HP XP P9000 Command View Advanced Edition Software - Manual (Page 51)

time or interval in advance, or you can manually execute at a time of your choice according to
the requirements of your work.
• Applying a tiering policy to Smart volumes - In a Smart pool, data that has a high frequency of
I/O operations is preferentially placed in a high-speed hardware tier automatically. To ensure
that data with high importance but with few I/O operations is placed in a hardware tier that
maintains a certain speed at all times, you can fix the target hardware tier. You can also apply
a tiering policy to Smart volumes that determines the capacity ratio of each hardware tier, by
defining such a policy in advance. You can regulate tiering to allow for operation that balances
performance and cost, such as by preventing more data than is necessary from being placed in
a fast hardware tier and thereby reducing management costs. After a tiering policy has been ap-
plied, regularly review the status of the settings of that tiering policy and the amount of capacity
in use by each hardware tier to verify that resources are being appropriately allocated. Tiering
policy definitions can be changed if costs are greater or performance is lower than expected.
• Editing a tier rank for an external Smart pool volume - When an external volume is included in a
Smart pool volume that is one of the volumes making up a Smart pool, you can define the external
LDEV tier rank (high, medium, or low) according to the performance.
A registered Tiered Storage Manager license enables the following:
• Evaluating and analyzing the operation status of Smart pools - Use the Mobility tab to evaluate
and analyze the operation status that is related to a Smart pool.
• Setting a schedule for relocating data and monitoring Smart pools - Register the time of Smart
pool monitoring and data replacement as a template schedule.
• Editing tier relocation for Smart volumes (preventing relocation by volume) - Users can set whether
data can be relocated for each Smart volume. Tier relocation can be controlled according to
characteristics and the operating status of the applications using Smart volumes, such as by pre-
venting other applications from relocating data of the volumes they are using when there is an
application for which data relocation takes a high priority.
• Restoring a data placement by applying a data placement profile of Smart volumes - Users can
restore a past data placement by saving data placements of optimized Smart volumes per page
as profiles, and applying them according to operation. For example, if a Smart volume is being
used for multiple operations that have different access characteristics (such as online and batch
processing), users can create data placement profiles that fit the different processes, and apply
the appropriate profile before beginning processing. By doing so, users can restore a data
placement that fits the characteristics of the target processing in advance, which prevents I/O
performance from dropping. In addition, by setting up a schedule, users can update and apply
profiles at regular intervals to suit the operation of applications. Profiles are applied only to pages
placed in Tier 1 of Smart pools.
Manually starting or stopping the monitoring of Smart pools
You can start or stop monitoring of Smart pools manually. A Tiered Storage Manager license is
required to perform the operation from the Mobility tab.
After confirming that the Smart pools setting for Tier Management is set to Manual, you can start or
stop monitoring of Smart pools.
1. From the tree view in the Resources tab, select Storage Systems (or use the Mobility tab).
2. Expand the tree and select THP Pools under the target storage system.
3. Select one or more Smart pools and click either the Start Monitoring or Stop Monitoring button,
both found in the More Actions menu.
4. Set the desired items and execute the task.
5. View the list of tasks to check execution results.
User Guide 51