Hitachi Dynamic Link Manager, User Manual, Page: 541 / 746

7. Utility Reference
517
[ENVIRONMENT_SETTINGS] section
This section defines HDLM operation information. If this section is omitted, the
installer will use the following values:
• For a new installation, the installer uses the default values of the keys that are
listed in the following Table 7-12: Keys in the [ENVIRONMENT_SETTINGS]
Section .
• For an upgrade installation or re-installation, the installer uses the old HDLM
setting values.
Table 7-12: Keys in the [ENVIRONMENT_SETTINGS] Section lists the keys defined
in the
[ENVIRONMENT_SETTINGS]
section.
Table 7-12: Keys in the [ENVIRONMENT_SETTINGS] Section
Key name
#1
Description
#2
Necessity of
definition
Maxim
um
numbe
r of
charac
ters
New
installat
ion
Upgrad
e
installat
ion or
re-insta
llation
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_pa
th_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
32
.
Optional Optional 6