You can migrate a VDisk copy from
one MDisk group to another from the Migrate Virtual Disks panel in
the SAN Volume Controller Console.
Introduction
Notes: - After a migration is started,
there is no way to stop it. Migration continues
until it is complete unless an error condition stops or suspends it
or the
VDisk copy being migrated is deleted.
- You
cannot migrate a VDisk copy between MDisk
groups that have different extent sizes.
Attributes
The
following attributes are displayed in the table:
- Select
- Allows you to select a VDisk copy to migrate to a MDisk group.
- Copy ID
- Displays the system-assigned
identifier for the VDisk copy.
- Status
- Displays the state of the VDisk copy. The following values are
possible:
- Offline
- Indicates that the VDisk
copy is unavailable. One or more of the managed
disks (MDisks) that make up the VDisk are degraded or offline and
consequently
the VDisk copy is unavailable.
- Online
- Indicates that the VDisk copy is available. All the MDisks that
make up
the VDisk copy are available.
- Synchronize
- Displays whether the VDisk copy is
synchronized.
- Primary
- Displays
whether this copy is the primary VDisk copy.
- MDisk
Group ID
- Displays the system-assigned identifier for the MDisk
group that contains
the VDisk copy.
- MDisk Group Name
- Displays
the name of the MDisk group that contains the VDisk copy.
- Type
- Displays the type of VDisk copy. The following
values are possible:
- Striped
- Indicates
that the VDisk copy was created from multiple
MDisks that are in the MDisk group.
- Sequential
- Indicates that the VDisk copy was created from one
MDisk
that is in the MDisk group.
- Image
- Indicates
that the VDisk copy was created from one MDisk that is in the
MDisk group. Provides a direct block-for-block translation from the
MDisk
to the VDisk. This is intended for MDisks that already contain data
that was
not written through the SAN Volume Controller.
- Used Capacity
- Displays
the amount of capacity that has been used by the VDisk copy.
- Real Capacity
- Displays the total amount
of capacity that is allocated to
the VDisk copy.
- Free Capacity
- Displays
the amount of capacity that is available to the VDisk copy.
Attributes
- Attribute
- Displays the name of the MDisk group
that this VDisk copy belongs
to.
- Value
- Displays
the value that is assigned to this MDisk group.
Fields
- Target MDisk group
- Select an MDisk
group to migrate this VDisk copy to.
- Number of threads to devote to this process
- Select the
number of threads to use for processing the migration
of data.
The higher the number of threads, the higher the priority of the process
and
the resulting load that is placed on the system.
Actions
The
following actions are available:
- OK
- Click
this button to migrate the VDisk copy to
another MDisk group.
- Cancel
- Click
this button to exit the panel without migrating the VDisk copy to
another MDisk group.