HP XP P9500 Storage - Manual (Page 16)

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• About tiering policy groups , page 16
Terms used in Smart Manager for Mainframe
This section describes the terms used in Smart Manager for Mainframe.
About tiering policy groups
A tiering policy group is a group of multiple SMS storage groups and volumes. Specification of the
tier in which data is to be located, acquisition of information, and other operations can be performed
on a tiering policy group basis.
The following figure shows the possible grouping patterns of tiering policy groups.
Figure 4 Grouping patterns of tiering policy groups
About tiering policies
A tiering policy is information about the tiers in which data will be located and about the processing
of tier relocation.
You can specify a tiering policy prior to defining a tiering policy group. After you define a tiering
policy group, you must apply the specified tiering policy to the storage system.
For example, you have applied a tiering policy that locates data in Tier 1 (SSD) and Tier 2 (SAS) for
a volume. In this case, when tier relocation takes place, pages are assigned to tiers 1 and 2, and
then data is located on those pages.
The following figure shows an overview of processing related to tiering policies.
Overview of Smart Manager for Mainframe 16