Avago Technologies MegaRAID Fast Path Software - Manual (Page 225)

LSI Corporation Confidential | July 2011 Page 225
MegaRAID SAS Software User Guide Chapter 5: MegaRAID Command Tool | CacheCade Related Options
5.5.8 Create a RAID Level 10, 50, 60
(spanned) Configuration with SSD
Caching
Use the command in the following table to create a RAID 10, RAID 50, or RAID 60
configuration with SSD caching to the existing configuration on the selected controller.
Table 33: Create a RAID Level 10, 50, 60 (spanned) Configuration with SSD Caching
Convention MegaCLI -CfgSpanAdd -r10 -Array0[E0:S0,E1:S1]
-Array1[E0:S0,E1:S1] [-ArrayX[E0:S0,E1:S1] ...]
[WT|WB] [NORA|RA|ADRA] [Direct|Cached]
[CachedBadBBU|NoCachedBadBBU] [-szXXX[-szYYY
...]][-strpszM][-AfterLdX][-Force]|[FDE|CtrlBase
d] [-Default| -Automatic| -None| -Maximum|
-MaximumWithoutCaching] ] [-Cache] -aN
Description Creates a RAID level 10, 50, or 60 (spanned) configuration from the
specified drive groups. Even if no configuration is present, you must
use this option to write the configuration to the controller.
Note that RAID 10 supports up to eight spans with a maximum of 32
drives in each span. (There are factors, such as the type of controller,
that limit the number of drives you can use.) RAID 10 requires an even
number of drives, as data from one drive is mirrored to the other drive
in each RAID 1 drive group. You can have an even or odd number of
spans.
Multiple drive groups are specified using the
–ArrayX[E0:S0,...]
option. (Note that X starts from 0, not 1.) All
of the drive groups must have the same number of drives. At least two
drive groups must be provided. The order of options {WT |WB}
{NORA | RA | ADRA} {Direct | Cached}
is flexible.
The size option, -szXXXXXXXX, can be accepted to allow slicing in
the spanned drive groups if the controller supports this feature. The
[–afterLdX]
option is accepted if the size option is accepted. CT
exits and does not create a configuration if the size or the afterLd
option is specified but the controller does not support slicing in the
spanned drive groups.
NOTE: Previously, -szXXX expressed capacity in MB but now you can
enter the capacity in your choice of units. For example, to create a
virtual drive of 10 GB, enter the size as sz10GB. If you do not enter a unit,
by default it is considered as MB.
[-Default| -Automatic| -None| -Maximum|
-MaximumWithoutCaching]
: If the controller supports power
savings on virtual disk, these options specify the possible levels of
power savings that can be applied on a virtual disk.
[-Cache] : Specifies that SSD caching is enabled.