HP XP Array Manager Software - Manual (Page 44)

• Response time of the volume
• Busy rate for parity groups
From the Mobility tab, the following operations can be performed to optimize data placement:
• Configuration and editing of an Smart Tiers Software tiering policy
• Migration of volumes
• Manually starting or stopping the monitoring and relocation of Smart Tiers Software pools
• Expanding, shrinking, or changing of the settings for THP pools
• Expanding THP volumes and reclaiming zero pages
By creating tiers of volumes or THP pools based on use or performance, you can migrate data to
volumes or THP pools that match the relevant conditions simply by specifying a tier as the migration
target. From the Mobility tab mainframe volumes that are included in a tier can be migrated.
Reading the reports for logical groups displayed in the Mobility tab
Ranking reports for logical groups displayed in the Mobility tab are as follows:
• Bottom 10: Logical Groups with High Response Time
Checks for logical groups including volumes whose response time is slow. Used to determine lo-
gical groups which do not satisfy required performances.This ranking is displayed only when you
have the license for HP StorageWorks P9000 Performance Advisor software.
• Top 10: Logical Groups with Most Unused Capacity
Checks for logical groups that have little unused capacity left for the allocated virtual volumes.
Used to determine logical groups which do not have enough capacity.
• Top 10: Logical Group Used Capacity by Drive Types
Checks for logical groups that use a large amount of capacity by drive type. Used to determine
whether an unexpected volume is occupying a high-speed drive or logical groups which have in-
valid data arrangements.
The information displayed when a logical group is selected is as follows:
• Summary
Provides summarized information in a list, such as the number of volumes and the total capacity
of a logical group, or the last update date. Based on this information, you can review the usage
status of the storage resources in the logical group.
• Drive Type Summary
Checks whether the logical group has the necessary capacity. Checks the total capacity of the
volumes and the used capacity of each drive type within the logical group.
• Drive Type Distribution
Checks how many of each drive type is used for each THP pool that is included in a logical group.
Used to check whether the configuration of the hardware tier is appropriate.
Reading the reports for THP pools that are displayed in the Mobility tab
The Mobility tab displays several types of reports, each with its own focus.
Ranking reports for THP groups displayed in the Mobility tab are as follows:
• Top 10: Pools with the Highest Used %
Checks for THP pools with a high capacity usage rate to determine THP pools that need pool ex-
pansion or data migration.
Setting up and operating a SAN environment 44