HP XP Racks User Manual

Page 304

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[ENVIRONMENT_SETTINGS] section

This section defines information that is used when the set operation of the

HDLM command is executed. This section is optional. If this section name is

omitted, or if any of the keys in the section are not defined, setup by means

of the set operation of the HDLM command will not be executed.

For details on the set operation, see

set (Sets Up the Operating

Environment) on page 6-16

.

The following table lists and describes the keys defined in the
[ENVIRONMENT_SETTINGS] section.

Table 7-8 Keys in the [ENVIRONMENT_SETTINGS] Section

Key name

#1

Description

#2

Necessity of

definition

Maxim

um

numbe

r of

charac

ters

New

installa

tion

Upgrad

e

installa

tion or

re-

installa

tion

load_balance

Specify one of the following values

to indicate whether to enable or

disable the load balancing function:
on: Enabled (default)

off: Disabled

Optional Optional 3

load_balance_type

Specify one of the following values

to indicate the load balancing

algorithm:
rr: The Round Robin algorithm

exrr: The Extended Round Robin

algorithm
lio: The Least I/Os algorithm

exlio: The Extended Least I/Os

algorithm (default)
lbk: The Least Blocks algorithm

exlbk: The Extended Least Blocks

algorithm

Optional Optional 5

load_balance_same_
path_use_times

Specify the number of times the

same path can be used for I/O

operations when the Round Robin

(rr), Least I/Os (lio), or Least

Blocks (lbk) algorithm is used for

load balancing.
You can specify a value from 0 to
999999. The default is 20.

Optional Optional 6

7-32

Utility Reference

Hitachi Dynamic Link Manager User Guide for AIX®

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