NEC Storage Manager - Recommended RAID Configuration

Appendix D Notes on Use for Data Replication
23
D
D
D
.
.
.
2
2
2
R
R
R
e
e
e
c
c
c
o
o
o
m
m
m
m
m
m
e
e
e
n
n
n
d
d
d
e
e
e
d
d
d
R
R
R
A
A
A
I
I
I
D
D
D
C
C
C
o
o
o
n
n
n
f
f
f
i
i
i
g
g
g
u
u
u
r
r
r
a
a
a
t
t
t
i
i
i
o
o
o
n
n
n
Table D-1 shows RAID configurations recommended if you want to get logical disks to have the same
capacity when using DataReplication.
Table D-1 Recommended Combinations of RAID Configurations
RV
MV
RAID1
(1+1)
*
1
RAID5
(4+P)
*
1
RAID5
(6+P)
*1
RAID5
(8+P)
*1
RAID5
(2+P)
*2
RAID1(1+1)
~ ~
−
~ ~
RAID5(4+P)
*
1
~ ~
−
~ ~
RAID5(6+P)
− −
~
− −
RAID5(8+P)
~ ~
−
~ ~
RAID5(2+P)
*
2
~ ~
−
~ ~
*1: Can be specified through both Batch Setting and Individual Setting.
*2: Can be specified through only Individual Setting.
[How to read the table]
The table shows RAID configurations in which RV having the same capacity as for MV can be
bound. The symbols in the table are as follows:
~: RV can be bound.
−: RV (= a logical disk having the same capacity as for MV) may not be bound if the RAID
configurations of RV and MV are different.
[Supplementary information]
If operating logical disks in a configuration other than the above, bind the logical disks in
combination of RAIDs in which RV can be bound. Refer to D.3 “Capacity Except Recommended
RAID Configuration” for details.