Interaction With Other Features; Storage Partitioning; Snapshot Virtual Disks - Dell PowerVault MD3260 Cli Manual
Powervault modular disk storage arrays
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Also See for PowerVault MD3260:
- Owner's manual (58 pages) ,
- Deployment manual (26 pages) ,
- Configuration manual (17 pages)
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The following example shows a command to remove a virtual disk copy pair:
client>smcli 123.45.67.89 -c "remove
virtualDiskCopy target [\"Obi_1\"];"
The following example is the script file version of the command:
remove virtualDiskCopy target ["Obi_1"];
Interaction With Other Features
You can run the Virtual Disk Copy feature while running the following features:
•
Storage Partitioning
•
Snapshot Virtual Disks
When running the Virtual Disk Copy feature with other features, you must take the requirements of other features into
consideration to ensure you set up a stable storage array configuration. You can also run the Virtual Disk Copy feature
while running Dynamic Virtual Disk Expansion.
Storage Partitioning
Storage partitioning enables hosts to share access to virtual disks in a storage array. You create a storage partition
when you define the following storage array assignments:
•
A host
•
A host group
•
Virtual disk-to-logical unit number (LUN) mapping
The virtual disk-to-LUN mapping enables you to define which host group or host has access to a particular virtual disk in
the storage array.
After you create a virtual disk copy, the target virtual disk automatically becomes read‑only to hosts to ensure that the
data is preserved. Hosts that have been mapped to a target virtual disk do not have write access to the virtual disk, and
any attempt to write to the read-only target virtual disk results in a host I/O error.
If you want hosts to have write access to the data on the target virtual disk, use the set virtualDiskCopy command to
disable the read-only attribute for the target virtual disk.
Snapshot Virtual Disks
A snapshot virtual disk is a point-in-time image of a virtual disk. It is typically created so that an application, such as a
backup, can access the snapshot virtual disk and read the data while the source virtual disk remains online and
accessible to hosts.
CAUTION: Before using the source virtual disk of a snapshot virtual disk as your target, you must disable all
snapshot virtual disks associated with the source virtual disk. By disabling the snapshot virtual disks, you avoid
altering the snapshot data if the source virtual disk is changed.
Creating a snapshot virtual disk automatically creates a snapshot repository virtual disk. The snapshot repository virtual
disk stores information about the data that has changed since the snapshot virtual disk was created. Snapshot
repository virtual disks cannot be selected as a source virtual disk or target virtual disk in a virtual disk copy.
The virtual disk for which the point-in-time image is created is the source virtual disk and must be a standard virtual disk
in the storage array.
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