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| Dynamic disk group split | ||
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| Prev | Dynamic Disk Group Split and Join | Next |
After a dynamic disk group is split through the CLI command, the target disk group is in an Imported state. If you want the dynamic disk group to be in a Deported state, use the CLI version of the command, vxdg split, in which the default state of the target disk group is Deported. However, you can also use the -i switch with vxdg split to have the target disk group be Imported.
With the dynamic disk group split command, if the source disk group is a cluster disk group or a disk group with private dynamic disk group protection, the resulting target disk group becomes the same disk group type.
With the CLI disk group split command, these disk group types need additional parameters to ensure that they retain their respective disk group type.
To split a dynamic disk group
You can use the Disk View to look at the disk group's volumes and subdisks, so you can see which disks are appropriate to split. The disks in the new split-off disk group have to contain complete volumes.
If a volume is in use, an error message comes up, asking if you want to force the split operation.
Enter the new dynamic disk group name.
Choose either the "Split dynamic disk group by disks" option or the "Split dynamic disk group by volumes" option.
When you choose to split by disks, disks appear in the panes in the lower section of the window. If you choose to split by volumes, volumes appear instead of disks.
Select the disks or volumes that you want to split.
The currently available disks or volumes in the specified disk group are displayed in the left pane, which is labeled "Available disks" or "Available volumes." You select disks or volumes in the left pane and then click Add to move them to the right pane, which is labeled "Selected disks" or "Selected volumes.
"You can use Add All to move more than one disk at once. If all disks are moved, you need to move at least one of them back to the left pane, because you cannot split a dynamic disk group if you include all the disks in the target disk group.
The volumes and disks that belong to the source dynamic disk group and that are not split remain accessible during the entire dynamic disk group split operation.
After entering the specifications, click Next to continue.
The screen that follows shows the type of information you may see. The purpose of this screen is to let you confirm the disk group split.
The wizard shows the disks that are selected for the split in the left column and the volumes that are split in the right column. In this screen, you may see more disks than what you selected for the split. If the disks you have selected result in a disk group with partial volumes, the program supplies the disks needed to ensure that the split-off dynamic disk group have complete volumes.
If you want to make the split-off dynamic disk group larger, you can click Back to go back and add more disks.
When you are satisfied that the information is correct, click Next.
If the dynamic disk group split is successful, you'll be able to view the new target dynamic disk group in the tree view and in the right pane of the console. By default, the new target disk group is in the Imported state if you use the GUI to perform the split. If you use the command line to execute the split, the new target disk group is in the Deported state by default, because it assumes that you want to deport the disk group and then import it on another computer. However, with the command line, you can use the -i switch with the vxdg split command to have the disk group remain in the Imported state.
If the Split Dynamic Disk Group command fails, an error dialog box is displayed showing the reason for failure. The dynamic disk group split operation fails if the target disk group already exists or if a problem occurs when the split operation takes place.
If the computer fails during the split operation, Storage Foundation provides a recovery process. The next section has the details on the recovery process.