Table of Contents
Advertisement
Chapter 3
Functions of NEC Storage PathManager
It is possible to confirm that static load balancing is in effect once the -path option is applied to the logical
unit 1.
3
.3
.
2
3
.
3
.
2
3.
3.2
In this method, loads are distributed by dynamically changing the paths to be used among multiple paths.
Use the -lbmode option of the spscmd to make settings for dynamic load balancing. The following image
shows an example.
C:\>spscmd -getlun
*** LogicalUnit #0 ***
>
0: Priority=2, PathNumber=4:0:0:0
1: Priority=1, PathNumber=5:0:1:0
C:\>spscmd -lbmode 4:0:0:0 1
C:\>spscmd -getlun
+++ LogicalUnit #0 +++ [round robin]
>
0: Priority=2, PathNumber=4:0:0:0
1: Priority=1, PathNumber=5:0:1:0
C:\>
In this example, the path to logical unit 0 which exists in NEC Storage is used in dynamic load balancing.
Use the first argument in the -lbmode option to specify a path number of the logical unit to execute
dynamic load balancing. Then use the second argument to specify the method of load balancing. Settings
Dy
n
a
m
i
c
l
o
D
y
n
a
m
i
c
l
o
D
ynamic load balancing
0
Path
Figure 3-6 Dynamic load balancing
III-14
a
d
b
a
l
a
n
c
i
n
a
d
b
a
l
a
n
c
i
n
Path
LUN0
LUN1
g
g
1
Advertisement
Table of Contents
Need help?
Do you have a question about the Storage Software PathManager and is the answer not in the manual?
Questions and answers