Migrate a volume and all of its snapshots to a different storage pool. Volumes undergoing migration remain available for I/O.
About this task
NOTE:vTree migration is a long process and can take days or weeks, depending on the size of the
vTree.
The following limitations apply:
Migration between storage pools with different data layouts is only allowed if there is a single volume in the
vTree.
vTrees containing a manually created snapshot cannot be migrated.
You cannot migrate a volume that is a source volume of a snapshot policy between storage pools with different data layouts.
Volumes involved in replication cannot be migrated.
Steps
On the menu bar, click
Block > Volumes.
In the list of volumes, select the volume that you want to migrate.
In the right pane, click
View Details.
In the left pane, click the
VTree tab.
In the left pane, from the
VTree menu on the right, select
Migrate vTree.
In the
Migrate vTree dialog box, in the
TARGET area, select the destination storage pool.
Ensure that you select a storage pool with enough capacity for the
vTree size.
Optionally, expand
Advanced to select one or several of the following advanced options:
Option
Description
Add migration to the head of the migration queue
Give this
vTree migration the highest priority in the migration priority queue.
Ignore destination capacity
Allow the migration to start regardless of whether there is enough capacity at the destination, or not.
Enable compression
Compression is done by applying a compression-algorithm to the data.
Convert
vTree from...
Convert a thin-provisioned
vTree to thick-provisioned, or vice-versa, at the destination, depending on the provisioning of the source volume.
NOTE:SDCs with a version earlier than v3.0 do not fully support converting a thick-provisioned
vTree to a thin-provisioned
vTree during migration; after migration, the
vTree will be thin-provisioned, but the SDC will not be able to trim it. These volumes can be trimmed by unmapping and then remapping them, or by restarting the SDC. The SDC version will not affect capacity allocation, and a
vTree converted from thick to thin provisioning will be reduced in size accordingly in the system.
Save current
vTree provisioning state during migration
The provisioning state is returned to its original state before the migration took place.
Click
Migrate vTree.
The
vTree migration is initiated. The
vTree appears in both the source and the destination storage pools.
At the top right of the window, click the
Running Storage Jobs icon and check the progress of the migration of the
vTree.
Verify that the operation has finished and was successful, and click
Dismiss.
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