HP XP P9000 Command View Advanced Edition Software Licenses User Manual
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Monitoring Smart pools and relocating data - Smart pool monitoring and data relocation can be
performed. Monitoring and data relocation can be set to execute automatically by specifying a
time or interval in advance, or you can manually execute at a time of your choice according to
the requirements of your work.
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Specifying the buffer space for Smart pools - When Smart pools are created or edited, on each
hardware tier, you can specify a ratio corresponding to the buffer space for new page assignment,
an area reserved for increasing used capacity. Similarly, you can specify a ratio corresponding
to the buffer space for tier relocation, a working area reserved for the storage system to use when
relocating data. Changing the default values, however, might degrade performance, so we recom-
mend using the defaults.
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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 applied, 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.
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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:
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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.
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Setting a schedule for relocating data and monitoring Smart pools - Register the time of Smart
pool monitoring and data replacement as a template schedule.
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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.
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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.
Related topics
• Manually starting or stopping the monitoring of Smart pools
• Manually starting or stopping the tier relocation of Smart pools
• Scheduling monitoring and tier relocation of Smart pools
Managing storage resources in a SAN environment
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