Optimizing data placement in a logical group – HP XP Array Manager Software User Manual
Page 111
Checks for hardware tier configurations with high ratio of actual I/O operations to the calculated
maximum number of I/O operations. Used to determine Smart pools that include hardware tier
configurations with saturated performance.
The information displayed when each THP/Smart pool is selected is as follows:
•
Summary
Summarizes information in a list, such as the total capacity and usage of THP/Smart pools, and
the reservation rate. Based on this information, you can review the usage status of the THP/Smart
pool.
If a Smart pool is selected, the following information can also be viewed:
•
Tier Summary
Checks information such as drive type, drive rotational speed, and capacity usage rate of each
hardware tier. Based on this information, you can review the usage status of hardware tiers. Note
that this summary only appears for Smart pools.
•
Capacity Utilization
Checks the total capacity and used capacity of the Smart pools for each hardware tier. Used to
check whether the Smart pool has the necessary capacity and which hardware tier needs more
capacity added to it. This summary only appears for Smart pools.
•
Performance Utilization
Checks the ratio of actual I/O operations to the calculated maximum number of I/O operations
for each hardware tier. Used to check for hardware tiers with performance in a saturated state
requiring optimization (editing the tiering policy, or data migration). This summary only appears
for Smart pools.
•
Top 10: Volumes Sharing Tier Capacity
Checks the usage ranking of volumes that have the largest use capacity in each hardware tier.
Based on this information, you can check whether data placement is appropriate, for example by
checking whether an unexpected volume is occupying a high-speed drive. This summary only
appears for Smart pools.
•
View Tier Properties
Checks the page access distribution per average number of I/O operations, which is based on
the monitoring information of Smart pools.
Based on this information, you can check whether the hardware tier configuration or tiering policy
settings are appropriate.
From the page access distribution for Smart pools, you can narrow the range of displayed items
to only tiering policies or only Smart volumes, as required.
Related topics
Optimizing data placement in a logical group
Data placement can be optimized in either of the supported logical group types (Public Logical Groups
or Private Logical Groups).
Prerequisites
Tasks to complete beforehand:
•
A registered Tiered Storage Manager license.
User Guide
111