HP XP Command View Advanced Edition Software - Manual (Page 21)

For the tiers with a specified tiering policy level, the priority assigned to new pages is determined by
the combination of the values specified for the tiering policy level and new-page assignment tier.
For example, if 0 is specified as the tiering policy level and MIDDLE is specified as the new-page
assignment tier for a three-tier volume, the priority of three tiers is as follows: Tier 2 > Tier 3 > Tier 1.
The figure below shows how pages are assigned in this case. First, pages are assigned to Tier 2,
which is the highest priority. If Tier 2 becomes full, pages are assigned to Tier 3. If Tier 3 becomes
full, pages are assigned to Tier 1.
Figure 8 Overview of assigning new pages to tiers
The following table describes the values that can be used to specify the new-page assignment tier.
Table 2 Values that can be used to specify the new-page assignment tier
Description Value
The new page is assigned from the higher tier of tiers set in the tiering policy. HIGH
The new page is assigned from the middle tier of tiers set in the tiering policy. MIDDLE
The new page is assigned from the lower tier of tiers set in the tiering policy. LOW
For example, if newer data is accessed more frequently and older data is accessed less frequently,
you can specify
HIGH for the new-page assignment tier because new pages are then assigned in
order starting from the upper tier.
Related topics
• About tiering policy levels , page 19
Prerequisites for Smart Manager for Mainframe
This section describes the prerequisites for Smart Manager for Mainframe.
Prerequisite OS
z/OS from V1R10 through V1R13
CAUTION:
VM environments are not supported by Smart Manager for Mainframe.
Prerequisite hardware
HP XP7 Smart Tiers Z volumes
User Guide 21