
When a space-efficient virtual disk (VDisk) is taken offline because its metadata is corrupted, you can use the Repairing Space-Efficient VDisk panel to repair the metadata. The repair operation automatically detects corrupted metadata and performs any necessary repair actions.
Repairing a space-efficient VDisk using the CLI
You can use the repairsevdiskcopy command from the command-line interface to repair the metadata on a space-efficient virtual disk (VDisk).
Recovering from offline VDisks using the CLI
If a node or an I/O group fails, you can use the command-line interface (CLI) to recover offline virtual disks (VDisks).
Determining the VDisk name from the device identifier on the host
You can use the command-line interface (CLI) to determine the virtual disk (VDisk) name from the device identifier on the host.
Determining the host that a VDisk is mapped to
You can determine the host that a virtual disk (VDisk) is mapped to using the command-line interface (CLI).
Determining the relationship between VDisks and MDisks using the CLI
You can determine the relationship between virtual disks (VDisks) and managed disks (MDisks) using the command-line interface (CLI).
Determining the relationship between MDisks and RAID arrays or LUNs using the CLI
You can determine the relationship between managed disks (MDisks) and RAID arrays or LUNs using the command-line interface (CLI).
Adding a new storage controller to a running configuration using the CLI
You can add a new disk controller system to your SAN at any time using the command-line interface (CLI).
Migrating VDisks between MDisk groups using the CLI
You can migrate virtual disks (VDisks) between managed disk (MDisk) groups using the command-line interface (CLI).
Migrating a VDisk between I/O groups using the CLI
Ensure that you are familiar with migrating a virtual disk (VDisk) between I/O groups.

Parent topic: Disks and disk groups

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