The SmartMove™ feature reduces the time and I/O required to attach or reattach a plex to an existing VxVM volume, in the specific case where a VxVM volume has a VxFS file system mounted on it. The SmartMove feature uses the VxFS information to detect free extents and avoid copying them.

The SmartMove feature is enabled by default.

The SmartMove feature takes effect when a plex is attached or reattached using the vxplex, vxsd, or vxassist commands.

When the SmartMove feature is on, less I/O is sent through the host, through the storage network and to the disks or LUNs. The SmartMove feature can be used for faster plex creation and faster array migrations.

The SmartMove feature enables migration from a traditional LUN to a thinly provisioned LUN, removing unused space in the process.

For more information, see the section on migrating to thin provisioning in the Veritas Storage Foundation™ Advanced Features Administrator's Guide.