Dynamic Tiering performs tier relocations using one of two execution modes: Auto and Manual. You can switch between modes by using Device Manager - Storage Navigator.

Auto execution mode

In Auto execution mode, the system automatically and periodically collects monitoring data and performs tier relocation. You can select an Auto execution cycle of 0.5, 1, 2, 4, or 8 hours, or a specified time.

The following illustrates tier relocation processing in a 2-hour Auto execution mode:

Manual execution mode

In Manual execution mode, you can manually collect monitoring data and relocate a tier. You can issue commands to manually:

1. Start monitoring.
2. Stop monitoring.
3. Perform tier relocation.

The following illustrates tier relocation processing in Manual execution mode:

Notes on performing monitoring

• You can collect the monitoring data even while performing the relocation.
• After stopping the monitoring, the tier range is automatically calculated.
• The latest available monitoring information, which is collected just before the relocation is performed, is used for the relocation processing.
• When the relocation is performed, the status of the monitor information must be valid.