IBM BladeCenter S SAS RAID Controller Module, Инструкция по установке и эксплуатации

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data is organized as stripes across the disks and the striped disk sets are mirrored.
This configuration provides fault tolerance and improved performance.
Drive configurations per RAID level
The following table shows the possible drive configurations for each RAID level.
Table 6. Drive configurations per RAID level
RAID
level RAID
characteristics Minimum
drives Maximum
drives
Maximum
size of each
disk drive Maximum
storage pool
capacity
RAID 0 Striping 2 12 1 TB ~11 TB
RAID 1 Mirroring 2 12 1 TB ~1 TB
RAID 5 Striping with
Distributed
Parity 3 12 1 TB ~9.5 TB
RAID 10 Striping across
mirrors 4. Drives must
be added in
pairs.
(4,6,8,10,12
drives). 12 1 TB ~5.5 TB
Understanding the predefined storage configuration
When you install your IBM BladeCenter S SAS RAID Controller Module, a
predefined configuration is available to get you started. This topic details the
specifics of that predefined configuration.
Canned configuration
The predefined configuration packaged with IBM BladeCenter S SAS RAID
Controller Module is referred to as a
canned config within the interface itself. The
name of the configuration file is
CannedConfig_RSSM.cfg
, and the names of the
configurations created contain the word canned in them. You can use the
predefined configuration if you meet the minimum storage requirements for it.
You can load the predefined or canned configuration from the command line
interface by running the following command at the RAID Controller command line
interface prompt:
controller config -load CannedConfig_RSSM.cfg
The
controller config
command uses the predefined configuration to create one
pool at a RAID 5 level, using port 0, called
CannedDG1
.
The following example shows a command set that is equivalent to the function of
the
controller config
command. The
create pool
command uses five drives in
the first storage module to create a RAID 5 array, and the
global spare
command
uses another drive to create one global spare. The
create volume
commands then
create six volumes of 20 GB in the pool labeled CannedDG1 .
Example: Contents of a pool created using the predefined configuration
<CLI> create pool -drives 1:3 1:5 1:2 1:1 1:4 -raidtype 5 -port 0 -name CannedDG1
create volume -name CannedDG1:vol1 -size 20480MB -seqpostreadcmdsize 0 -seqreadaheadmargin 1 -writecachepolicy on
create volume -name CannedDG1:vol2 -size 20480MB -seqpostreadcmdsize 0 -seqreadaheadmargin 1 -writecachepolicy on
create volume -name CannedDG1:vol3 -size 20480MB -seqpostreadcmdsize 0 -seqreadaheadmargin 1 -writecachepolicy on
Chapter 7. Working with storage pools and volumes
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