HP XP Command View Advanced Edition Software - Manual (Page 20)

Figure 6 When the tiering policy level of 1 is specified for a three-tier volume
If the tiering policy level of 2 is specified for a volume that has three tiers, pages are moved between
tiers 1 and 2 according to the access frequency, as shown in the figure below. After pages are moved,
these pages are moved between tiers 1 and 2 according to the access frequency each time tier
relocation is performed.
Figure 7 When the tiering policy level of 2 is specified for a three-tier volume
The following shows the relationship between tiering policy levels and the tiers in which data will be
located.
Table 1 Relationship between tiering policy levels and tiers in which data will be located
Tier in which data will be located
Tiering policy level
2-tier configuration 3-tier configuration
All tiers (tiers 1 and 2) All tiers (tiers 1, 2, and 3) 0
Tier 1 Tier 1 1
All tiers (tiers 1 and 2) Tiers 1 and 2 2
All tiers (tiers 1 and 2) Tier 2 3
All tiers (tiers 1 and 2) Tiers 2 and 3 4
Tier 2 Tier 3 5
Note:
The smaller the tier number, the higher the tier. For example, if an SSD device and an SAS device
make up a tiered volume, the SSD device is Tier 1, and the SAS device is Tier 2.
About the new-page assignment tier
The new-page assignment tier is the tier to which new pages are assigned the first time the host writes
data to the volume.
Overview of Smart Manager for Mainframe 20