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Tiering policy group structure
The values to be set for the storage system for the volumes belonging to a tiering policy group are
stored in the tiering policy group structure.
When the structure is created
The KTLOAD command is executed (the structure is created by loading information from the tiering
policy group definition file).
Prefix of the structure name
The prefix of the tiering policy group structure name is the value specified for the STEM parameter of
each command.
REXX variable names and contents
The following table lists and describes the REXX variables in the tiering policy group structure. A REXX
variable name is preceded by the prefix of the structure name.
Table 48 Tiering policy group structure
DescriptionREXX variable name
--
TPG.
Tiering policy group name
ID
--
VOL.
Number of volumes (n)
0
Information for each volume is stored in lower-level REXX variables.
n.
Storage system serial number
SerialNum
Command unit number
CUNum
Command control address
CCA
Pool ID (decimal number)
POOLID
Storage system ID
SSID
Tiering policy level
TierLevel
New-page assignment tier
HIGH: New pages are assigned to a high-level tier first.
MIDDLE: New pages are assigned to a middle-level tier first.
LOW: New pages are assigned to a low-level tier first.
Entry
REXX variable structures200
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