Hitachi XP P9500 User Manual page 541

[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]
Table 7-12: Keys in the [ENVIRONMENT_SETTINGS] Section
#1
Key name
load_balance
load_balance_type
load_balance_same_pa
th_use_times
section.
#2
Description
Specify one of the following values to
indicate whether to enable or disable the
load balancing function:
: Enabled (default)
on
: Disabled
off
Specify one of the following values to
indicate the load balancing algorithm:
: The Round Robin algorithm
rr
: The Extended Round Robin algorithm
exrr
: The Least I/Os algorithm
lio
: The Extended Least I/Os algorithm
exlio
(default)
: The Least Blocks algorithm
lbk
: The Extended Least Blocks
exlbk
algorithm
Specify the number of times the same path
can be used for I/O operations when the
Round Robin ( ), Least I/Os (
rr
Least Blocks ( ) algorithm is used for
lbk
load balancing.
You can specify a value from
The default is .
32
Necessity of
definition
New
installat
ion
Optional
Optional
Optional
), or
lio
to .
0 999999
7. Utility Reference
Maxim
um
numbe
Upgrad
r of
e
charac
installat
ters
ion or
re-insta
llation
Optional 3
Optional 5
Optional 6
517