In the MegaRAID SAS Software User Guide it is stated that a Drive Group includes one or more virtual drives. An excerpt from the document is:
"A virtual drive is a partition in a drive group that is made up of contiguous data segments on the drives. A virtual drive can consist of these components:
- an entire drive group
- more than one entire drive group
- a part of a drive group
- parts of more than one drive group
- a combination of any two of these conditions."
My first question is the following: How can I create a drive group and inside that group have more than one virtual drive ?
In the User Guide there is just one relevant command, regarding drive groups. The guide says that this command creates a new drive group:
MegaCli –CfgLDAdd -RX[E0:S0,E1:S1,...] [WT | WB] [NORA | RA] [Direct | Cached] [CachedBadBBU|NoCachedBadBBU] [-szXXX [-szYYY ...]] [-strpszM] [-Hsp[E0:S0,...]] [-AfterLdX] | -Force [FDE|CtrlBased] [-Cache] [-enblPI -val] -aN
In my opinion, running this command does not create a drive group.
My second question: Is a RAID Array the same thing as a Drive Group, in MegaRAID ? I am assuming they are the same thing.
What I actually want to achieve is to create a RAID Array , and in that array more than one virtual volumes.