Execution modes when using Hitachi Device Manager - Storage Navigator
Dynamic Tiering performs tier relocations using one of two execution modes: Auto and Manual. You can switch between modes by using Hitachi 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:
Start monitoring.
Stop monitoring.
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.
Viewing monitor and tier relocation information:
Information is displayed on the following items in the GUI windows:
Monitoring Status on Pools window, Pools: Volume tabs, and View Pool Management Status window.
Displays the status of pool monitoring.
In Progress: The monitoring is being performed.
During Computation: The calculating is being processed.
Other than these cases, a hyphen (-) is displayed.
Recent Monitor Data on Pools window and Pools: Volume tabs.
Displays the latest monitoring data.
If the monitoring data exists, the monitoring period of time is displayed.
Example: 2010/11/15 00:00 - 2010/11/15 23:59
If the monitoring data is being obtained, only the starting time is displayed.
Example: 2010/11/15 00:00 -
If the latest monitoring data does not exist, a hyphen (-) is displayed.
Pool Management Task on Pools window and Pools: Volume tabs.
Displays the pool management task being performed to the pool.
Waiting for Relocation: The tier relocation process is being waited.
Relocating: The tier relocation process is being performed.
For details about the relocation progress rate, check the tier relocation log. For more information about the table item for the tier relocation log file, see Tier relocation log file contents.
Pool Management Task (Status/Progress) on View Pool Management Status window.
Displays the status of the pool management task being performed, each V-VOL progress ratio in the pool and its average.
Waiting for Relocation: The tier relocation process is being waited.
Relocating: The tier relocation process is being performed.
For details about the relocation progress rate, check the tier relocation log. For more information about the table item for the tier relocation log file, see Tier relocation log file contents.
Relocation Result on Pools window, Pools: Volume tabs, and View Pool Management Status window.
Displays the status of the tier relocation processing.
In Progress: The status of Pool Management Task is Waiting for Relocation or Relocating.
Completed: The tier relocation operation is not in progress, or the tier relocation is complete.
Uncompleted (n% relocated): The tier relocation is suspended at the indicated percentage progression.
Hyphen (-): The pool is not a Dynamic Tiering pool.
Relocation Speed on Pools window, View Pool Management Status window, Create Pools window, Edit Pools window, Start Tier Relocation window, and Stop Tier Relocation window.
Displays the tier relocation speed settings: 1(Slowest), 2(Slower), 3(Standard), 4(Faster), and 5(Fastest).
Relocation Priority on Pools: Volume tabs and View Pool Management Status window.
Displays the relocation priority.
Prioritized: The priority is set to V-VOL.
Blank: The priority is not set to V-VOL.
Hyphen (-): V-VOL is not the Dynamic Tiering V-VOL or the tier relocation function is disabled.
Performance Graph on View Tier Properties window.
The performance graph for the available monitor information is displayed in the View Tier Properties window.